MAX6303中文资料

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IBM 部分电源控制IC中文引脚说明

MAX1631的引脚说明PIN1：CSH3。

3.3V SMPS（开关电源Switch Mode Power Supply )电流检测输入，以CSL3为参考限流电平为100mV。

PIN2：CSL3。

电流检测输入。

常在固定输出模式里作为反馈输入。

PIN3：FB3。

3.3V SMPS的反馈输入；将FB3调整在REF（约2.5V）时为输出可调模式。

当FB3接地时，为固定3.3V输出。

当FB3连接一个分压电阻时为输出可调节模式。

PIN4：对MAX1630、MAX1632来说，此脚为12V输出。

可往外提供12V，120mA的电压。

但要外接一个1uF电容。

对MAX1631来说，此脚为STEER。

次级反馈的逻辑控制输入。

用来选择PWM采用那路变压器和次级反馈信号。

当STEER为GND时，SECFB（secondary feedback次级反馈采用3.3V 变压器次级反馈。

当STEER为VL时，SECFB采用5V 变压器次级反馈。

PIN5：对MAX1630、MAX1632，VDD。

内置线性12V的电源。

对MAX1631，SECFB，次级线圈反馈输入。

通常从辅助输出连接一个电阻分压器。

SECFB调整在。

当接时为不采用。

2.5V VLPIN6：SYNC，振荡同步和频率选择。

连接到VL时工作在300kHZ；接地工作在200kHZ。

当有外接同步时时钟范围可在240kHZ至350Khz。

PIN7：TIME/ON5，具有双用途，用作定时电容引脚和开关控制输入。

PIN8：GND，低噪音模拟地和反馈参考点。

PIN9：REF，2.5V参考电压输出。

接1uF电容至地。

PIN10：SKIP#。

逻辑控制输入。

当为高电平时取消空闲模式。

接地为正常模式。

PIN11：RESET#，低电平有效的定时复位输出。

RESET#在地至VL之间变化。

在上电后的32,000个周32000期变高电平。

PIN12：FB5，5V SMPS反馈输入；调整到FB5=REF（约2.5V）工作输出可调整模式。

MAX3232中文资料.pdf

MAX3222/MAX3232/MAX3237/MAX32413.0V至5.5V、低功耗、1Mbps、真RS-232收发器，使用四只0.1µF外部电容________________________________________________________________Maxim Integrated Products119-0273; Rev 7; 1/07MegaBaud和UCSP是Maxim Integrated Products, Inc.的商标。

本文是英文数据资料的译文，文中可能存在翻译上的不准确或错误。

如需进一步确认，请在您的设计中参考英文资料。

有关价格、供货及订购信息，请联络Maxim亚洲销售中心：10800 852 1249 (北中国区)，10800 152 1249 (南中国区)，或访问Maxim的中文网站：。

M A X 3222/M A X 3232/M A X 3237/M A X 32413.0V至5.5V、低功耗、1Mbps、真RS-232收发器，使用四只0.1µF外部电容2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V CC = +3.0V to +5.5V, C1–C4 = 0.1µF (Note 2), T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.Note 1:V+ and V- can have a maximum magnitude of 7V, but their absolute difference cannot exceed 13V.V CC ...........................................................................-0.3V to +6V V+ (Note 1)...............................................................-0.3V to +7V V- (Note 1)................................................................+0.3V to -7V V+ + V- (Note 1)...................................................................+13V Input VoltagesT_IN, SHDN , EN ...................................................-0.3V to +6V MBAUD...................................................-0.3V to (V CC + 0.3V)R_IN.................................................................................±25V Output VoltagesT_OUT...........................................................................±13.2V R_OUT....................................................-0.3V to (V CC + 0.3V)Short-Circuit DurationT_OUT....................................................................ContinuousContinuous Power Dissipation (T A = +70°C)16-Pin TSSOP (derate 6.7mW/°C above +70°C).............533mW 16-Pin Narrow SO (derate 8.70mW/°C above +70°C)....696mW 16-Pin Wide SO (derate 9.52mW/°C above +70°C)........762mW 16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)...842mW 18-Pin SO (derate 9.52mW/°C above +70°C)..............762mW 18-Pin Plastic DIP (derate 11.11mW/°C above +70°C)..889mW 20-Pin SSOP (derate 7.00mW/°C above +70°C).........559mW 20-Pin TSSOP (derate 8.0mW/°C above +70°C).............640mW 28-Pin TSSOP (derate 8.7mW/°C above +70°C).............696mW 28-Pin SSOP (derate 9.52mW/°C above +70°C).........762mW 28-Pin SO (derate 12.50mW/°C above +70°C).....................1W Operating Temperature RangesMAX32_ _C_ _.....................................................0°C to +70°C MAX32_ _E_ _ .................................................-40°C to +85°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°CMAX3222/MAX3232/MAX3237/MAX32413.0V至5.5V、低功耗、1Mbps、真RS-232收发器，使用四只0.1µF外部电容_______________________________________________________________________________________3TIMING CHARACTERISTICS—MAX3222/MAX3232/MAX3241(V CC = +3.0V to +5.5V, C1–C4 = 0.1µF (Note 2), T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)ELECTRICAL CHARACTERISTICS (continued)(V CC = +3.0V to +5.5V, C1–C4 = 0.1µF (Note 2), T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)A X 3222/M A X 3232/M A X 3237/M A X 32413.0V至5.5V、低功耗、1Mbps、真RS-232收发器，使用四只0.1µF外部电容4_______________________________________________________________________________________典型工作特性Ω, T A = +25°C, unless otherwise noted.)LOAD CAPACITANCE (pF)0246810121416182022150MAX3222/MAX3232SLEW RATEvs. LOAD CAPACITANCELOAD CAPACITANCE (pF)S L E W R A T E (V /µs )20003000100040005000510152025303540MAX3222/MAX3232SUPPLY CURRENT vs. LOAD CAPACITANCEWHEN TRANSMITTING DATALOAD CAPACITANCE (pF)S U P P L Y C U R R E N T (m A )20003000100040005000TIMING CHARACTERISTICS—MAX3237(V CC = +3.0V to +5.5V, C1–C4 = 0.1µF (Note 2), T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)Note 2:MAX3222/MAX3232/MAX3241: C1–C4 = 0.1µF tested at 3.3V ±10%; C1 = 0.047µF, C2–C4 = 0.33µF tested at 5.0V ±10%.MAX3237: C1–C4 = 0.1µF tested at 3.3V ±5%; C1–C4 = 0.22µF tested at 3.3V ±10%; C1 = 0.047µF, C2–C4 = 0.33µF tested at 5.0V ±10%.Note 3:Transmitter input hysteresis is typically 250mV.MAX3222/MAX3232/MAX3237/MAX32413.0V至5.5V、低功耗、1Mbps、真RS-232收发器，使用四只0.1µF外部电容_______________________________________________________________________________________5-7.5-5.0-2.502.55.07.50MAX3241TRANSMITTER OUTPUT VOLTAGEvs. LOAD CAPACITANCELOAD CAPACITANCE (pF)T R A N S M I T T E R O U T P U T V O L T A G E (V )2000300010004000500046810121416182022240MAX3241SLEW RATEvs. LOAD CAPACITANCELOAD CAPACITANCE (pF)S L E W R A T E (V /µs )20003000100040005000510152025303545400MAX3241SUPPLY CURRENT vs. LOADCAPACITANCE WHEN TRANSMITTING DATALOAD CAPACITANCE (pF)S U P P L Y C U R R E N T (m A )20003000100040005000-7.5-5.0-2.502.55.07.50MAX3237TRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE (MBAUD = GND)LOAD CAPACITANCE (pF)T R A N S M I T T E R O U T P U T V O L T A G E (V )200030001000400050000102030504060700MAX3237SLEW RATE vs. LOAD CAPACITANCE(MBAUD = V CC )LOAD CAPACITANCE (pF)S L E W R A T E (V /µs )500100015002000-7.5-5.0-2.502.55.07.50MAX3237TRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE (MBAUD = V CC )LOAD CAPACITANCE (pF)T R A N S M I T T E R O U T P U T V O L T A G E (V )5001000150020001020304050600MAX3237SUPPLY CURRENT vs.LOAD CAPACITANCE (MBAUD = GND)LOAD CAPACITANCE (pF)S U P P L Y C U R R E N T (m A )200030001000400050000246810120MAX3237SLEW RATE vs. LOAD CAPACITANCE(MBAUD = GND)LOAD CAPACITANCE (pF)S L E W R A T E (V /µs )2000300010004000500010302040506070MAX3237SKEW vs. LOAD CAPACITANCE(t PLH - t PHL )LOAD CAPACITANCE (pF)1000150050020002500____________________________________________________________________典型工作特性(续)(V CC = +3.3V, 235kbps data rate, 0.1µF capacitors, all transmitters loaded with 3k Ω, T A = +25°C, unless otherwise noted.)M A X 3222/M A X 3232/M A X 3237/M A X 32413.0V至5.5V、低功耗、1Mbps、真RS-232收发器，使用四只0.1µF外部电容6_________________________________________________________________________________________________________________________________________________________________引脚说明MAX3222/MAX3232/MAX3237/MAX32413.0V至5.5V、低功耗、1Mbps、真RS-232收发器，使用四只0.1µF外部电容_______________________________________________________________________________________7_______________________________详细说明双电荷泵电压转换器MAX3222/MAX3232/MAX3237/MAX3241的内部电源由两路稳压型电荷泵组成，只要输入电压(V CC )在3.0V至5.5V范围以内，即可提供+5.5V (倍压电荷泵)和-5.5V (反相电荷泵)输出电压。

MAX6349VHUT中文资料

The MAX6329/MAX6349 are low-dropout, micropower linear voltage regulators with integrated microprocessor reset circuits. Each is available with preset +3.3V, +2.5V, +1.8V, or adjustable output voltages and can deliver up to 150mA load current. Employing internal Pchannel MOSFET pass transistors, the devices consume only 25µA supply current, independent of the device load. The low supply current, low dropout voltage, and integrated reset functionality make these devices ideal for battery powered portable equipment.
________________________Applications
Hand-Held Instruments
Electronic Planners
Palm Top Computers
PCMCIA Cards
USB Devices
Cellular Telephones
Cordless Telephones
The MAX6329/MAX6349 are optimized for use with a 1µF (min) output capacitor. The regulator output voltage is adjustable with an external resistor-divider network at SET (reset threshold voltages track the desired output voltage). Each device includes thermal shutdown protection, output short-circuit protection, and reverse leakage protection. The MAX6329 includes a shutdown feature to reduce regulator current below 1µA (max) and the MAX6349 offers a manual reset input to assert a microprocessor reset while the regulator output is within specification.

MAX320-MAX322中文资料

ELECTRICAL CHARACTERISTICS
(V+ = +5V ±10%, V- = -5V ±10%, VINH = 3.5V, VINL = 2.5V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER ANALOG SWITCH Analog Signal Range
For equivalent devices specified for single-supply operation, see the MAX323/MAX324/MAX325 data sheet. For quad versions of these switches, see the MAX391/MAX392/MAX393 data sheet.
Plastic DIP (derate 9.09mW/°C above +70°C) .............727mW Narrow SO (derate 5.88mW/°C above +70°C) .............471mW
µMAX (derate 4.10mW/°C above +70°C) .....................330mW CERDIP (derate 8.00mW/°C above +70°C) ..................640mW Operating Temperature Ranges MAX32_C_ _ ........................................................0°C to +70°C MAX32_E_ _......................................................-40°C to +85°C MAX32_MJA ...................................................-55°C to +125°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10sec) .............................+300°C

MAX13103 芯片数据手册说明书

MJD200 (NPN),MJD210 (PNP)Complementary Plastic Power TransistorsNPN/PNP Silicon DPAK For Surface Mount ApplicationsDesigned for low voltage, low−power, high−gain audio amplifier applications.Features•High DC Current Gain•Lead Formed for Surface Mount Applications in Plastic Sleeves (No Suffix)•Low Collector−Emitter Saturation V oltage•High Current−Gain − Bandwidth Product•Annular Construction for Low Leakage •EpoxyMeetsUL94V−*********•NJV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q101 Qualified and PPAP Capable•These Devices are Pb−Free and are RoHS CompliantMAXIMUM RATINGSRating Symbol Max UnitCollector−Base Voltage V CB40VdcCollector−Emitter Voltage V CEO25VdcEmitter−Base Voltage V EB8.0VdcCollector Current − Continuous I C 5.0AdcCollector Current − Peak I CM10AdcBase Current I B 1.0AdcTotal Power Dissipation @ T C = 25°C Derate above 25°C P D12.50.1WW/°CTotal Power Dissipation (Note 1) @ T A = 25°CDerate above 25°C P D1.40.011WW/°COperating and Storage JunctionTemperature RangeT J, T stg−65 to +150°C ESD − Human Body Model HBM3B V ESD − Machine Model MM C V Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.1.These ratings are applicable when surface mounted on the minimum padsizes recommended.SILICONPOWER TRANSISTORS5 AMPERES25 VOLTS, 12.5 WATTSDPAKCASE 369CSTYLE 1MARKING DIAGRAMA= Assembly LocationY=YearWW=Work Weekx= 1 or 0G=Pb−Free PackageAYWWJ2x0GSee detailed ordering and shipping information in the package dimensions section on page 6 of this data sheet.ORDERING INFORMATION1BASE3EMITTERCOLLECTOR2,412341BASE3EMITTERCOLLECTOR2,4PNP NPNTHERMAL CHARACTERISTICSCharacteristic Symbol Max Unit Thermal Resistance, Junction−to−Case R q JC10°C/W Thermal Resistance, Junction−to−Ambient (Note 2)R q JA89.3°C/W 2.These ratings are applicable when surface mounted on the minimum pad sizes recommended.ELECTRICAL CHARACTERISTICS(T C = 25°C unless otherwise noted)Characteristic Symbol Min Max Unit OFF CHARACTERISTICSCollector−Emitter Sustaining Voltage (Note 3) (I C = 10 mAdc, I B = 0)V CEO(sus)25−VdcCollector Cutoff Current(V CB = 40 Vdc, I E = 0)(V CB = 40 Vdc, I E = 0, T J = 125°C)V CBO−−100100nAdcm AdcEmitter Cutoff Current (V BE = 8 Vdc, I C = 0)V EBO−100nAdcON CHARACTERISTICSC Current Gain (Note 3),(I C = 500 mAdc, V CE = 1 Vdc) (I C = 2 Adc, V CE = 1 Vdc)(I C = 5 Adc, V CE = 2 Vdc)h FE704510−180−−Collector−Emitter Saturation Voltage (Note 3) (I C = 500 mAdc, I B = 50 mAdc)(I C = 2 Adc, I B = 200 mAdc)(I C = 5 Adc, I B = 1 Adc)V CE(sat)−−−0.30.751.8VdcBase−Emitter Saturation Voltage (Note 3) (I C = 5 Adc, I B = 1 Adc)V BE(sat)− 2.5VdcBase−Emitter On Voltage (Note 3) (I C = 2 Adc, V CE = 1 Vdc)V BE(on)− 1.6VdcDYNAMIC CHARACTERISTICSCurrent−Gain − Bandwidth Product (Note 4)(I C = 100 mAdc, V CE = 10 Vdc, f test = 10 MHz)f T65−MHzOutput Capacitance(V CB = 10 Vdc, I E = 0, f = 0.1 MHz)MJD200MJD210, NJVMJD210T4G C ob−−80120pF3.Pulse Test: Pulse Width = 300 m s, Duty Cycle [ 2%.4.f T = ⎪h fe⎪• f test.Figure 1. Power DeratingT, TEMPERATURE (°C)T CPD,POWERDISSIPATION(WATTS)Figure 2. Switching Time Test Circuit2.51.51T A0.520SCOPEV CCt r, t f≤ 10 nsDUTY CYCLE = 1%D1 MUST BE FAST RECOVERY TYPE, e.g.: 1N5825 USED ABOVE I B≈ 100 mA MSD6100 USED BELOW I B≈ 100 mAR B and R C VARIED TO OBTAIN DESIRED CURRENT LEVELSFOR PNP TEST CIRCUIT,REVERSE ALL POLARITIESI C, COLLECTOR CURRENT (A)1KI C, COLLECTOR CURRENT (A)t,TIME(ns)50030020010050302010510.02Figure 3. Turn−On Time Figure 4. Turn−Off Timet,TIME(ns)32I C , COLLECTOR CURRENT (A)I C , COLLECTOR CURRENT (A)I C , COLLECTOR CURRENT (A)h F E , D C C U R R E N T G A I NFigure 5. DC Current GainFigure 6. “On” VoltageI C , COLLECTOR CURRENT (A)200400100806040IC , COLLECTOR CURRENT (A)Figure 7. Temperature Coefficients202I C , COLLECTOR CURRENT (A)1.61.20.80.4V , V O L T AG E (V O L T S )NPN MJD200PNP MJD210h F E , D C C U R R E N T G A I NV , V O L T A G E (V O L T S )21.61.20.80.4V , T E M P E R A T U R E C O E F F I C I E N T S (m V /C )°θ+ 2.5+ 2+ 1.5+ 10- 0.5- 1- 1.5- 2+ 0.5- 2.5V , T E M P E R A T U R E C O E F F I C I E N T S (m V /C )°θ+ 2.5+ 2+ 1.5+ 10- 0.5- 1- 1.5- 2+ 0.5- 2.5t, TIME (ms)r (t ), T R A N S I E N T T H E R M A L R E S I S T A N C E (N O R M A L I Z E D )Figure 8. Thermal ResponseV CE , COLLECTOR−EMITTER VOLTAGE (V)25Figure 9. Active Region Safe Operating Area13I C , C O LL E C T O R C U R R E N T (A M P )There are two limitations on the power handling ability of a transistor: average junction temperature and second breakdown. Safe operating area curves indicate I C − V CE limits of the transistor that must be observed for reliable operation; i.e., the transistor must not be subjected to greater dissipation than the curves indicate.The data of Figure 9 is based on T J(pk) = 150°C; T C is variable depending on conditions. Second breakdown pulse limits are valid for duty cycles to 10% provided T J(pk)≤ 150°C. T J(pk) may be calculated from the data in Figure 8.At high case temperatures, thermal limitations will reduce the power that can be handled to values less than the limitations imposed by second breakdown.200V R , REVERSE VOLTAGE (V)207010030Figure 10. Capacitance50C , C A P A C I T A N C E (p F )ORDERING INFORMATIONDevice Package Type Shipping†75 Units / RailMJD200G DPAK(Pb−Free)1,800 / Tape & ReelMJD200RLG DPAK(Pb−Free)2,500 / Tape & ReelMJD200T4G DPAK(Pb−Free)75 Units / RailMJD210G DPAK(Pb−Free)1,800 / Tape & ReelMJD210RLG DPAK(Pb−Free)2,500 / Tape & ReelMJD210T4G DPAK(Pb−Free)2,500 / Tape & ReelNJVMJD210T4G*DPAK(Pb−Free)†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D.*NJV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q101 Qualified and PPAP CapablePACKAGE DIMENSIONSDPAK CASE 369C ISSUE DSTYLE 1:PIN 1.BASE2.COLLECTOR3.EMITTER4.COLLECTORǒmm inchesǓSCALE 3:1*For additional information on our Pb−Free strategy and solderingdetails, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.SOLDERING FOOTPRINT*DIM MIN MAX MIN MAX MILLIMETERSINCHES D 0.2350.245 5.97 6.22E 0.2500.265 6.35 6.73A 0.0860.094 2.18 2.38b 0.0250.0350.630.89c20.0180.0240.460.61b20.0300.0450.76 1.14c 0.0180.0240.460.61e 0.090 BSC 2.29 BSC b30.1800.215 4.57 5.46L4−−−0.040−−− 1.01L 0.0550.070 1.40 1.78L30.0350.0500.89 1.27Z0.155−−−3.93−−−NOTES:1.DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994.2.CONTROLLING DIMENSION: INCHES.3.THERMAL PAD CONTOUR OPTIONAL WITHIN DI-MENSIONS b3, L3 and Z.4.DIMENSIONS D AND E DO NOT INCLUDE MOLD FLASH, PROTRUSIONS, OR BURRS. MOLDFLASH, PROTRUSIONS, OR GATE BURRS SHALL NOT EXCEED 0.006 INCHES PER SIDE.5.DIMENSIONS D AND E ARE DETERMINED AT THE OUTERMOST EXTREMES OF THE PLASTIC BODY .6.DATUMS A AND B ARE DETERMINED AT DATUM PLANE H.H 0.3700.4109.4010.41A10.0000.0050.000.13L10.108 REF 2.74 REF L20.020 BSC 0.51 BSC DETAIL AROTATED 90 CW 5ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks,copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at /site/pdf/Patent−Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly,any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.PUBLICATION ORDERING INFORMATION。

XMS6301 用户手册说明书

XMS6301用户手册一个紧凑的FPGA工业级集成模块（85.5mm×54mm，标准信用卡尺寸），USB3.0接口，256MiB板上DDR3存储器，2片8MiB Flash存储器。

XMS6301集成了Xilinx Spartan-6 FPGA (XC6SLX45或XC6SLX150)、2Gbit(128M×16-bit) DDR3 SDRAM、2片64Mib SPI Flash、高效率的开关电源和3个引脚间距为0.8mm的高速板对板连接器。

USB3.0超高速接口提供高速配置下载及PC（计算机）与FPGA的高速通信，我们的Pionway软件为此提供了非常便捷的传输通道。

FPGA使用一个100MHz低抖动的差分晶振作为时钟源。

未经本公司明确书面许可的情况下，任何单位或个人不得对本文档的部分或全部进行摘抄、复制，并不得以任何形式进行传播。

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修订记录目录XMS6301概述 (3)PCB封装 (3)功能框图 (3)FPGA (4)电源 (4)电源输入保护 (4)USB3.0接口 (4)ESD保护 (4)板上外设 (5)差分低抖动晶体振荡器 (5)DDR3 SDRAM (5)系统Flash (5)FPGA Flash (5)开关、按键、LED (5)板对板连接器 (6)P IONWAY软件 (6)使用说明 (7)供电 (7)功率预算 (7)例：XMS6301-LX150 FPGA功耗 (8)提供散热设计（重要！！） (8)H OST I NTERFACE (8)复位机制 (9)系统F LASH (9)存储分配 (9)FPGA F LASH (9)LED (9)DDR3SDRAM (10)时钟配置（源同步） (11)内存控制块（MCB） (11)MIG设置 (11)JTAG (12)密钥存储器（仅LX150） (12)易失性加密密钥存储（V BATT） (12)板对板连接器 (13)A (13)B (13)C (13)设置I/O口电压 (13)差分信号的考虑 (14)PCB版本历史 (14)XMS6301机械图 (15)XMS6301引脚快速参考A (16)XMS6301引脚快速参考B (17)XMS6301引脚快速参考C (18)XMS6301引脚快速参考外设 (19)XMS6301用户手册 3XMS6301概述XMS6301是一个紧凑的工业级FPGA 模块，它的主要特点是，通过超高速USB3.0接口，建立了Spartan-6 FPGA 与PC 的数据传输通道，其中，接口使用标准的Micro-B 连接器。

MAX6305中文资料

For free samples & the latest literature: , or phone 1-800-998-8800.For small orders, phone 408-737-7600 ext. 3468.General DescriptionThe MAX6305–MAX6313 CMOS microprocessor (µP)supervisory circuits are designed to monitor more than one power supply. Ideal for monitoring both 5V and 3.3V in personal computer systems, these devicesFeatureso Small 5-Pin SOT23 Packageo Precision Factory-Set V CC Reset Thresholds;Available in 0.1V Increments from 2.5V to 5V o Immune to Short V TransientsMAX6305–MAX63135-Pin, Multiple-Input,Programmable Reset ICs________________________________________________________________Maxim Integrated Products 119-1145; Rev 1; 8/98M A X 6305–M A X 63135-Pin, Multiple-Input, Programmable Reset ICs 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICSV CC = +2.5V to +5.5V for the MAX6305/MAX6308/MAX6311, V CC = (V TH + 2.5%) to +5.5V for the MAX6306/MAX6307/MAX6309/MAX6310/MAX6312/MAX6313; T A = 0°C to +70°C; unless otherwise noted. Typical values are at T A = +25°C.)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.V CC ...........................................................................-0.3V to +6V All Other Pins..............................................-0.3V to (V CC + 0.3V)Input/Output Current, All Pins.............................................20mA Rate of Rise, V CC ............................................................100V/µsContinuous Power Dissipation (T A = +70°C)SOT23-5 (derate 7.1mW/°C above +70°C).................571mW Operating Temperature Range...............................0°C to +70°C Storage Temperature Range.............................-65°C to +160°C Lead Temperature (soldering, 10sec).............................+300°CMAX6305–MAX63135-Pin, Multiple-Input, Programmable Reset ICs_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS (continued)(V CC = +2.5V to +5.5V for the MAX6305/MAX6308/MAX6311, V CC = (V TH + 2.5%) to +5.5V for the MAX6306/MAX6307/MAX6309/MAX6310/MAX6312/MAX6313; T A = 0°C to +70°C; unless otherwise noted. Typical values are at T A = +25°C.)Note 1: The MAX6305/MAX6308/MAX6311 switch from undervoltage reset to normal operation between 1.5V < V CC < 2.5V.Note 2: The MAX6306/MAX6307/MAX6309/MAX6310/MAX6312/MAX6313 monitor V CC through an internal factory-trimmed voltagedivider, which programs the nominal reset threshold. Factory-trimmed reset thresholds are available in approximately 100mV increments from 2.5V to 5V (Table 1).M A X 6305–M A X 63135-Pin, Multiple-Input, Programmable Reset ICs 4_________________________________________________________________________________________________________________________________Typical Operating Characteristics(V CC = +5V, T A = +25°C, unless otherwise noted.)5.05.56.06.57.07.58.08.59.09.5-60-40-2020406080100SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (µA )01020304050607080-60-40-2020406080100V CC FALLING PROPAGATION DELAYvs. TEMPERATURETEMPERATURE (°C)P R O P A G A T I O N D E L A Y (n s )010203040506070-60-40-20020406080100OVRST IN RISING PROPAGATION DELAY vs. TEMPERATURE (OVERVOLTAGE RESET INPUT)TEMPERATURE (°C)P R O P A G A T I O N D E L A Y (n s )020406080100120-60-40-2020406080100RST IN_ FALLING PROPAGATION DELAY vs. TEMPERATURETEMPERATURE (°C)R S T I N _ P R O P A G A T I O N D E L A Y (n s )104001200800MAXIMUM TRANSIENT DURATION vs.V CC RESET THRESHOLD OVERDRIVE10OVERDRIVE, V TH - V CC (mV)T R A N S I E N T D U R A T I O N (µs )100100010,0000.900.920.940.960.981.001.021.041.061.081.10-60-40-20020406080100RESET TIMEOUT vs. TEMPERATURE6305 T O C 05TEMPERATURE (°C)N O R M A L I Z E D R E S E T T I M E O U T0.9900.9920.9940.9960.9981.0001.0021.0041.0061.0081.010-60-40-2020406080100RESET THRESHOLD vs. TEMPERATURE6305 T O C 06TEMPERATURE (°C)N O R M A L I Z E D R E S E T T H R E S H O L D (V /V )104001200800MAXIMUM TRANSIENT DURATION vs.OVRST IN THRESHOLD OVERDRIVE10OVERDRIVE, V OVRST IN - V REF (mV)T R A N S I E N T D U R A T I O N (µs )100100010,000104001200800MAXIMUM TRANSIENT DURATION vs.RST IN_ THRESHOLD OVERDRIVE10OVERDRIVE, V REF - V RST IN (mV)T R A N S I E N T D U R A T I O N (µs )100100010,000_______________Detailed DescriptionThe MAX6305–MAX6313 CMOS microprocessor (µP)supervisory circuits are designed to monitor more than one power supply and issue a system reset when any monitored supply falls out of regulation. The MAX6305/MAX6308/MAX6311 have two adjustable undervoltage reset inputs (RST IN1 and RST IN2). The MAX6306/MAX6307/MAX6309/MAX6310/MAX6312/MAX6313 mon-itor V CC through an internal, factory-trimmed voltage divider. The MAX6306/MAX6309/MAX6312 have, in addition, an adjustable undervoltage reset input and a manual-reset input. The internal voltage divider sets the reset threshold as specified in the device part number (Table 1). The MAX6307/MAX6310/ MAX6313 feature an adjustable undervoltage reset input (RST IN) and an adjustable overvoltage reset input (OVRST IN) in addition to the factory-trimmed reset threshold on the V CC moni-tor. Program the adjustable reset inputs with an external resistor divider (see Adjustable Reset Inputs section).Reset OutputsA µP’s reset input starts the µP in a known state. These µP supervisory circuits assert reset to prevent code-execution errors during power-up, power-down, or brownout conditions.RESET (MAX6305–MAX6310) and RESET (MAX6311/MAX6312/MAX6313) are guaranteed to be asserted at a valid logic level for V CC > 1V (see Electrical Characteristics ). Once all monitored voltages exceed their programmed reset thresholds, an internal timer keeps reset asserted for the reset timeout period (t RP );after this interval, reset deasserts.If a brownout condition occurs (any or all monitored volt-ages dip outside their programmed reset threshold),reset asserts (RESET goes high; RESET goes low). Any time any of the monitored voltages dip below their reset threshold, the internal timer resets to zero and reset asserts. The internal timer starts when all of the moni-tored voltages return above their reset thresholds, and reset remains asserted for a reset timeout period. The MAX6305/MAX6306/MAX6307 feature an active-low,MAX6305–MAX63135-Pin, Multiple-Input, Programmable Reset ICs_______________________________________________________________________________________5______________________________________________________________Pin DescriptionM A X 6305–M A X 6313open-drain, N-channel output. The MAX6308/MAX6309/MAX6310 feature an active-low, complementary output structure that both sinks and sources current, and the MAX6311/MAX6312/MAX6313 have an active-high com-plementary reset output.The MAX6305/MAX6308/MAX6311 switch from under-voltage lockout operation to normal operation between 1.5V < V CC < 2.5V. Below 1.5V, V CC undervoltage-lockout mode asserts RESET . Above 2.5V, V CC normal-operation mode asserts reset if RST IN_ falls below the RST IN_ threshold.Manual-Reset Input(MAX6306/MAX6309/MAX6312)Many µP-based products require manual-reset capability,allowing an operator or external logic circuitry to initiate a reset. A logic low on MR asserts reset. Reset remains asserted while MR is low, and for a reset active timeout period (t RP ) after MR returns high. This input has an inter-nal 63.5k Ωpull-up resistor, so it can be left open if it is not used. MR can be driven with TTL-logic levels in 5V sys-tems, with CMOS-logic levels in 3V systems, or with open-drain/collector output devices. Connect a normally open momentary switch from MR to GND to create a manual-reset function; external debounce circuitry is not required.If MR is driven from long cables or if the device is used in a noisy environment, connecting a 0.1µF capacitor from MR to ground provides additional noise immunity.The MR pin has internal ESD-protection circuitry that may be forward biased under certain conditions, drawing excessive current. For example, assume the circuitry driv-ing MR uses a +5V supply other than V CC . If V CC drops or browns out lower than +4.7V, MR ’s absolute maximum rat-ing is violated (-0.3V to (V CC + 0.3V)), and undesirable current flows through the ESD structure from MR to V CC .To avoid this, it is recommended that the supply for the MR pin be the same as the supply monitored by V CC . In this way, the voltage at MR will not exceed V CC .Adjustable Reset InputsThe MAX6305–MAX6313 each have one or more reset inputs (RST IN_ /OVRST IN). These inputs are com-pared to the internal reference voltage (Figure 1).Connect a resistor voltage divider to RST IN_ such that V RST IN_falls below V RSTH (1.23V) when the monitored voltage (V IN ) falls below the desired reset threshold (V TH ) (Figure 2). Calculate the desired reset voltage with the following formula:R1 + R2V TH = ________x V RSTHR25-Pin, Multiple-Input, Programmable Reset ICs 6_______________________________________________________________________________________Figure 1. Functional DiagramMAX6305–MAX63135-Pin, Multiple-Input, Programmable Reset ICs_______________________________________________________________________________________7The ±25nA max input leakage current allows resistors on the order of megohms. Choose the pull-up resistor in the divider to minimize the error due to the input leakage cur-rent. The error term in the calculated threshold is simply:±25nA x R1If you choose R1 to be 1M Ω, the resulting error is ±25 x 10-9x 1 x 106= ±25mV.Like the V CC voltage monitors on the MAX6306/MAX6307/MAX6309/MAX6310/MAX6312/MAX6313, the RST IN_inputs (when used with a voltage divider) are designed to ignore fast voltage transients. Increase the noise immunity by connecting a capacitor on the order of 0.1µF between RST IN and GND (Figure 2). This creates a single-pole lowpass filter with a corner frequency given by:f = (1/2π) / (R1 + R2)(R1 x R2 x C)For example, if R1 = 1M Ωand R2 = 1.6M Ω, adding a 0.1µF capacitor from RST IN_ to ground results in a lowpass corner frequency of f = 2.59Hz. Note that adding capacitance to RST IN slows the circuit’s overall response time.__________Applications InformationInterfacing to µPs with Bidirectional Reset PinsSince the RESET output on the MAX6305/MAX6306/MAX6307 is open drain, these devices interface easily with µPs that have bidirectional reset pins, such as the Motorola 68HC11. Connecting the µP supervisor’s RESET output directly to the microcontroller’s RESET pin with a single pull-up resistor allows either device to assert reset (Figure 3).Negative-Going V CC TransientsIn addition to issuing a reset to the µP during power-up,power-down, and brownout conditions, these devices are relatively immune to short-duration, negative-going V CC transients (glitches).The Typical Operating Characteristics show the Maximum Transient Duration vs. V CC Reset Threshold Overdrive, for which reset pulses are not generated.The graph was produced using negative-going pulses,starting at V TH max, and ending below the pro-grammed reset threshold by the magnitude indicated (reset threshold overdrive). The graph shows the maxi-mum pulse width that a negative-going V CC transient may typically have without causing a reset pulse to be issued. As the amplitude of the transient increases (i.e.,goes farther below the reset threshold), the maximum allowable pulse width decreases.RST IN_/OVRST IN are also immune to negative/positive-going transients (see Typical Operating Characteristics ).A 0.1µF bypass capacitor mounted close to the RST IN_,OVRST IN, and/or the V CC pin provides additional tran-sient immunity.Ensuring a Valid RESET /RESETOutput Down to V CC = 0VWhen V CC falls below 1V, push/pull structured RESET /RESET current sinking (or sourcing) capabilities decrease drastically. High-impedance CMOS-logic inputs connected to RESET can drift to undetermined voltages. This presents no problem in most applica-tions, since most µPs and other circuitry do not operate with V CC below 1V. In those applications where RESET must be valid down to 0V, adding a pull-down resistor between RESET and ground sinks any stray leakageFigure 2. Increasing Noise ImmunityFigure 3. Interfacing to µPs with Bidirectional Reset I/Ocurrents, holding RESET low (Figure 4). The pull-down resistor’s value is not critical; 100k Ωis large enough not to load RESET and small enough to pull RESET to ground. For applications where RESET must be valid to V CC , a 100k Ωpull-up resistor between RESET and V CC will hold RESET high when V CC falls below 1V (Figure 5).Since the MAX6305/MAX6306/MAX6307 have open-drain, active-low outputs, they typically use a pull-up resistor. With these devices and under these conditions (V CC < 1V), RESET will most likely not maintain an active condition, but will drift toward a nonactive level due to the pull-up resistor and the RESET output’s reduction in sinking capability. These devices are not recommended for applications that require a valid RESET output below 1V.* Factory-trimmed reset thresholds are available in approximately 100mV increments with a ±1.5% room-temperature variance.M A X 6305–M A X 63135-Pin, Multiple-Input, Programmable Reset ICs 8_______________________________________________________________________________________Figure 4. Ensuring RESET Valid to V CC = 0VFigure 5. Ensuring RESET Valid to V CC = 0VTable 1. Factory-Trimmed Reset Thresholds *MAX6305UK00D1-T ABAK MAX6306UK41D3-T ABCA MAX6306UK30D1-T ABDQ MAX6307UK46D3-T ABFG MAX6305UK00D2-T ABAL MAX6306UK41D4-T ABCB MAX6306UK30D2-T ABDR MAX6307UK46D4-T ABFH MAX6305UK00D3-T ABAM MAX6306UK40D1-T ABCC MAX6306UK30D3-T ABDS MAX6307UK45D1-T ABFI MAX6305UK00D4-T ABAN MAX6306UK40D2-T ABCD MAX6306UK30D4-T ABDT MAX6307UK45D2-T ABFJ MAX6306UK50D1-T ABAO MAX6306UK40D3-T ABCE MAX6306UK29D1-T ABDU MAX6307UK45D3-T ABFK MAX6306UK50D2-T ABAP MAX6306UK40D4-T ABCF MAX6306UK29D2-T ABDV MAX6307UK45D4-T ABFL MAX6306UK50D3-T ABAQ MAX6306UK39D1-T ABCG MAX6306UK29D3-T ABDW MAX6307UK44D1-T ABFM MAX6306UK50D4-T ABAR MAX6306UK39D2-T ABCH MAX6306UK29D4-T ABDX MAX6307UK44D2-T ABFN MAX6306UK49D1-T ABAS MAX6306UK39D3-T ABCI MAX6306UK28D1-T ABDY MAX6307UK44D3-T ABFO MAX6306UK49D2-T ABAT MAX6306UK39D4-T ABCJ MAX6306UK28D2-T ABDZ MAX6307UK44D4-T ABFP MAX6306UK49D3-T ABAU MAX6306UK38D1-T ABCK MAX6306UK28D3-T ABEA MAX6307UK43D1-T ABFQ MAX6306UK49D4-T ABAV MAX6306UK38D2-T ABCL MAX6306UK28D4-T ABEB MAX6307UK43D2-T ABFR MAX6306UK48D1-T ABAW MAX6306UK38D3-T ABCM MAX6306UK27D1-T ABEC MAX6307UK43D3-T ABFS MAX6306UK48D2-T ABAX MAX6306UK38D4-T ABCN MAX6306UK27D2-T ABED MAX6307UK43D4-T ABFT MAX6306UK48D3-T ABAY MAX6306UK37D1-T ABCO MAX6306UK27D3-T ABEE MAX6307UK42D1-T ABFU MAX6306UK48D4-T ABAZ MAX6306UK37D2-T ABCP MAX6306UK27D4-T ABEF MAX6307UK42D2-T ABFV MAX6306UK47D1-T ABBA MAX6306UK37D3-T ABCQ MAX6306UK26D1-T ABEG MAX6307UK42D3-T ABFW MAX6306UK47D2-T ABBB MAX6306UK37D4-T ABCR MAX6306UK26D2-T ABEH MAX6307UK42D4-T ABFX MAX6306UK47D3-T ABBC MAX6306UK36D1-T ABCS MAX6306UK26D3-T ABEI MAX6307UK41D1-T ABFY MAX6306UK47D4-T ABBD MAX6306UK36D2-T ABCT MAX6306UK26D4-T ABEJ MAX6307UK41D2-T ABFZ MAX6306UK46D1-T ABBE MAX6306UK36D3-T ABCU MAX6306UK25D1-T ABEK MAX6307UK41D3-T ABGA MAX6306UK46D2-T ABBF MAX6306UK36D4-T ABCV MAX6306UK25D2-T ABEL MAX6307UK41D4-T ABGB MAX6306UK46D3-T ABBG MAX6306UK35D1-T ABCW MAX6306UK25D3-T ABEM MAX6307UK40D1-T ABGC MAX6306UK46D4-T ABBH MAX6306UK35D2-T ABCX MAX6306UK25D4-T ABEN MAX6307UK40D2-T ABGD MAX6306UK45D1-T ABBI MAX6306UK35D3-T ABCY MAX6307UK50D1-T ABEO MAX6307UK40D3-T ABGE MAX6306UK45D2-T ABBJ MAX6306UK35D4-T ABCZ MAX6307UK50D2-T ABEP MAX6307UK40D4-T ABGF MAX6306UK45D3-T ABBK MAX6306UK34D1-T ABDA MAX6307UK50D3-T ABEQ MAX6307UK39D1-T ABGG MAX6306UK45D4-T ABBL MAX6306UK34D2-T ABDB MAX6307UK50D4-T ABER MAX6307UK39D2-T ABGH MAX6306UK44D1-T ABBM MAX6306UK34D3-T ABDC MAX6307UK49D1-T ABES MAX6307UK39D3-T ABGI MAX6306UK44D2-T ABBN MAX6306UK34D4-T ABDD MAX6307UK49D2-T ABET MAX6307UK39D4-T ABGJ MAX6306UK44D3-T ABBO MAX6306UK33D1-T ABDE MAX6307UK49D3-T ABEU MAX6307UK38D1-T ABGK MAX6306UK44D4-T ABBP MAX6306UK33D2-T ABDF MAX6307UK49D4-T ABEV MAX6307UK38D2-T ABGL MAX6306UK43D1-T ABBQ MAX6306UK33D3-T ABDG MAX6307UK48D1-T ABEW MAX6307UK38D3-T ABGM MAX6306UK43D2-T ABBR MAX6306UK33D4-T ABDH MAX6307UK48D2-T ABEX MAX6307UK38D4-T ABGN MAX6306UK43D3-T ABBS MAX6306UK32D1-T ABDI MAX6307UK48D3-T ABEY MAX6307UK37D1-T ABGO MAX6306UK43D4-T ABBT MAX6306UK32D2-T ABDJ MAX6307UK48D4-T ABEZ MAX6307UK37D2-T ABGP MAX6306UK42D1-T ABBU MAX6306UK32D3-T ABDK MAX6307UK47D1-T ABFA MAX6307UK37D3-T ABGQ MAX6306UK42D2-T ABBV MAX6306UK32D4-T ABDL MAX6307UK47D2-T ABFB MAX6307UK37D4-T ABGR MAX6306UK42D3-T ABBW MAX6306UK31D1-T ABDM MAX6307UK47D3-T ABFC MAX6307UK36D1-T ABGS MAX6306UK42D4-T ABBX MAX6306UK31D2-T ABDN MAX6307UK47D4-T ABFD MAX6307UK36D2-T ABGT MAX6306UK41D1-T ABBY MAX6306UK31D3-T ABDO MAX6307UK46D1-T ABFE MAX6307UK36D3-T ABGU MAX6306UK41D2-TABBZMAX6306UK31D4-TABDPMAX6307UK46D2-TABFFMAX6307UK36D4-TABGVMAX6305–MAX63135-Pin, Multiple-Input, Programmable Reset ICs_______________________________________________________________________________________9Table 2. Device Marking CodesDEVICECODE DEVICECODE DEVICECODE DEVICECODEM A X 6305–M A X 63135-Pin, Multiple-Input, Programmable Reset ICs 10______________________________________________________________________________________Table 2. Device Marking Codes (continued)MAX6307UK35D1-T ABGW MAX6307UK25D3-T ABIM MAX6309UK41D1-T ABKC MAX6309UK31D3-T ABLS MAX6307UK35D2-T ABGX MAX6307UK25D4-T ABIN MAX6309UK41D2-T ABKD MAX6309UK31D4-T ABLT MAX6307UK35D3-T ABGY MAX6308UK00D1-T ABIO MAX6309UK41D3-T ABKE MAX6309UK30D1-T ABLU MAX6307UK35D4-T ABGZ MAX6308UK00D2-T ABIP MAX6309UK41D4-T ABKF MAX6309UK30D2-T ABLV MAX6307UK34D1-T ABHA MAX6308UK00D3-T ABIQ MAX6309UK40D1-T ABKG MAX6309UK30D3-T ABLW MAX6307UK34D2-T ABHB MAX6308UK00D4-T ABIR MAX6309UK40D2-T ABKH MAX6309UK30D4-T ABLX MAX6307UK34D3-T ABHC MAX6309UK50D1-T ABIS MAX6309UK40D3-T ABKI MAX6309UK29D1-T ABLY MAX6307UK34D4-T ABHD MAX6309UK50D2-T ABIT MAX6309UK40D4-T ABKJ MAX6309UK29D2-T ABLZ MAX6307UK33D1-T ABHE MAX6309UK50D3-T ABIU MAX6309UK39D1-T ABKK MAX6309UK29D3-T ABMA MAX6307UK33D2-T ABHF MAX6309UK50D4-T ABIV MAX6309UK39D2-T ABKL MAX6309UK29D4-T ABMB MAX6307UK33D3-T ABHG MAX6309UK49D1-T ABIW MAX6309UK39D3-T ABKM MAX6309UK28D1-T ABMC MAX6307UK33D4-T ABHH MAX6309UK49D2-T ABIX MAX6309UK39D4-T ABKN MAX6309UK28D2-T ABMD MAX6307UK32D1-T ABHI MAX6309UK49D3-T ABIY MAX6309UK38D1-T ABKO MAX6309UK28D3-T ABME MAX6307UK32D2-T ABHJ MAX6309UK49D4-T ABIZ MAX6309UK38D2-T ABKP MAX6309UK28D4-T ABMF MAX6307UK32D3-T ABHK MAX6309UK48D1-T ABJA MAX6309UK38D3-T ABKQ MAX6309UK27D1-T ABMG MAX6307UK32D4-T ABHL MAX6309UK48D2-T ABJB MAX6309UK38D4-T ABKR MAX6309UK27D2-T ABMH MAX6307UK31D1-T ABHM MAX6309UK48D3-T ABJC MAX6309UK37D1-T ABKS MAX6309UK27D3-T ABMI MAX6307UK31D2-T ABHN MAX6309UK48D4-T ABJD MAX6309UK37D2-T ABKT MAX6309UK27D4-T ABMJ MAX6307UK31D3-T ABHO MAX6309UK47D1-T ABJE MAX6309UK37D3-T ABKU MAX6309UK26D1-T ABMK MAX6307UK31D4-T ABHP MAX6309UK47D2-T ABJF MAX6309UK37D4-T ABKV MAX6309UK26D2-T ABML MAX6307UK30D1-T ABHQ MAX6309UK47D3-T ABJG MAX6309UK36D1-T ABKW MAX6309UK26D3-T ABMM MAX6307UK30D2-T ABHR MAX6309UK47D4-T ABJH MAX6309UK36D2-T ABKX MAX6309UK26D4-T ABMN MAX6307UK30D3-T ABHS MAX6309UK46D1-T ABJI MAX6309UK36D3-T ABKY MAX6309UK25D1-T ABMO MAX6307UK30D4-T ABHT MAX6309UK46D2-T ABJJ MAX6309UK36D4-T ABKZ MAX6309UK25D2-T ABMP MAX6307UK29D1-T ABHU MAX6309UK46D3-T ABJK MAX6309UK35D1-T ABLA MAX6309UK25D3-T ABMQ MAX6307UK29D2-T ABHV MAX6309UK46D4-T ABJL MAX6309UK35D2-T ABLB MAX6309UK25D4-T ABMR MAX6307UK29D3-T ABHW MAX6309UK45D1-T ABJM MAX6309UK35D3-T ABLC MAX6310UK50D1-T ABMS MAX6307UK29D4-T ABHX MAX6309UK45D2-T ABJN MAX6309UK35D4-T ABLD MAX6310UK50D2-T ABMT MAX6307UK28D1-T ABHY MAX6309UK45D3-T ABJO MAX6309UK34D1-T ABLE MAX6310UK50D3-T ABMU MAX6307UK28D2-T ABHZ MAX6309UK45D4-T ABJP MAX6309UK34D2-T ABLF MAX6310UK50D4-T ABMV MAX6307UK28D3-T ABIA MAX6309UK44D1-T ABJQ MAX6309UK34D3-T ABLG MAX6310UK49D1-T ABMW MAX6307UK28D4-T ABIB MAX6309UK44D2-T ABJR MAX6309UK34D4-T ABLH MAX6310UK49D2-T ABMX MAX6307UK27D1-T ABIC MAX6309UK44D3-T ABJS MAX6309UK33D1-T ABLI MAX6310UK49D3-T ABMY MAX6307UK27D2-T ABID MAX6309UK44D4-T ABJT MAX6309UK33D2-T ABLJ MAX6310UK49D4-T ABMZ MAX6307UK27D3-T ABIE MAX6309UK43D1-T ABJU MAX6309UK33D3-T ABLK MAX6310UK48D1-T ABNA MAX6307UK27D4-T ABIF MAX6309UK43D2-T ABJV MAX6309UK33D4-T ABLL MAX6310UK48D2-T ABNB MAX6307UK26D1-T ABIG MAX6309UK43D3-T ABJW MAX6309UK32D1-T ABLM MAX6310UK48D3-T ABNC MAX6307UK26D2-T ABIH MAX6309UK43D4-T ABJX MAX6309UK32D2-T ABLN MAX6310UK48D4-T ABND MAX6307UK26D3-T ABII MAX6309UK42D1-T ABJY MAX6309UK32D3-T ABLO MAX6310UK47D1-T ABNE MAX6307UK26D4-T ABIJ MAX6309UK42D2-T ABJZ MAX6309UK32D4-T ABLP MAX6310UK47D2-T ABNF MAX6307UK25D1-T ABIK MAX6309UK42D3-T ABKA MAX6309UK31D1-T ABLQ MAX6310UK47D3-T ABNG MAX6307UK25D2-TABILMAX6309UK42D4-TABKBMAX6309UK31D2-TABLRMAX6310UK47D4-TABNHDEVICECODE DEVICECODE DEVICECODE DEVICECODEMAX6305–MAX6313Programmable Reset ICs______________________________________________________________________________________11Table 2. Device Marking Codes (continued)MAX6310UK46D1-T ABNI MAX6310UK36D3-T ABOY MAX6310UK25D1-T ABQO MAX6312UK42D3-T ABSE MAX6310UK46D2-T ABNJ MAX6310UK36D4-T ABOZ MAX6310UK25D2-T ABQP MAX6312UK42D4-T ABSF MAX6310UK46D3-T ABNK MAX6310UK35D1-T ABPA MAX6310UK25D3-T ABQQ MAX6312UK41D1-T ABSG MAX6310UK46D4-T ABNL MAX6310UK35D2-T ABPB MAX6310UK25D4-T ABQR MAX6312UK41D2-T ABSH MAX6310UK45D1-T ABNM MAX6310UK35D3-T ABPC MAX6311UK00D1-T ABQS MAX6312UK41D3-T ABSI MAX6310UK45D2-T ABNN MAX6310UK35D4-T ABPD MAX6311UK00D2-T ABQT MAX6312UK41D4-T ABSJ MAX6310UK45D3-T ABNO MAX6310UK34D1-T ABPE MAX6311UK00D3-T ABQU MAX6312UK40D1-T ABSK MAX6310UK45D4-T ABNP MAX6310UK34D2-T ABPF MAX6311UK00D4-T ABQV MAX6312UK40D2-T ABSL MAX6310UK44D1-T ABNQ MAX6310UK34D3-T ABPG MAX6311UK50D1-T ABQW MAX6312UK40D3-T ABSM MAX6310UK44D2-T ABNR MAX6310UK34D4-T ABPH MAX6312UK50D2-T ABQX MAX6312UK40D4-T ABSN MAX6310UK44D3-T ABNS MAX6310UK33D1-T ABPI MAX6312UK50D3-T ABQY MAX6312UK39D1-T ABSO MAX6310UK44D4-T ABNT MAX6310UK33D2-T ABPJ MAX6312UK50D4-T ABQZ MAX6312UK39D2-T ABSP MAX6310UK43D1-T ABNU MAX6310UK33D3-T ABPK MAX6312UK49D1-T ABRA MAX6312UK39D3-T ABSQ MAX6310UK43D2-T ABNV MAX6310UK33D4-T ABPL MAX6312UK49D2-T ABRB MAX6312UK39D4-T ABSR MAX6310UK43D3-T ABNW MAX6310UK32D1-T ABPM MAX6312UK49D3-T ABRC MAX6312UK38D1-T ABSS MAX6310UK43D4-T ABNX MAX6310UK32D2-T ABPN MAX6312UK49D4-T ABRD MAX6312UK38D2-T ABST MAX6310UK42D1-T ABNY MAX6310UK32D3-T ABPO MAX6312UK48D1-T ABRE MAX6312UK38D3-T ABSU MAX6310UK42D2-T ABNZ MAX6310UK32D4-T ABPP MAX6312UK48D2-T ABRF MAX6312UK38D4-T ABSV MAX6310UK42D3-T ABOA MAX6310UK31D1-T ABPQ MAX6312UK48D3-T ABRG MAX6312UK37D1-T ABSW MAX6310UK42D4-T ABOB MAX6310UK31D2-T ABPR MAX6312UK48D4-T ABRH MAX6312UK37D2-T ABSX MAX6310UK41D1-T ABOC MAX6310UK31D3-T ABPS MAX6312UK47D1-T ABRI MAX6312UK37D3-T ABSY MAX6310UK41D2-T ABOD MAX6310UK31D4-T ABPT MAX6312UK47D2-T ABRJ MAX6312UK37D4-T ABSZ MAX6310UK41D3-T ABOE MAX6310UK30D1-T ABPU MAX6312UK47D3-T ABRK MAX6312UK36D1-T ABTA MAX6310UK41D4-T ABOF MAX6310UK30D2-T ABPV MAX6312UK47D4-T ABRL MAX6312UK36D2-T ABTB MAX6310UK40D1-T ABOG MAX6310UK30D3-T ABPW MAX6312UK46D1-T ABRM MAX6312UK36D3-T ABTC MAX6310UK40D2-T ABOH MAX6310UK30D4-T ABPX MAX6312UK46D2-T ABRN MAX6312UK36D4-T ABTD MAX6310UK40D3-T ABOI MAX6310UK29D1-T ABPY MAX6312UK46D3-T ABRO MAX6312UK35D1-T ABTE MAX6310UK40D4-T ABOJ MAX6310UK29D2-T ABPZ MAX6312UK46D4-T ABRP MAX6312UK35D2-T ABTF MAX6310UK39D1-T ABOK MAX6310UK29D3-T ABQA MAX6312UK45D1-T ABRQ MAX6312UK35D3-T ABTG MAX6310UK39D2-T ABOL MAX6310UK29D4-T ABQB MAX6312UK45D2-T ABRR MAX6312UK35D4-T ABTH MAX6310UK39D3-T ABOM MAX6310UK28D1-T ABQC MAX6312UK45D3-T ABRS MAX6312UK34D1-T ABTI MAX6310UK39D4-T ABON MAX6310UK28D2-T ABQD MAX6312UK45D4-T ABRT MAX6312UK34D2-T ABTJ MAX6310UK38D1-T ABOO MAX6310UK28D3-T ABQE MAX6312UK44D1-T ABRU MAX6312UK34D3-T ABTK MAX6310UK38D2-T ABOP MAX6310UK28D4-T ABQF MAX6312UK44D2-T ABRV MAX6312UK34D4-T ABTL MAX6310UK38D3-T ABOQ MAX6310UK27D1-T ABQG MAX6312UK44D3-T ABRW MAX6312UK33D1-T ABTM MAX6310UK38D4-T ABOR MAX6310UK27D2-T ABQH MAX6312UK44D4-T ABRX MAX6312UK33D2-T ABTN MAX6310UK37D1-T ABOS MAX6310UK27D3-T ABQI MAX6312UK43D1-T ABRY MAX6312UK33D3-T ABTO MAX6310UK37D2-T ABOT MAX6310UK27D4-T ABQJ MAX6312UK43D2-T ABRZ MAX6312UK33D4-T ABTP MAX6310UK37D3-T ABOU MAX6310UK26D1-T ABQK MAX6312UK43D3-T ABSA MAX6312UK32D1-T ABTQ MAX6310UK37D4-T ABOV MAX6310UK26D2-T ABQL MAX6312UK43D4-T ABSB MAX6312UK32D2-T ABTR MAX6310UK36D1-T ABOW MAX6310UK26D3-T ABQM MAX6312UK42D1-T ABSC MAX6312UK32D3-T ABTS MAX6310UK36D2-TABOXMAX6310UK26D4-TABQNMAX6312UK42D2-TABSDMAX6312UK32D4-TABTTDEVICECODE DEVICECODE DEVICECODE DEVICECODEM A X 6305–M A X 6313Programmable Reset ICs 12______________________________________________________________________________________Table 2. Device Marking Codes (continued)MAX6313UK49D2-T ABVB MAX6313UK49D3-T ABVC MAX6313UK49D4-T ABVD MAX6313UK48D1-T ABVE MAX6313UK48D2-T ABVF MAX6313UK48D3-T ABVG MAX6313UK48D4-T ABVH MAX6313UK47D1-T ABVI MAX6313UK47D2-T ABVJ MAX6313UK47D3-T ABVK MAX6313UK47D4-T ABVL MAX6313UK46D1-T ABVM MAX6313UK46D2-T ABVN MAX6313UK46D3-T ABVO MAX6313UK46D4-T ABVP MAX6313UK45D1-T ABVQ MAX6313UK45D2-T ABVR MAX6313UK45D3-T ABVS MAX6313UK45D4-T ABVT MAX6313UK44D1-T ABVU MAX6313UK44D2-T ABVV MAX6313UK44D3-T ABVW MAX6313UK44D4-T ABVX MAX6313UK43D1-T ABVY MAX6313UK43D2-T ABVZ MAX6313UK43D3-T ABWA MAX6313UK43D4-T ABWB MAX6313UK42D1-T ABWC MAX6313UK42D2-T ABWD MAX6313UK42D3-T ABWE MAX6313UK42D4-T ABWF MAX6313UK41D1-T ABWG MAX6313UK41D2-TABWHDEVICECODE DEVICECODE DEVICECODE DEVICECODE MAX6313UK33D4-T ABXP MAX6313UK32D1-T ABXQ MAX6313UK32D2-T ABXR MAX6313UK32D3-T ABXS MAX6313UK32D4-T ABXT MAX6313UK31D1-T ABXU MAX6313UK31D2-T ABXV MAX6313UK31D3-T ABXW MAX6313UK31D4-T ABXX MAX6313UK30D1-T ABXY MAX6313UK30D2-T ABXZ MAX6313UK30D3-T ABYA MAX6313UK30D4-T ABYB MAX6313UK29D1-T ABYC MAX6313UK29D2-T ABYD MAX6313UK29D3-T ABYE MAX6313UK29D4-T ABYF MAX6313UK28D1-T ABYG MAX6313UK28D2-T ABYH MAX6313UK28D3-T ABYI MAX6313UK28D4-T ABYJ MAX6313UK27D1-T ABYK MAX6313UK27D2-T ABYL MAX6313UK27D3-T ABYM MAX6313UK27D4-T ABYN MAX6313UK26D1-T ABYO MAX6313UK26D2-T ABYP MAX6313UK26D3-T ABYQ MAX6313UK26D4-T ABYR MAX6313UK25D1-T ABYS MAX6313UK25D2-T ABYT MAX6313UK25D3-T ABYU MAX6313UK25D4-TABYVMAX6313UK41D3-T ABWI MAX6313UK41D4-T ABWJ MAX6313UK40D1-T ABWK MAX6313UK40D2-T ABWL MAX6313UK40D3-T ABWM MAX6313UK40D4-T ABWN MAX6313UK39D1-T ABWO MAX6313UK39D2-T ABWP MAX6313UK39D3-T ABWQ MAX6313UK39D4-T ABWR MAX6313UK38D1-T ABWS MAX6313UK38D2-T ABWT MAX6313UK38D3-T ABWU MAX6313UK38D4-T ABWV MAX6313UK37D1-T ABWW MAX6313UK37D2-T ABWX MAX6313UK37D3-T ABWY MAX6313UK37D4-T ABWZ MAX6313UK36D1-T ABXA MAX6313UK36D2-T ABXB MAX6313UK36D3-T ABXC MAX6313UK36D4-T ABXD MAX6313UK35D1-T ABXE MAX6313UK35D2-T ABXF MAX6313UK35D3-T ABXG MAX6313UK35D4-T ABXH MAX6313UK34D1-T ABXI MAX6313UK34D2-T ABXJ MAX6313UK34D3-T ABXK MAX6313UK34D4-T ABXL MAX6313UK33D1-T ABXM MAX6313UK33D2-T ABXN MAX6313UK33D3-TABXOMAX6312UK31D1-T ABTU MAX6312UK31D2-T ABTV MAX6312UK31D3-T ABTW MAX6312UK31D4-T ABTX MAX6312UK30D1-T ABTY MAX6312UK30D2-T ABTZ MAX6312UK30D3-T ABUA MAX6312UK30D4-T ABUB MAX6312UK29D1-T ABUC MAX6312UK29D2-T ABUD MAX6312UK29D3-T ABUE MAX6312UK29D4-T ABUF MAX6312UK28D1-T ABUG MAX6312UK28D2-T ABUH MAX6312UK28D3-T ABUI MAX6312UK28D4-T ABUJ MAX6312UK27D1-T ABUK MAX6312UK27D2-T ABUL MAX6312UK27D3-T ABUM MAX6312UK27D4-T ABUN MAX6312UK26D1-T ABUO MAX6312UK26D2-T ABUP MAX6312UK26D3-T ABUQ MAX6312UK26D4-T ABUR MAX6312UK25D1-T ABUS MAX6312UK25D2-T ABUT MAX6312UK25D3-T ABUU MAX6312UK25D4-T ABUV MAX6313UK50D1-T ABUW MAX6313UK50D2-T ABUX MAX6313UK50D3-T ABUY MAX6313UK50D4-T ABUZ MAX6313UK49D1-TABVA。

MAX6193CESA中文资料

General DescriptionThe MAX6190–MAX6195/MAX6198 precision, micro-power, low-dropout voltage references offer high initial accuracy and very low temperature coefficient through a proprietary curvature-correction circuit and laser-trimmed precision thin-film resistors.These series-mode bandgap references draw a maxi-mum of only 35µA quiescent supply current, making them ideal for battery-powered instruments. They offer a supply current that is virtually immune to input volt-age variations. Load-regulation specifications are guaranteed for source and sink currents up to 500µA.These devices are internally compensated, making them ideal for applications that require fast settling,and are stable with capacitive loads up to 2.2nF.Featureso ±2mV (max) Initial Accuracyo 5ppm/°C (max) Temperature Coefficient o 35µA (max) Supply Currento 100mV Dropout at 500µA Load Current o 0.12µV/µA Load Regulation o 8µV/V Line RegulationApplicationsHand-Held InstrumentsAnalog-to-Digital and Digital-to-Analog Converters Industrial Process Control Precision 3V/5V Systems Hard-Disk DrivesMAX6190–MAX6195/MAX6198Precision, Micropower,Low-Dropout Voltage References________________________________________________________________Maxim Integrated Products 119-1408; Rev 2; 10/01Ordering InformationSelector GuideTypical Operating Circuit appears at end of data sheet.Pin ConfigurationFor pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Ordering Information continued at end of data sheet.M A X 6190–M A X 6195/M A X 6198Precision, Micropower,Low-Dropout Voltage References 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS —MAX6190(V IN = 5V, I OUT = 0, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.Voltages Referenced to GNDIN......................................................................-0.3V to +13.5V OUT ..........................................................-0.3V to (V IN + 0.3V)Output Short Circuit to GND or IN (V IN < 6V)............Continuous Output Short Circuit to GND or IN (V IN ≥6V).........................60sContinuous Power Dissipation (T A = +70°C)8-Pin SO (derate 5.88mW/°C above +70°C)................471mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°CMAX6190–MAX6195/MAX6198Precision, Micropower,Low-Dropout Voltage References_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS —MAX6191(V IN = 5V, I OUT = 0, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)M A X 6190–M A X 6195/M A X 6198Precision, Micropower,Low-Dropout Voltage References 4_______________________________________________________________________________________ELECTRICAL CHARACTERISTICS —MAX6192(V IN = 5V, I OUT = 0, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)MAX6190–MAX6195/MAX6198Precision, Micropower,Low-Dropout Voltage References_______________________________________________________________________________________5ELECTRICAL CHARACTERISTICS —MAX6193(V IN = 5V, I OUT = 0, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)M A X 6190–M A X 6195/M A X 6198Precision, Micropower,Low-Dropout Voltage References 6_______________________________________________________________________________________ELECTRICAL CHARACTERISTICS —MAX6194(V IN = 5V, I OUT = 0, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)MAX6190–MAX6195/MAX6198Precision, Micropower,Low-Dropout Voltage References_______________________________________________________________________________________7ELECTRICAL CHARACTERISTICS —MAX6195(V IN = 5.5V, I OUT = 0, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)M A X 6190–M A X 6195/M A X 6198Precision, Micropower,Low-Dropout Voltage References 8_______________________________________________________________________________________ELECTRICAL CHARACTERISTICS —MAX6198(V IN = 5V, I OUT = 0, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)Note 1:Temperature Coefficient is measured by the “box” method; i.e., the maximum ∆V OUT is divided by the maximum ∆t.Note 2:Thermal Hysteresis is defined as the change in +25°C output voltage before and after cycling the device from T MIN to T MAX .Note 3:Not production tested. Guaranteed by design.Note 4:Dropout voltage is the minimum input voltage at which V OUT changes ≤0.2% from V OUT at V IN = 5.0V (V IN = 5.5V for MAX6195).MAX6190–MAX6195/MAX6198Precision, Micropower,Low-Dropout Voltage References_______________________________________________________________________________________9Typical Operating Characteristics(V IN = 5V for MAX6190/1/2/3/4/8, V IN = 5.5V for MAX6195; I OUT = 0; T A = +25°C; unless otherwise noted.) (Note 5)1.24941.24961.25001.24981.25061.25041.25021.2508-40-2020406080100MAX6190OUTPUT VOLTAGE TEMPERATURE DRIFTTEMPERATURE DRIFT (°C)V O U T (V )4.99955.00055.00005.00205.00155.00105.00355.00305.00255.0040-4020-20406080100MAX6195OUTPUT VOLTAGE TEMPERATURE DRIFTTEMPERATURE DRIFT (°C)V O U T (V )4.9934.9954.9944.9994.9984.9974.9965.0025.0015.0005.00303004005001002006007008009001000MAX6195LONG-TERM DRIFTTIME (HOURS)O U T P U T V O L T A G E (V )-1002001003004002648101214MAX6190LINE REGULATIONINPUT VOLTAGE (V)O U T P U T V O L T A G E C H A N G E (µV )-0.4-0.20.20.4-500-2500250-375-125125375500MAX6190LOAD REGULATIONLOAD CURRENT (µA)O U T P U T V O L T A G E C H A N G E (m V )-2004002006008005791113MAX6195LINE REGULATIONINPUT VOLTAGE (V)O U T P U T V O L T A G E C H A N G E (µV )0.10.20.30.40.50.60.70.82004006008001000MAX6192/MAX6193DROPOUT VOLTAGE vs. SOURCE CURRENTSOURCE CURRENT (µA)D R O P O U T V O L T A GE (V )-0.4-0.20.20.4-500-2500250-375-125125375500MAX6195LOAD REGULATIONLOAD CURRENT (µA)O U T P U T V O L T A G E C H A N G E (m V )0.100.050.200.150.250.3004002006008001000MAX6194/MAX6195/MAX6198DROPOUT VOLTAGE vs. SOURCE CURRENTSOURCE CURRENT (µA)D R O P O U T V O L T A GE (V )M A X 6190–M A X 6195/M A X 6198Precision, Micropower,Low-Dropout Voltage References 10______________________________________________________________________________________1001k10k100k1M10MMAX6190POWER-SUPPLY REJECTIONvs. FREQUENCYM A X 6190 t o c 10FREQUENCY (Hz)P S R (m V /V )1000.010.1110MAX6195POWER-SUPPLY REJECTIONvs. FREQUENCYFREQUENCY (Hz)P S R (m V /V )1000.010.11101010k100k1M1001k10M20262422283032343638402648101214SUPPLY CURRENT vs. INPUT VOLTAGEINPUT VOLTAGE (V)S U P P L Y C U R R E N T (µA )0.0110010k 10.1101k100k 1MMAX6190OUTPUT IMPEDANCE vs. FREQUENCYM A X 6190 t o c 13FREQUENCY (Hz)O U T P U T I M P E D A N C E (Ω)0.11101001k V OUT 10µV/div1s/div MAX61900.1Hz TO 10Hz OUTPUT NOISEM A X 6190 t o c 160.0110010k 10.1101k100k 1MMAX6195OUTPUT IMPEDANCE vs. FREQUENCYM A X 6190 t o c 14FREQUENCY (Hz)O U T P U T I M P E D A N C E (Ω)0.11101001k 2025303540SUPPLY CURRENTvs. TEMPERATURETEMPERATURE (°C)S U P P L Y C UR R E N T (µA )-402040-206080100V OUT 20µV/div1s/div MAX61950.1Hz TO 10Hz OUTPUT NOISEM A X 6190 t o c 17V IN 1V/divV OUT 1V/div10µs/divMAX6190TURN-ON TRANSIENTM A X 6190 t o c 18Typical Operating Characteristics (continued)(V IN = 5V for MAX6190/1/2/3/4/8, V IN = 5.5V for MAX6195; I OUT = 0; T A = +25°C; unless otherwise noted.) (Note 5)MAX6190–MAX6195/MAX6198Precision, Micropower,Low-Dropout Voltage References______________________________________________________________________________________11Typical Operating Characteristics (continued)(V IN = 5V for MAX6190/1/2/3/4/8, V IN = 5.5V for MAX6195; I OUT = 0; T A = +25°C; unless otherwise noted.) (Note 5)I OUT 40µA/div+25µA-25µAV OUT 20mV/div10µs/divMAX6190LOAD-TRANSIENT RESPONSEMAX6190 toc19I OUT = ±25µA, AC-COUPLEDI OUT 50µA/divV OUT 50mV/div20µs/divMAX6195LOAD-TRANSIENT RESPONSEM A X 6190 t o c 20V IN = 5.5V, I OUT = ±25µA, AC-COUPLEDV IN 2V/divV OUT 2V/div10µs/divMAX6195TURN-ON TRANSIENTM A X 6190 t o c 21+500µA-500µA V OUT 0.2V/divI OUT 1mA/div10µs/divMAX6190LOAD-TRANSIENT RESPONSEMAX6190 toc22I OUT = ±500µA, AC-COUPLEDV IN200mV/divV OUT 100mV/div2µs/divV IN = 5.5V ±0.25V, AC-COUPLEDMAX6195LINE-TRANSIENT RESPONSEM A X 6190 t o c 25I OUT00µA/divV OUT 00mV/div20µs/divMAX6195LOAD-TRANSIENT RESPONSEM A X 6190 t o c 23V IN = 5.5V, I OUT = ±500µA, AC-COUPLED V IN200mV/divV OUT 100mV/div2.5µs/divV IN = 5V ±0.25V, AC-COUPLEDMAX6190LINE-TRANSIENT RESPONSEM A X 6190 t o c 24Note 5:Many of the Typical Operating Characteristics of the MAX6190 family areextremely similar. The extremes of these characteristics are found in theMAX6190 (1.2V output) and the MAX6195 (5.0V output) devices. The Typical Operating Characteristics of the remainder of the MAX6190 family typically lie between these two extremes and can be estimated based on their output voltage.M A X 6190–M A X 6195/M A X 6198Precision, Micropower,Low-Dropout Voltage References 12______________________________________________________________________________________Detailed DescriptionThe MAX6190–MAX6195/MAX6198 precision bandgap references use a proprietary curvature-correction circuit and laser-trimmed thin-film resistors, resulting in a low temperature coefficient of <5ppm/°C and initial accura-cy of better than 0.1%. These devices can sink and source up to 500µA with <200mV of dropout voltage,making them attractive for use in low-voltage applica-tions.Applications InformationOutput/Load CapacitanceDevices in this family do not require an output capaci-tance for frequency stability. They are stable for capac-itive loads from 0 to 2.2nF. H owever, in applications where the load or the supply can experience step changes, an output capacitor will reduce the amount of overshoot (or undershoot) and assist the circuit’s tran-sient response. Many applications do not need an external capacitor, and this family can offer a signifi-cant advantage in these applications when board space is critical.Supply CurrentThe quiescent supply current of these series-mode ref-erences is a maximum of 35µA and is virtually indepen-dent of the supply voltage, with only a 0.8µA/V variation with supply voltage. Unlike series references, shunt-mode references operate with a series resistor connect-ed to the power supply. The quiescent current of a shunt-mode reference is thus a function of the inputvoltage. Additionally, shunt-mode references have to be biased at the maximum expected load current, even if the load current is not present all the time. In the series-mode MAX6190 family, the load current is drawn from the input voltage only when required, so supply current is not wasted and efficiency is maximized at all input voltages. This improved efficiency can help reduce power dissipation and extend battery life.When the supply voltage is below the minimum speci-fied input voltage (as during turn-on), the devices can draw up to 200µA beyond the nominal supply current.The input voltage source must be capable of providing this current to ensure reliable turn-on.Output Voltage HysteresisOutput voltage hysteresis is the change in the output voltage at T A = +25°C before and after the device is cycled over its entire operating temperature range.H ysteresis is caused by differential package stress appearing across the bandgap core transistors. The typical temperature hysteresis value is 75ppm.Turn-On TimeThese devices typically turn on and settle to within 0.1% of their final value in 30µs to 220µs, depending on the device. The turn-on time can increase up to 1.5ms with the device operating at the minimum dropout volt-age and the maximum load.Positive and Negative Low-PowerVoltage ReferenceFigure 1 shows a typical method for developing a bipo-lar reference. The circuit uses a MAX681 voltage dou-bler/inverter charge-pump converter to power an ICL7652, thus creating a positive as well as a negative reference voltage.MAX6190–MAX6195/MAX6198Precision, Micropower,Low-Dropout Voltage References______________________________________________________________________________________13Figure 1. Positive and Negative References from Single 3V or 5V SupplyTypical Operating CircuitOrdering Information (continued)Chip InformationTRANSISTOR COUNT: 70M A X 6190–M A X 6195/M A X 6198Precision, Micropower,Low-Dropout Voltage References Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.14____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©2001 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.Package Information。

MAX630CSA+中文资料

General DescriptionMaxim’s MAX630 and MAX4193 CMOS DC-DC regula-tors are designed for simple, efficient, minimum-size DC-DC converter circuits in the 5mW to 5W range. The MAX630 and MAX4193 provide all control and power handling functions in a compact 8-pin package: a 1.31V bandgap reference, an oscillator, a voltage com-parator, and a 375mA N-channel output MOSF ET. A comparator is also provided for low-battery detection.Operating current is only 70µA and is nearly indepen-dent of output switch current or duty cycle. A logic-level input shuts down the regulator to less than 1µA quies-cent current. Low-current operation ensures high effi-ciency even in low-power battery-operated systems.The MAX630 and MAX4193 are compatible with most battery voltages, operating from 2.0V to 16.5V.The devices are pin compatible with the Raytheon bipo-lar circuits, RC4191/2/3, while providing significantly improved efficiency and low-voltage operation. Maxim also manufactures the MAX631, MAX632, and MAX633DC-DC converters, which reduce the external compo-nent count in fixed-output 5V, 12V, and 15V circuits.See Table 2 at the end of this data sheet for a summary of other Maxim DC-DC converters.Applications+5V to +15V DC-DC ConvertersHigh-Efficiency Battery-Powered DC-DC Converters+3V to +5V DC-DC Converters 9V Battery Life ExtensionUninterruptible 5V Power Supplies5mW to 5W Switch-Mode Power SuppliesFeatures♦High Efficiency—85% (typ)♦70µA Typical Operating Current ♦1µA Maximum Quiescent Current ♦2.0V to 16.5V Operation♦525mA (Peak) Onboard Drive Capability ♦±1.5% Output Voltage Accuracy (MAX630)♦Low-Battery Detector♦Compact 8-Pin Mini-DIP and SO Packages ♦Pin Compatible with RC4191/2/3MAX630/MAX4193CMOS Micropower Step-UpSwitching Regulator________________________________________________________________Maxim Integrated Products 1Pin ConfigurationOrdering InformationTypical Operating Circuit19-0915; Rev 2; 9/08For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .*Dice are specified at T A = +25°C. Contact factory for dice specifications.**Contact factory for availability and processing to MIL-STD-883.†Contact factory for availibility.M A X 630/M A X 4193CMOS Micropower Step-Up Switching Regulator 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICSStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.Supply Voltage.......................................................................18V Storage Temperature Range ............................-65°C to +160°C Lead Temperature (soldering, 10s).................................+300°C Operating Temperature RangeMAX630C, MAX4193C........................................0°C to +70°C MAX630E, MAX4193E.....................................-40°C to +85°C MAX630M, MAX4193M..................................-55°C to +125°CPower Dissipation8-Pin PDIP (derate 6.25mW/°C above +50°C).............468mW 8-Pin SO (derate 5.88mW/°C above +50°C)................441mW 8-Pin CERDIP (derate 8.33mW/°C above +50°C)........833mW Input Voltage (Pins 1, 2, 6, 7).....................-0.3V to (+V S + 0.3V)Output Voltage, L X and LBD..................................................18V L X Output Current..................................................525mA (Peak)LBD Output Current............................................................50mAMAX630/MAX4193CMOS Micropower Step-UpSwitching Regulator_______________________________________________________________________________________3L X ON-RESISTANCE vs.TEMPERATURETEMPERATURE (°C)L X R O N (Ω)100755025-25-5024680125SUPPLY CURRENT vs.TEMPERATUREM A X 630/4193 t o c 02TEMPERATURE (°C)I S (μA )100755025-25-50402080601201001400125SUPPLY CURRENT vs.SUPPLY VOLTAGEM A X 630/4193 t o c 03+V S (V)I S (μA )14121086425015010025020030016Typical Operating Characteristics(T A = +25°C, unless otherwise noted.)ELECTRICAL CHARACTERISTICSNote 1:Guaranteed by correlation with DC pulse measurements.Note 2:The operating frequency range is guaranteed by design and verified with sample testing.Detailed DescriptionThe operation of the MAX630 can best be understood by examining the voltage regulating loop of F igure 1.R1 and R2 divide the output voltage, which is com-pared with the 1.3V internal reference by comparator COMP1. When the output voltage is lower than desired,the comparator output goes high and the oscillator out-put pulses are passed through the NOR gate latch,turning on the output N-channel MOSFET at pin 3, L X .As long as the output voltage is less than the desired voltage, pin 3 drives the inductor with a series of pulses at the oscillator frequency.Each time the output N-channel MOSFET is turned on,the current through the external coil, L1, increases,storing energy in the coil. Each time the output turns off,the voltage across the coil reverses sign and the volt-age at L X rises until the catch diode, D1, is forward biased, delivering power to the output.When the output voltage reaches the desired level,1.31V x (1 + R1 / R2), the comparator output goes low and the inductor is no longer pulsed. Current is then supplied by the filter capacitor, C1, until the output volt-age drops below the threshold, and once again L X is switched on, repeating the cycle. The average duty cycle at L X is directly proportional to the output current.Output Driver (L X Pin)The MAX630/MAX4193 output device is a large N-channel MOSFET with an on-resistance of 4Ωand a peak current rating of 525mA. One well-known advan-tage that MOSF ETs have over bipolar transistors in switching applications is higher speed, which reduces switching losses and allows the use of smaller, lighter,less costly magnetic components. Also important is that MOSF ETs, unlike bipolar transistors, do not require base current that, in low-power DC-DC converters,often accounts for a major portion of input power.The operating current of the MAX630 and MAX4193increases by approximately 1µA/kHz at maximum power output due to the charging current required by the gate capacitance of the L X output driver (e.g., 40µA increase at a 40kHz operating frequency). In compari-son, equivalent bipolar circuits typically drive their NPN L X output device with 2mA of base drive, causing the bipolar circuit’s operating current to increase by a fac-tor of 10 between no load and full load.OscillatorThe oscillator frequency is set by a single external, low-cost ceramic capacitor connected to pin 2, C X . 47pF sets the oscillator to 40kHz, a reasonable compromise between lower switching losses at low frequencies and reduced inductor size at higher frequencies.M A X 630/M A X 4193CMOS Micropower Step-Up Switching Regulator 4_______________________________________________________________________________________Low-Battery DetectorThe low-battery detector compares the voltage on LBR with the internal 1.31V reference. The output, LBD, is an open-drain N-channel MOSFET. In addition to detecting and warning of a low battery voltage, the comparator can also perform other voltage-monitoring operations such as power-failure detection.Another use of the low-battery detector is to lower the oscillator frequency when the input voltage goes below a specified level. Lowering the oscillator frequency increases the available output power, compensating for the decrease in available power caused by reduced input voltage (see Figure 5).Logic-Level Shutdown InputThe shutdown mode is entered whenever I C (pin 6) is driven below 0.2V or left floating. When shut down, theMAX630’s analog circuitry, oscillator, L X , and LBD out-puts are turned off. The device’s quiescent current dur-ing shutdown is typically 10nA (1µA max).Bootstrapped OperationIn most circuits, the preferred source of +V S voltage for the MAX630 and MAX4193 is the boosted output volt-age. This is often referred to as a “bootstrapped” oper-ation since the circuit figuratively “lifts” itself up.The on-resistance of the N-channel L X output decreas-es with an increase in +V S ; however, the device operat-ing current goes up with +V S (see the Typical Operating Characteristics , I S vs. +V S graph). In circuits with very low output current and input voltages greater than 3V, it may be more efficient to connect +V S direct-ly to the input voltage rather than bootstrap.MAX630/MAX4193CMOS Micropower Step-UpSwitching Regulator_______________________________________________________________________________________5Figure 1. +5V to +15V Converter and Block DiagramM A X 630/M A X 4193External ComponentsResistorsSince the LBR and V FB input bias currents are specified as 10nA (max), the current in the dividers R1/R2 and R3/R4 (Figure 1) may be as low as 1µA without signifi-cantly affecting accuracy. Normally R2 and R4 are between 10k Ωand 1M Ω, which sets the current in the voltage-dividers in the 1.3µA to 130µA range. R1 and R3 can then be calculated as follows:where V OUT is the desired output voltage and V LB isthe desired low-battery warning threshold.If the I C (shutdown) input is pulled up through a resistor rather than connected directly to +V S , the current through the pullup resistor should be a minimum of 4µAInductor ValueThe available output current from a DC-DC voltageboost converter is a function of the input voltage, exter-nal inductor value, output voltage, and the operating frequency.The inductor must 1) have the correct inductance, 2) be able to handle the required peak currents, and 3) have acceptable series resistance and core losses. If the inductance is too high, the MAX630 will not be able to deliver the desired output power, even with the L X out-put on for every oscillator cycle. The available output power can be increased by either decreasing the inductance or the frequency. Reducing the frequency increases the on-period of the L X output, thereby increasing the peak inductor current. The available out-put power is increased since it is proportional to the square of the peak inductor current (I PK ).where P OUT includes the power dissipated in the catchdiode (D1) as well as that in the load. If the inductance is too low, the current at L X may exceed the maximum rating. The minimum allowed inductor value is expressed by:where I MAX ≈525mA (peak L X current) and t ON is the on-time of the L X output.The most common MAX630 circuit is a boost-mode converter (Figure 1). When the N-channel output device is on, the current linearly rises since:At the end of the on-time (14µs for 40kHz, 55% duty-cycle oscillator) the current is:The energy in the coil is:At maximum load, this cycle is repeated 40,000 timesper second, and the power transferred through the coil is 40,000 x 5.25 = 210mW. Since the coil only supplies the voltage above the input voltage, at 15V, the DC-DC converter can supply 210mW / (15V - 5V) = 21mA. The coil provides 210mW and the battery directly supplies another 105mW, for a total of 315mW of output power. If the load draws less than 21mA, the MAX630 turns on its output only often enough to keep the output voltage at a constant 15V.Reducing the inductor value increases the available output current: lower L increases the peak current,thereby increasing the available power. The external inductor required by the MAX630 is readily obtained from a variety of suppliers (Table 1). Standard coils are suitable for most applications.Types of InductorsMolded InductorsThese are cylindrically wound coils that look similar to 1W resistors. They have the advantages of low cost and ease of handling, but have higher resistance, higher losses, and lower power handling capability than other types.102112131131104134131131ΩΩΩΩ≤≤=−≤≤=− .. ..R M R R x V VR M R R x V VOUTLBCMOS Micropower Step-Up Switching Regulator 6_______________________________________________________________________________________Potted Toroidal InductorsA typical 1mH, 0.82Ωpotted toroidal inductor (Dale TE-3Q4TA) is 0.685in in diameter by 0.385in high and mounts directly onto a PC board by its leads. Such devices offer high efficiency and mounting ease, but at a somewhat higher cost than molded inductors.Ferrite Cores (Pot Cores)Pot cores are very popular as switch-mode inductors since they offer high performance and ease of design.The coils are generally wound on a plastic bobbin,which is then placed between two pot core sections. A simple clip to hold the core sections together com-pletes the inductor. Smaller pot cores mount directly onto PC boards through the bobbin terminals. Cores come in a wide variety of sizes, often with the center posts ground down to provide an air gap. The gap pre-vents saturation while accurately defining the induc-tance per turn squared.Pot cores are suitable for all DC-DC converters, but are usually used in the higher power applications. They are also useful for experimentation since it is easy to wind coils onto the plastic bobbins.Toroidal CoresIn volume production, the toroidal core offers high per-formance, low size and weight, and low cost. They are,however, slightly more difficult for prototyping, in that manually winding turns onto a toroid is more tedious than on the plastic bobbins used with pot cores.Toroids are more efficient for a given size since the flux is more evenly distributed than in a pot core, where the effective core area differs between the post, side, top,and bottom.Since it is difficult to gap a toroid, manufacturers produce toroids using a mixture of ferromagnetic powder (typically iron or Mo-Permalloy powder) and a binder. The perme-ability is controlled by varying the amount of binder,which changes the effective gap between the ferromag-netic particles. Mo-Permalloy powder (MPP) cores have lower losses and are recommended for the highest effi-ciency, while iron powder cores are lower cost.DiodesIn most MAX630 circuits, the inductor current returns to zero before L X turns on for the next output pulse. This allows the use of slow turn-off diodes. On the other hand, the diode current abruptly goes from zero to full peak current each time L X switches off (Figure 1, D1).To avoid excessive losses, the diode must therefore have a fast turn-on time.F or low-power circuits with peak currents less than 100mA, signal diodes such as 1N4148s perform well.For higher-current circuits, or for maximum efficiency at low power, the 1N5817 series of Schottky diodes are recommended. Although 1N4001s and other general-purpose rectifiers are rated for high currents, they are unacceptable because their slow turn-on time results in excessive losses.MAX630/MAX4193CMOS Micropower Step-UpSwitching Regulator_______________________________________________________________________________________7Table 1. Coil and Core ManufacturersM A X 630/M A X 4193Filter CapacitorThe output-voltage ripple has two components, with approximately 90 degrees phase difference between them. One component is created by the change in the capacitor’s stored charge with each output pulse. The other ripple component is the product of the capacitor’s charge/discharge current and its effective series resis-tance (ESR). With low-cost aluminum electrolytic capacitors, the ESR-produced ripple is generally larger than that caused by the change in charge.where V IN is the coil input voltage, L is its inductance, f is the oscillator frequency, and ESR is the equivalent series resistance of the filter capacitor.The output ripple resulting from the change in charge on the filter capacitor is:where t CHG and t DIS are the charge and dischargetimes for the inductor (1/2f can be used for nominal cal-culations).Oscillator Capacitor, C XThe oscillator capacitor, C X , is a noncritical ceramic or silver mica capacitor. C X can also be calculated by:where f is the desired operating frequency in Hertz, and C INT is the sum of the stray capacitance on the C X pin and the internal capacitance of the package. The internal capacitance is typically 1pF for the plastic package and 3pF for the CERDIP package. Typical stray capacitances are about 3pF for normal PC board layouts, but will be significantly higher if a socket is used.Bypassing and CompensationSince the inductor-charging current can be relatively large, high currents can flow through the ground con-nection of the MAX630/MAX4193. To prevent unwanted feedback, the impedance of the ground path must be as low as possible, and supply bypassing should be used for the device.When large values (>50k Ω) are used for the voltage-setting resistors, R1 and R2 of F igure 1, stray capaci-tance at the V FB input can add a lag to the feedback response, destabilizing the regulator, increasing low-frequency ripple, and lowering efficiency. This can often be avoided by minimizing the stray capacitance at the V FB node. It can also be remedied by adding a lead compensation capacitor of 100pF to 10nF in paral-lel with R1 in Figure 1.DC-DC Converter ConfigurationsDC-DC converters come in three basic topologies:buck, boost, and buck-boost (Figure 2). The MAX630 is usually operated in the positive-voltage boost circuit,where the output voltage is greater than the input.The boost circuit is used where the input voltage is always less than the desired output and the buck circuit is used where the input is greater than the output. Thebuck-boost circuit inverts, and can be used with, inputCMOS Micropower Step-Up Switching Regulator 8_______________________________________________________________________________________Figure 2. DC-DC Converter Configurationsvoltages that are either greater or less than the output. DC-DC converters can also be classified by the control method. The two most common are pulse-width modu-lation (PWM) and pulse-frequency modulation (PF M). PWM switch-mode power-supply ICs (of which current-mode control is one variant) are well-established in high-power off-line switchers. Both PWM and PF M cir-cuits control the output voltage by varying duty cycle. In the PWM circuit, the frequency is held constant and the width of each pulse is varied. In the PFM circuit, the pulse width is held constant and duty cycle is con-trolled by changing the pulse repetition rate.The MAX630 refines the basic PFM by employing a con-stant-frequency oscillator. Its output MOSFET is switched on when the oscillator is high and the output voltages is lower than desired. If the output voltage is higher than desired, the MOSFET output is disabled for that oscillator cycle. This pulse skipping varies the average duty cycle, and thereby controls the output voltage.Note that, unlike the PWM ICs, which use an op amp as the control element, the MAX630 uses a comparator tocompare the output voltage to an onboard reference. This reduces the number of external components and operating current.Typical Applications+5V to +15V DC-DC Converter Figure 1 shows a simple circuit that generates +15V at approximately 20mA from a +5V input. The MAX630 has a ±1.5% reference accuracy, so the output voltage has an untrimmed accuracy of ±3.5% if R1 and R2 are 1% resistors. Other output voltages can also be select-ed by changing the feedback resistors. Capacitor C X sets the oscillator frequency (47pF = 40kHz), while C1 limits output ripple to about 50mV.With a low-cost molded inductor, the circuit’s efficiency is about 75%, but an inductor with lower series resis-tance such as the Dale TE3Q4TA increases efficiency to around 85%. A key to high efficiency is that the MAX630 itself is powered from the +15V output. This provides the onboard N-channel output device with 15V gate drive, lowering its on-resistance to about 4Ω. When +5V power is first applied, current flows through L1 and D1, supplying the MAX630 with 4.4V for startup.+5V to ±15V DC-DC Converter The circuit in F igure 3 is similar to that of F igure 1 except that two more windings are added to the induc-tor. The 1408 (14mm x 8mm) pot core specified is an IEC standard size available from many manufacturers (see Table 1). The -15V output is semiregulated, typi-cally varying from -13.6V to -14.4V as the +15V load current changes from no load to 20mA.2.5W, 3V to 5V DC-DC ConverterSome systems, although battery powered, need high currents for short periods, and then shut down to a low-power state. The extra circuitry of Figure 4 is designed tomeet these high-current needs. Operating in the buck-boost or flyback mode, the circuit converts -3V to +5V.The left side of Figure 4 is similar to Figure 1 and sup-plies 15V for the gate drive of the external power MOS-FET. This 15V gate drive ensures that the external deviceis completely turned on and has low on-resistance.The right side of F igure 4 is a -3V to +5V buck-boost converter. This circuit has the advantage that when theMAX630 is turned off, the output voltage falls to 0V,unlike the standard boost circuit, where the output volt-age is V BATT- 0.6V when the converter is shut down.When shut down, this circuit uses less than 10µA, withmost of the current being the leakage current of the power MOSFET.The inductor and output-filter capacitor values havebeen selected to accommodate the increased power levels. With the values indicated, this circuit can supplyup to 500mA at 5V, with 85% efficiency. Since the leftside of the circuit powers only the right-hand MAX630,the circuit starts up with battery voltages as low as1.5V, independent of the loading on the +5V output.MAX630/MAX4193CMOS Micropower Step-UpSwitching Regulator _______________________________________________________________________________________9M A X 630/M A X 4193+3V Battery to +5V DC-DC ConverterA common power-supply requirement involves conver-sion of a 2.4V or 3V battery voltage to a 5V logic sup-ply. The circuit in Figure 5 converts 3V to 5V at 40mA with 85% efficiency. When I C (pin 6) is driven low, the output voltage will be the battery voltage minus the drop across diode D1.The optional circuitry using C1, R3, and R4 lowers the oscillator frequency when the battery voltage falls to 2.0V. This lower frequency maintains the output-power capability of the circuit by increasing the peak inductor current, compensating for the reduced battery voltage.Uninterruptable +5V SupplyIn Figure 6, the MAX630 provides a continuous supply of regulated +5V, with automatic switchover between line power and battery backup. When the line-powered input voltage is at +5V, it provides 4.4V to the MAX630and trickle charges the battery. If the line-powered input falls below the battery voltage, the 3.6V battery supplies power to the MAX630, which boosts the bat-tery voltage up to +5V, thus maintaining a continuous supply to the uninterruptable +5V bus. Since the +5V output is always supplied through the MAX630, there are no power spikes or glitches during power transfer.The MAX630’s low-battery detector monitors the line-powered +5V, and the LBD output can be used to shut down unnecessary sections of the system during power failures. Alternatively, the low-battery detector could monitor the NiCad battery voltage and provide warning of power loss when the battery is nearly discharged.Unlike battery backup systems that use 9V batteries,this circuit does not need +12V or +15V to recharge the battery. Consequently, it can be used to provide +5V backup on modules or circuit cards that only have 5V available.9V Battery Life ExtenderFigure 7’s circuit provides a minimum of 7V until the 9V battery voltage falls to less than 2V. When the battery voltage is above 7V, the MAX630’s I C pin is low, putting it into the shutdown mode that draws only 10nA. When the battery voltage falls to 7V, the MAX8212 voltage detector’s output goes high, enabling the MAX630. The MAX630 then maintains the output voltage at 7V, even as the battery voltage falls below 7V. The LBD is used to decrease the oscillator frequency when the battery voltage falls to 3V, thereby increasing the output cur-rent capability of the circuit.CMOS Micropower Step-Up Switching Regulator 10______________________________________________________________________________________Figure 4. High-Power 3V to 5V Converter with ShutdownNote that this circuit (with or without the MAX8212) can be used to provide 5V from four alkaline cells. The initial volt-age is approximately 6V, and the output is maintained at 5V even when the battery voltage falls to less than 2V.Dual-Tracking RegulatorA MAX634 inverting regulator is combined with a MAX630 in F igure 8 to provide a dual-tracking ±15Voutput from a 9V battery. The reference for the -15V output is derived from the positive output through R3and R4. Both regulators are set to maximize output power at low-battery voltage by reducing the oscillator frequency, through LBR, when V BATT falls to 7.2V.MAX630/MAX4193Switching Regulator______________________________________________________________________________________11Figure 5. 3V to 5V Converter with Low-Battery Frequency ShiftFigure 7. Battery Life Extension Down to 3V InFigure 6. Uninterruptable +5V SupplyM A X 630/M A X 4193Switching Regulator 12______________________________________________________________________________________Table 2. Maxim DC-DC ConvertersFigure 8. ±12V Dual-Tracking RegulatorMAX630/MAX4193Switching Regulator______________________________________________________________________________________13Package InformationFor the latest package outline information, go to /packages .Chip TopographyLBR17I CV FB6230.089"(2.26mm)C XL XM A X 630/M A X 4193Switching Regulator Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.14____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©2008 Maxim Integrated Productsis a registered trademark of Maxim Integrated Products, Inc.Revision History。

MAX6033规格书,MAX6033AAUT50技术资料,MAX6033AAUT25,datasheet,PDF

General DescriptionThe MAX6033 ultra-high-precision series voltage refer-ence features a low 7ppm/°C (max) temperature coeffi-cient and a low dropout voltage (200mV, max). Low temperature drift and low noise make the MAX6033ideal for use with high-resolution ADCs or DACs.This device uses bandgap technology for low-noise per-formance and excellent accuracy. Laser-trimmed, high-stability, thin-film resistors, and postpackage trimming guarantee excellent initial accuracy (±0.04%, max). The MAX6033 consumes only 40µA of supply current and sources up to 15mA. Series mode references save sys-tem power and use minimal external components com-pared to two-terminal shunt references.The MAX6033 is available in the miniature 6-pin SOT23package and is offered over the automotive tempera-ture range (-40°C to +125°C).ApplicationsPrecision Regulators A/D and D/A Converters Power Supplies Hard-Disk DrivesHigh-Accuracy Industrial and Process Control Hand-Held InstrumentsFeatureso Tiny 6-Pin SOT23 Packageo Ultra-Low Temperature Drift: 7ppm/°C (max)o ±0.04% Initial Accuracy o Stable with Capacitive Loadso Low 16µV P-P Noise (0.1Hz to 10Hz) (2.5V Output)o 15mA Output Source Current o Low 200mV Dropout Voltage o Low 40µA Quiescent Current o Wide 2.7V to 12.6V Supply Voltage o Excellent Load Regulation: 0.001mV/mAMAX6033Ultra-High-Precision SOT23 SeriesVoltage Reference________________________________________________________________Maxim Integrated Products 1Selector GuidePin ConfigurationOrdering InformationTypical Operating Circuit19-2300; Rev 2; 6/03For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Note:Two-number part suffix indicates output voltage option.SOT23 Package Top Marks appear at end of data sheet.M A X 6033Ultra-High-Precision SOT23 Series Voltage ReferenceABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS —V OUT = 2.500V(V IN = 5V, C OUT = 0.1µF, I OUT = 0, T A = T MIN to T MAX , unless otherwise specified. Typical values are at T A = +25°C.) (Note 1)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.IN to GND...............................................................-0.3V to +13V OUTF, OUTS to GND................................................-0.3V to +6V Continuous Power Dissipation (T A = +70°C)6-Pin SOT23 (derate 9.1mW/°C above +70°C)............727mWOperating Temperature Range .........................-40°C to +125°C Storage Temperature Range.............................-65°C to +150°C Maximum Junction Temperature.....................................+150°C Lead Temperature (soldering, 10s).................................+300°CMAX6033Ultra-High-Precision SOT23 SeriesVoltage Reference_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS —V OUT = 3.000V(V IN = 5V, C OUT = 0.1µF, I OUT = 0, T A = T MIN to T MAX , unless otherwise specified. Typical values are at T A = +25°C.) (Note 1)ELECTRICAL CHARACTERISTICS —V OUT = 4.096VM A X 6033Ultra-High-Precision SOT23 Series Voltage ReferenceELECTRICAL CHARACTERISTICS —V OUT = 4.096V (continued)(V IN = 5V, C OUT = 0.1µF, I OUT = 0, T A = T MIN to T MAX , unless otherwise specified. Typical values are at T A = +25°C.) (Note 1)ELECTRICAL CHARACTERISTICS —V OUT = 5.000V(V = 5.5V, C = 0.1µF, I = 0, T = T to T , unless otherwise specified. Typical values are at T = +25°C.) (Note 1)MAX6033Ultra-High-Precision SOT23 SeriesVoltage Reference_______________________________________________________________________________________5ELECTRICAL CHARACTERISTICS —V OUT = 5.000V (continued)Typical Operating Characteristics(V IN = 5V, C OUT = 0.1µF, I OUT = 0, T A = +25°C, unless otherwise specified.) (Note 4)Note 2:Dropout Voltage is the minimum input voltage at which V OUT changes ≤0.1% from V OUT at V IN = 5V (V IN = 5.5V forV OUT = 5V).Note 3:Temperature Hysteresis is defined as the change in +25°C output voltage before and after cycling the devicefrom T MAX to T MIN .OUTPUT VOLTAGE vs.TEMPERATURE (V OUT = 2.5V)TEMPERATURE (°C)O U T P U T V OL T A G E (V )110956580-105203550-252.49822.49842.49862.49882.49902.49922.49942.49962.49982.50002.50022.50042.50062.50082.50102.4980-40125OUTPUT VOLTAGE vs.TEMPERATURE (V OUT = 5V)TEMPERATURE (°C)O U T P U T V O L T A G E (V )110956580-105203550-254.99824.99844.99864.99884.99904.99924.99944.99964.99985.00005.00025.00045.00065.00085.00104.9980-40125LOAD REGULATION (V OUT = 2.5V)OUTPUT CURRENT (mA)O U T P U T V O L T A G E (V )1816121424681002.49952.50002.50052.50102.50152.50202.50252.50302.50352.50402.4990-220M A X 6033Ultra-High-Precision SOT23 Series Voltage Reference 6_______________________________________________________________________________________Typical Operating Characteristics (continued)(V IN = 5V, C OUT = 0.1µF, I OUT = 0, T A = +25°C, unless otherwise specified.) (Note 4)LOAD REGULATION (V OUT = 5V)OUTPUT CURRENT (mA)O U T P U T V O L T A G E (V )1816024810126144.9995.0005.0015.0025.0035.0045.0055.0064.998-220DROPOUT VOLTAGE vs. OUTPUT CURRENT(V OUT = 2.5V)OUTPUT CURRENT (mA)D R O P O U T V O L T A GE (m V )181********6421002003004005006007000020DROPOUT VOLTAGE vs. OUTPUT CURRENT(V OUT = 5V)OUTPUT CURRENT (mA)D R O P O U T V O L T A GE (m V )18161214468102501001502002503003504004505005506000020POWER-SUPPLY REJECTION RATIO vs. FREQUENCY (V OUT = 2.5V)FREQUENCY (kHz)0.0011101000.010.11000P S R R (d B )0-100-90-80-70-60-50-40-10-20-30-100-70-80-90-60-50-40-30-20-1000.0010.10.011101001000POWER-SUPPLY REJECTION RATIO vs. FREQUENCY (V OUT = 5V)M A X 6033 t o c 08FREQUENCY (kHz)P S R R (d B )SUPPLY CURRENT vs. INPUT VOLTAGE(V OUT = 2.5V)INPUT VOLTAGE (V)S U P P L Y C U R R E N T (µA )121191034567812153045607590105120135150013SUPPLY CURRENT vs. INPUT VOLTAGE(V OUT = 5V)INPUT VOLTAGE (V)S U P P L Y C U R R E N T (µA )121191034567812204060801001201401601802002200130.1Hz TO 10Hz OUTPUT NOISE(V OUT = 2.5V)MAX6033 toc11V OUT 4µV/div 1s/div 0.1Hz TO 10Hz OUTPUT NOISE(V OUT = 5V)MAX6033 toc12V OUT 10µV/div1s/divMAX6033Ultra-High-Precision SOT23 SeriesVoltage Reference_______________________________________________________________________________________7LOAD TRANSIENT (V OUT = 2.5V)2.5V10mAI OUT10mA/divV OUT 50mV/div AC-COUPLED400µs/divV IN = 5V C OUT = 0.1µFLOAD TRANSIENT (V OUT = 2.5V)2.5V-100µA1mA 1ms/divI OUT 1mA/divV OUT 50mV/div AC-COUPLEDV IN = 5V C OUT = 0.1µFLOAD TRANSIENT (V OUT = 2.5V)MAX6033 toc152.5V10mAI OUT10mA/divV OUT 50mV/div AC-COUPLED400µs/divV IN = 5V C OUT = 10µFLOAD TRANSIENT (V OUT = 2.5V)MAX6033 toc162.5V-100µA1mAI OUT 1mA/divV OUT 20mV/div AC-COUPLED1ms/divV IN = 5V C OUT = 10µFLINE TRANSIENT (V OUT = 2.5V)MAX6033 toc175.5V2.5V4.5V VOUT 10mV/div AC-COUPLEDV IN500mV/div AC-COUPLED400µs/div C OUT = 0.1µFLINE TRANSIENT (VOUT = 5V)6.5V5V5.5VV OUT 10mV/div AC-COUPLEDV IN500mV/div AC-COUPLED1ms/divTypical Operating Characteristics (continued)(V IN = 5V, C OUT = 0.1µF, I OUT = 0, T A = +25°C, unless otherwise specified.) (Note 4)M A X 6033Ultra-High-Precision SOT23 Series Voltage Reference 8_______________________________________________________________________________________Typical Operating Characteristics (continued)(V IN = 5V, C OUT = 0.1µF, I OUT = 0, T A = +25°C, unless otherwise specified.) (Note 4)TURN-ON TRANSIENT (V OUT = 2.5V)5V2.5VV OUT 1V/divV IN 2V/div100µs/div0C OUT = 0.1µFTURN-ON TRANSIENT(V OUT = 5V)MAX6033 toc205.5V5VV OUT 2V/divV IN 2V/div400µs/divC OUT = 0.1µFTURN-ON TRANSIENT (V OUT = 2.5V)5V2.5VV OUT 1V/divV IN 2V/div2ms/divC OUT = 10µFTURN-ON TRANSIENT(V OUT = 5V)5.5V5VV OUT 2V/divV IN 2V/div2ms/divC OUT = 10µFNote 4:Many of the MAX6033 Typical Operating Characteristics are similar. The extremes of these characteristics are found in theMAX6033 (2.5V output) and the MAX6033 (5V output). The Typical Operating Characteristics of the remainder of the MAX6033 family typically lie between these two extremes and can be estimated based on their output voltages.LONG-TERM STABILITY vs. TIME(V OUT = 2.5V)TIME (HOURS)V O U T (V )9008006007002003004005001002.499952.500002.500052.500102.500152.500202.500252.500302.500352.500402.4999001000LONG-TERM STABILITY vs. TIME(V OUT= 5V)TIME (HOURS)V O U T (V )9008006007002003004005001005.00005.00015.00025.00035.00045.00055.00065.00075.00085.00094.999901000Applications InformationBypassing/Load CapacitanceFor the best line-transient performance, decouple the input with a 0.1µF ceramic capacitor as shown in the Typical Operating Circuit . Place the capacitor as close to I N as possible. When transient performance is less important, no capacitor is necessary.The MAX6033 family requires a minimum output capac-itance of 0.1µF for stability and is stable with capacitive loads (including the bypass capacitance) of up to 100µF. In applications where the load or the supply can experience step changes, a larger output capacitor reduces the amount of overshoot (undershoot) and improves the circuit ’s transient response. Place output capacitors as close to the device as possible.Supply CurrentThe quiescent supply current of the MAX6033 series reference is typically 40µA and is virtually independent of the supply voltage. In the MAX6033 family, the load current is drawn from the input only when required, so supply current is not wasted and efficiency is maxi-mized at all input voltages. This improved efficiency reduces power dissipation and extends battery life.When the supply voltage is below the minimum-speci-fied input voltage (as during turn-on), the devices can draw up to 150µA beyond the nominal supply current.The input voltage source must be capable of providing this current to ensure reliable turn-on.Output-Voltage HysteresisOutput voltage hysteresis is the change in the output voltage at T A = +25°C before and after the device is cycled over its entire operating temperature range.Hysteresis is caused by differential package stress appearing across the bandgap core transistors. The typical temperature hysteresis value is 150ppm.Turn-On TimeThese devices typically turn on and settle to within0.01% of their final value in >1µs. The turn-on time can increase up to 2ms with the device operating at the minimum dropout voltage and the maximum load.Precision Current SourceFigure 1 shows a typical circuit providing a precision current source. The OUTF output provides the bias cur-rent for the bipolar transistor. OUTS senses the voltage across the resistor and adjusts the current sourced by OUTF accordingly.High-Resolution DAC and Reference from Single SupplyFigure 2 shows a typical circuit providing both the power supply and reference for a high-resolution DAC.A MAX6033 with 2.5V output provides the reference voltage for the DAC.MAX6033Ultra-High-Precision SOT23 SeriesVoltage Reference_______________________________________________________________________________________9Figure 1. Precision Current SourceM A X 6033Ultra-High-Precision SOT23 Series Voltage Reference 10______________________________________________________________________________________Chip InformationTRANSISTOR COUNT: 656PROCESS: BiCMOSSOT23 Package Top MarksMAX6033Ultra-High-Precision SOT23 Series Voltage ReferenceMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embod ied in a Maxim prod uct. No circuit patent licenses areimplied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________11©2003 Maxim Integrated Products Printed USAis a registered trademark of Maxim Integrated Products.Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline informationgo to /packages .)美信代理商,MAXIM 代理,深圳市万瑞尔科技有限公司 +86-755-28269789 。

MAX3053资料

MAX3053±80V Fault-Protected, 2Mbps,Low Supply Current CAN TransceiverFor pricing delivery, and ordering information please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .General DescriptionThe MAX3053 interfaces between the control area net-work (CAN) protocol controller and the physical wires of the bus lines in a CAN. It is primarily intended for indus-trial systems requiring data rates up to 2Mbps and fea-tures ±80V fault protection against shorts to high-voltage power buses. The device provides differ-ential transmit capability to the bus and differentialreceive capability to the CAN controller.The MAX3053 has three different modes of operation:high-speed, slope control, and shutdown. High-speed mode allows data rates up to 2Mbps. In slope control mode, data rates are between 40kbps and 500kbps so the effects of EMI are reduced and unshielded twisted or parallel cable may be used. In shutdown mode, the transmitter is switched off, and the receiver is switched to a low-current mode.An autoshutdown function puts the device in 15µA shut-down mode when the bus or CAN controller is inactive for 47ms or greater.The MAX3053 is available in an 8-pin SO package and is specified for -40°C to +125°C operation.ApplicationsIndustrial Control and Networks PrintersAutomotive Systems HVAC Controls Telecom 72V SystemsFeatureso ±80V Fault Protectiono Three Operating ModesHigh-Speed Operation up to 2Mbps Slope Control Mode to Reduce EMI (40kbps to 500kbps)o 15µA Low-Current Shutdown Mode o Autoshutdown when Device Is Inactive o Automatic Wakeup from Shutdown o Thermal Shutdown o Current Limitingo Fully Compatible with the ISO 11898 StandardOrdering InformationTypical Operating Circuit19-2425; Rev 0; 4/02Pin Configuration appears at end of data sheet.M A X 3053±80V Fault-Protected, 2Mbps,Low Supply Current CAN Transceiver 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSDC ELECTRICAL CHARACTERISTICSStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.V CC to GND ............................................................-0.3V to +6V TXD, RS, RXD, SHDN to GND....................-0.3V to (V CC + 0.3V)RXD Shorted to GND.................................................Continuous CANH, CANL to GND...........................-80V to +80V Continuous Continuous Power Dissipation8-Pin SO (derate 5.9mW/°C above +70°C) .................470mWOperating Temperature RangesMAX3053ASA...............................................-40°C to +125°C MAX3053ESA .................................................-40°C to +85°C Junction Temperature......................................................+150°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s) ................................+300°CMAX3053±80V Fault-Protected, 2Mbps,Low Supply Current CAN Transceiver_______________________________________________________________________________________3DC ELECTRICAL CHARACTERISTICS (continued)(V CC = +5V ±10%, R L = 60Ω, RS = GND, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +5V and T A = +25°C.)M A X 3053±80V Fault-Protected, 2Mbps,Low Supply Current CAN Transceiver 4_______________________________________________________________________________________TIMING CHARACTERISTICS(V CC = +5V ±10%, R L = 60Ω, C L = 100pF , T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +5V andNote 1:As defined by ISO SHDN , bus value is one of two complementary logical values: dominant or recessive. The dominant valuerepresents the logical 1 and the recessive represents the logical 0. During the simultaneous transmission of the dominant and recessive bits, the resulting bus value is dominant. For MAX3053 values, see the truth table in the Transmitter and Receiver sections.Note 2:The ESD structures do not short out CANH and CANL under an ESD event while -7V < CANH, CANL < +12V.MAX3053±80V Fault-Protected, 2Mbps,Low Supply Current CAN Transceiver_______________________________________________________________________________________5Typical Operating Characteristics(V CC = +5V, R L = 60Ω, C L = 100pF, T A = +25°C, unless otherwise specified.)25201510502011065155200SLEW RATE vs. R RSR RS (k Ω)S L E W R A T E (V /µs )2010403050607080010015050200250300350400AUTOSHUTDOWN vs. C SHDNM A X 3053 t o c 02C SHDN (nF)S L E E P T I M E (m s )302826242220100050015002000SUPPLY CURRENT vs. DATA RATE50% DUTY CYCLEDATA RATE (kbps)S U P P L Y C U R R E N T (m A )403530252015-5020-155590125RECEIVER PROPAGATION DELAY vs.TEMPERATURE (RECESSIVE TO DOMINANT)M A X 3053 t o c 04TEMPERATURE (°C)R E C E I V E R P R O P A G A T I O N D E L A Y (n s )3530252015-4026-75992125DRIVER PROPAGATION DELAYvs. TEMPERATURE, R RS = GNDTEMPERATURE (°C)D R I VE R P R O P A G A T I O N D E L A Y (n s )16001200800400105152025RECEIVER OUTPUT LOW vs. OUTPUT CURRENTOUTPUT CURRENT (mA)V O L T A G E R X D (m V )3.02.41.81.20.600105152025RECEIVER OUTPUT HIGH vs. OUTPUT CURRENTOUTPUT CURRENT (mA)V O L T A G E R X D (V )543210010050150250200300DIFFERENTIAL VOLTAGE (CANH - CANL)vs. DIFFERENTIAL LOAD R LDIFFERENTIAL LOAD R L (Ω)D I F FE R E N T I A L V O L T A G E (V )RECEIVER PROPAGATION DELAY (DOMINANT TO RECESSIVE)MAX3053 toc0940ns/divDIFFERENTIAL INPUT2V/divM A X 3053±80V Fault-Protected, 2Mbps,Low Supply Current CAN Transceiver 6_______________________________________________________________________________________DRIVER PROPAGATION DELAYMAX3053 toc1040ns/divR RS = GND2V/divTXDCANH - CANLTypical Operating Characteristics (continued)(V CC = +5V, R L = 60Ω, C L = 100pF, T A = +25°C, unless otherwise specified.)DRIVER PROPAGATION DELAYMAX3053 toc11400ns/divTXD CANH - CANLR RS = 24k Ω5V/div1V/divR RS = 100k ΩR RS = 180k ΩPin DescriptionMAX3053±80V Fault-Protected, 2Mbps,Low Supply Current CAN Transceiver_______________________________________________________________________________________7Figure 1. AC Test CircuitFigure 2. Timing Diagram for Dynamic Characteristics Figure 3. Time to Wakeup (t wake )Test Circuits/Timing DiagramsM A X 3053±80V Fault-Protected, 2Mbps,Low Supply Current CAN Transceiver 8_______________________________________________________________________________________Detailed DescriptionThe MAX3053 interfaces between the protocol con-troller and the physical wires of a CAN bus. It is primari-ly intended for industrial applications requiring data rates up to 2Mbps and features ±80V fault protection against shorts in high-voltage systems. This fault pro-tection allows the device to withstand up to ±80V with respect to ground with no damage to the device. The built-in fault tolerance allows the device to survive in industrial and automotive environments with no external protection devices. The device provides differential transmit capability to the bus and differential receive capability to the CAN controller (Figure 4).The device has three modes of operations: high-speed,slope control, and shutdown. In high-speed mode, slew rates are not limited, making 2Mbps transmission speeds possible. Slew rates are controlled in slope control mode, minimizing EMI and allowing use of unshielded twisted or parallel cable. The device goes into low-power operation in shutdown mode.The transceiver is designed to operate from a single +5V supply, and draws 56mA of supply current in dom-inant state and 3.6mA in recessive state. In shutdown mode, supply current is reduced to 15µA.CANH and CANL are output short circuit current limited and are protected against excessive power dissipation by thermal-shutdown circuitry that places the driver outputs into a high-impedance state.Fault ProtectionThe MAX3053 features ±80V fault protection. This extended voltage range of CANH and CANL bus lines allows its use in high-voltage systems and communicat-ing to high-voltage buses. If data is transmitting at 2Mbps, the fault protection is reduced to ±70V.TransmitterThe transmitter converts a single-ended input (TXD)from the CAN controller to differential outputs for the bus lines (CANH, CANL). Table 1 is the truth table for the transmitter and receiver.High SpeedConnect RS to ground to set the MAX3053 to high-speed mode. When operating in high-speed mode, the MAX3053 can achieve transmission rates up to 2Mbps.Line drivers are switched on and off as quickly as pos-sible. However, in this mode, no measures are taken to limit the rise and fall slope of the data signal, allowing for potential EMI emissions. If using the MAX3053 in high-speed mode, use shielded twisted-pair cable to avoid EMI problems.Figure 4. Block DiagramMAX3053±80V Fault-Protected, 2Mbps,Low Supply Current CAN Transceiver_______________________________________________________________________________________9R RS (k Ω) = 12000 / speed (in kbps).See the Typical Operating Characteristics for the Slew Rate vs. R RS graph.ShutdownTo place the MAX3053 in shutdown, the SHDN pin should be driven to GND. In shutdown mode, the device is switched off. The outputs are high impedance to ±80V.ReceiverThe receiver takes differential input from the bus lines (CANH, CANL) and converts this data to a single-ended output (RXD) to the CAN controller. It consists of a comparator that senses the difference ∆V = (CANH -CANL) with respect to an internal threshold of 0.7V. If this difference is positive (i.e., ∆V > 0.9V), a logic low is present at the RXD pin. If negative (i.e., ∆V < 0.5V), a logic high is present.The receiver always echoes the transmitted data.The CANH and CANL common-mode range is from -7V to +12V. RXD is logic high when CANH and CANL are shorted or terminated and undriven.Thermal ShutdownIf the junction temperature exceeds +160°C, the device is switched off. The hysteresis is about 20°C, disabling thermal shutdown once the temperature declines to +140°C and the device is turned back on.To manage power consumption, autoshutdown puts the device into shutdown mode after the device has been inactive for a period of time. The value of an external capacitor (C SHDN ) connected to SHDN determines the threshold of inactivity time, after which the autoshutdown triggers (see Typical Operating Characteristics ).Use a 100nF capacitor as C SHDN for a typical threshold of 20ms. Change the capacitor value according to the following equation to change the threshold time period:autoshutdown.When the MAX3053 is in shutdown mode, only the wakeup comparator is active, and normal bus commu-nication is ignored. The remote master of the CAN sys-tem wakes up the MAX3053 with a signal greater than 9V on CANH. The local CAN controller wakes up the MAX3053 by driving SHDN high or TXD.Driver Output ProtectionThe MAX3053 has several features to protect itself from damage. Thermal shutdown switches off the device and puts CANH and CANL into high impedance if the junction temperature exceeds +160°C. Thermal protec-tion is needed particularly when a bus line is short cir-cuited. The hysteresis for the thermal shutdown is about 20°C.M A X 3053±80V Fault-Protected, 2Mbps,Low Supply Current CAN Transceiver 10______________________________________________________________________________________Additionally, a current-limiting circuit protects the trans-mitter output stage against a short circuit to positive and negative battery voltage. Although the power dissi-pation increases during this fault condition, this feature prevents destruction of the transmitter output stage.Applications InformationReduced EMI and ReflectionsIn slope control mode, the CANH, CANL outputs are slew-rate limited, minimizing EMI and reducing reflec-tions caused by improperly terminated cables. In gen-eral, a transmitter ’s rise time relates directly to thelength of an unterminated stub, which can be driven with only minor waveform reflections. The following equation expresses this relationship conservatively:Length = t RISE / (10 x 1.5ns/ft)where t RISE is the transmitter ’s rise time. See Figures 5,6, and 7 for typical waveforms at various data rates.The MAX3053 requires no special layout considerations beyond common practices. Bypass V CC to GND with a 1µF ceramic capacitor mounted close to the IC with short lead lengths and wide trace widths.400ns250kHz R RS = 24k ΩFigure 6. Output Bus in Slope Control Mode at 500kbps4.00µs31.5kHz R RS = 180k ΩFigure 5. Output Bus in Slope Control Mode at 62.5kbps 100ns1MHz R RS = 0ΩFigure 7. Output Bus High-Speed Mode at 2Mbps12348765RS CANH CANL SHDNRXDV CC GND TXD MAX3053SOTOP VIEWPin ConfigurationChip InformationTRANSISTOR COUNT: 1214PROCESS: BiCMOSMAX3053±80V Fault-Protected, 2Mbps,Low Supply Current CAN Transceiver Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________11©2002 Maxim Integrated Products Printed USAis a registered trademark of Maxim Integrated Products.Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)元器件交易网。

MAX306中文资料

_______________General DescriptionThe MAX306/MAX307 precision, monolithic, CMOS analog multiplexers (muxes) offer low on-resistance (less than 100Ω), which is matched to within 5Ωbetween channels and remains flat over the specified analog signal range (7Ωmax). They also offer low leak-age over temperature (I NO(OFF)less than 2.5nA at +85°C) and fast switching speeds (t TRANS less than 250ns). The MAX306 is a single-ended 1-of-16 device,and the MAX307 is a differential 2-of-8 device.The MAX306/MAX307 are fabricated with Maxim’s improved 44V silicon-gate process. Design improve-ments yield extremely low charge injection (less than 10pC) and guarantee electrostatic discharge (ESD)protection greater than 2000V.These muxes operate with a single +4.5V to +30V sup-ply, or bipolar ±4.5V to ±20V supplies, while retaining TTL/CMOS-logic input compatibility and fast switching.CMOS inputs provide reduced input loading. These improved parts are plug-in upgrades for the industry-standard DG406, DG407, DG506A, and DG507A.________________________ApplicationsSample-and-Hold Circuits Test Equipment Heads-Up DisplaysGuidance and Control Systems Military RadiosCommunications Systems Battery-Operated Systems PBX, PABXAudio Signal Routing____________________________Featureso Guaranteed On-Resistance Match Between Channels, <5ΩMaxo Low On-Resistance, <100ΩMaxo Guaranteed Flat On-Resistance over Specified Signal Range, 7ΩMaxo Guaranteed Charge Injection, <10pC o I NO(OFF)Leakage <2.5nA at +85°C o I COM(OFF)Leakage <20nA at +85°C o ESD Protection >2000Vo Plug-In Upgrade for Industry-Standard DG406/DG407/DG506A/DG507Ao Single-Supply Operation (+4.5V to +30V)Bipolar-Supply Operation (±4.5V to ±20V)o Low Power Consumption, <1.25mW o Rail-to-Rail Signal Handling o TTL/CMOS-Logic CompatibleMAX306/MAX307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers________________________________________________________________Maxim Integrated Products 1_____________________Pin Configurations/Functional Diagrams/Truth TablesCall toll free 1-800-998-8800 for free samples or literature.19-0270; Rev 0; 8/94Ordering Information continued at end of data sheet.* Contact factory for dice specifications.M A X 306/M A X 307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +15V, V- = -15V, GND = 0V, V AH = +2.4V, V AL = +0.8V, T A = T MIN to T MAX , unless otherwise noted.)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.Voltage Referenced to V-V+............................................................................-0.3V, 44V GND.........................................................................-0.3V, 25V Digital Inputs, NO, COM (Note 1)...........(V- - 2V) to (V+ + 2V) or30mA (whichever occurs first)Continuous Current (any terminal)......................................30mA Peak Current, NO or COM(pulsed at 1ms, 10% duty cycle max)..........................100mA Continuous Power Dissipation (T A = +70°C)Plastic DIP (derate 9.09mW/°C above +70°C)............727mW Wide SO (derate 12.50mW/°C above +70°C)............1000mW PLCC (derate 10.53mW/°C above +70°C)..................842mW CERDIP (derate 16.67mW/°C above +70°C).............1333mW Operating Temperature RangesMAX30_C_ _.......................................................0°C to +70°C MAX30_E_ _.....................................................-40°C to +85°C MAX30_MJI....................................................-55°C to +125°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10sec).............................+300°CNote 1:Signals on NO, COM, A0, A1, A2, A3, or EN exceeding V+ or V- are clamped by internal diodes. Limit forward current to maximum current ratings.MAX306/MAX307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)(V+ = +15V, V- = -15V, GND = 0V, V= +2.4V, V = +0.8V, T = T to T , unless otherwise noted.)M A X 306/M A X 307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers 4_______________________________________________________________________________________ELECTRICAL CHARACTERISTICS—Single Supply(V+ = +12V, V- = 0V, GND = 0V, V AH = +2.4V, V AL = +0.8V, T A = T MIN to T MAX , unless otherwise noted.)Note 2:The algebraic convention where the most negative value is a minimum and the most positive value a maximum is used inthis data sheet.Note 3:Guaranteed by design.Note 4:∆R ON = R ON(MAX)- R ON(MIN).On-resistance match between channels and flatness are guaranteed only with specifiedvoltages. Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured at the extremes of the specified analog signal range.Note 5:Leakage parameters are 100% tested at the maximum rated hot temperature and guaranteed by correlation at +25°C.Note 6:Off isolation = 20log V COM /V NO , where V COM = output and V NO = input to off switch.MAX306/MAX307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers_______________________________________________________________________________________5120140160ON-RESISTANCE vs. V COM(DUAL SUPPLIES)1000204060-2020-1515-1010-5580V COM (V)R O N (Ω)120ON-RESISTANCE vs. V COM AND TEMPERATURE (DUAL SUPPLIES)1000204060-1515-1010-55080V COM (V)R O N (Ω)280320360400ON-RESISTANCE vs. V COM (SINGLE SUPPLY)24040801201601520105200V COM (V)R O N (Ω)120140160ON-RESISTANCE vs. V COM AND TEMPERATURE (SINGLE SUPPLY)10002040601510580V COM (V)R O N (Ω)30CHARGE INJECTION vs. V COM20-30-20-100-1515-1010-55010V COM (V)Q j (p C )100.0001-55125OFF LEAKAGE vs. TEMPERATURE1TEMPERATURE (°C)O F F L E A K A G E (n A )250.010.001-35-15650.1100100045851055100.0001-55125ON LEAKAGE vs. TEMPERATURE1TEMPERATURE (°C)O N L E A K A G E (n A )250.010.001-35-15650.11001000458510551000.001-55125SUPPLY CURRENT vs. TEMPERATURE10TEMPERATURE (°C)I +, I - (µA )250.10.01-35-1565145851055__________________________________________Typical Operating Characteristics(T A = +25°C, unless otherwise noted.)__________Applications InformationOperation with Supply VoltagesOther than ±15VUsing supply voltages other than ±15V will reduce the analog signal range. The MAX306/MAX307 switches operate with ±4.5V to ±20V bipolar supplies or with a +4.5V to +30V single supply; connect V- to GND when operating with a single supply. Also, both device types can operate with unbalanced supplies such as +24V and -5V. The Typical Operating Characteristics graphs show typical on-resistance with 20V, 15V, 10V, and 5V supplies. (Switching times increase by a factor of two or more for operation at 5V.)Overvoltage ProtectionProper power-supply sequencing is recommended for all CMOS devices. Do not exceed the absolute maxi-mum ratings because stresses beyond the listed rat-ings may cause permanent damage to the devices.Always sequence V+ on first, then V-, followed by either the logic inputs, NO, or COM. If power-supply sequencing is not possible, add two small signal diodes in series with supply pins for overvoltage pro-tection (Figure 1). Adding diodes reduces the analogsignal range to 1V above V+ and 1V below V-, but low switch resistance and low leakage characteristics are unaffected. Device operation is unchanged, and the difference between V+ and V- should not exceed +44V.M A X 306/M A X 307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers 6_______________________________________________________________________________________Output–bidirectionalCOM28Address Inputs A3–A014–17Enable InputsEN 18Analog Inputs–bidirectional NO1–NO819–26Negative Supply Voltage Input V-27Ground GND 12Analog Inputs–bidirectional NO16–NO94–11MAX306PINNo Internal Connections N.C.2, 3, 13Positive Supply Voltage Input V+1FUNCTIONNAME_____________________________________________________________Pin DescriptionsDiodesMAX306/MAX307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers_______________________________________________________________________________________7______________________________________________Test Circuits/Timing DiagramsM A X 306/M A X 307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers 8________________________________________________________________________________________________________________________Test Circuits/Timing Diagrams (continued)Figure 5. Charge InjectionMAX306/MAX307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers_______________________________________________________________________________________9_________________________________Test Circuits/Timing Diagrams (continued)Figure 8. NO/COM CapacitanceM A X 306/M A X 307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers 10______________________________________________________________________________________________Pin Configurations/Functional Diagrams/Truth Tables (continued)A2A1A0EN ON Switch X 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1X 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1X 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 10 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1None 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16MAX306LOGIC “0” V AL ≤ 0.8V, LOGIC “1” = V AH ≥ 2.4VA3X 0 0 0 0 0 0 0 0 1 1 1 1 1 1 11A2A1A0EN ON Switch X 0 0 0 0 1 1 1 1X 0 0 1 1 0 0 1 1X 0 1 0 1 0 1 0 10 1 1 1 1 1 1 1 1None 1 2 3 4 5 6 7 8MAX307LOGIC “0” V AL ≤ 0.8V, LOGIC “1” = V AH ≥ 2.4VMAX306/MAX307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers______________________________________________________________________________________11________Pin Configurations/Functional Diagrams/Truth Tables (continued)_Ordering Information (continued)* Contact factory for dice specifications.Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.12__________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600©1994 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.M A X 306/M A X 307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers __________________________________________________________Chip TopographiesGNDNO1 NO2 NO3 N04 NO5 NO6 NO7 NO80.184" (4.67mm)0.078" (1.98mm)NO9NO10NO11NO12N013NO14NO15NO16N.C.V-COM V+GND NO1A NO2A NO3A N04A NO5A NO6A NO7A NO8A0.184" (4.67mm)0.078" (1.98mm)NO1B NO2B NO3B NO4B N05B NO6B NO7B NO8B COMBV-COMA V+TRANSISTOR COUNT: 269SUBSTRATE IS INTERNALLY CONNECTED TO V+TRANSISTOR COUNT: 269SUBSTRATE IS INTERNALLY CONNECTED TO V+MAX306MAX307N.C. = NO INTERNAL CONNECTION。

MAX1633CAI资料

MAX1630–MAX1635
_______________Ordering Information
PART MAX1630CAI MAX1630EAI TEMP. RANGE 0°C to +70°C -40°C to +85°C PIN-PACKAGE 28 SSOP 28 SSOP
Ordering Information continued on last page.
+3.3V
3.3V SMPS
5V SMPS
+5V
Pin Configurations and Selector Guide appear at end of data sheet.
ON/OFF
Idle Mode and Dual Mode are trademarks of Maxim Integrated Products.
________________General Description
The MAX1630–MAX1635 are buck-topology, step-down, switch-mode, power-supply controllers that generate logic-supply voltages in battery-powered systems. These high-performance, dual/triple-output devices include onboard power-up sequencing, power-good signaling with delay, digital soft-start, secondary winding control, lowdropout circuitry, internal frequency-compensation networks, and automatic bootstrapping. Up to 96% efficiency is achieved through synchronous rectification and Maxim’s proprietary Idle Mode™ control scheme. Efficiency is greater than 80% over a 1000:1 load-current range, which extends battery life in systemsuspend or standby mode. Excellent dynamic response corrects output load transients caused by the latest dynamic-clock CPUs within five 300kHz clock cycles. Strong 1A on-board gate drivers ensure fast external N-channel MOSFET switching. These devices feature a logic-controlled and synchronizable, fixed-frequency, pulse-width-modulation (PWM) operating mode. This reduces noise and RF interference in sensitive mobile communications and pen-entry applications. Asserting the SKIP pin enables fixed-frequency mode, for lowest noise under all load conditions. The MAX1630–MAX1635 include two PWM regulators, adjustable from 2.5V to 5.5V with fixed 5.0V and 3.3V modes. All these devices include secondary feedback regulation, and the MAX1630/MAX1632/MAX1633/ MAX1635 each contain 12V/120mA linear regulators. The MAX1631/MAX1634 include a secondary feedback input (SECFB), plus a control pin (STEER) that selects which PWM (3.3V or 5V) receives the secondary feedback signal. SECFB provides a method for adjusting the secondary winding voltage regulation point with an external resistor divider, and is intended to aid in creating auxiliary voltages other than fixed 12V. The MAX1630/MAX1631/MAX1632 contain internal output overvoltage and undervoltage protection features.

MAX1963AETT中文资料

General DescriptionThe MAX1963A/MAX1976A low-dropout linear regula-tors operate from a +1.62V to +3.6V supply and deliver a guaranteed 300mA continuous load current with a low 100mV dropout. The high-accuracy (±0.5%) output voltage is preset to an internally trimmed voltage in the +0.75V to +3.0V range. An active-low, open-drain reset output remains asserted for at least 2.2ms (MAX1963A)or 70ms (MAX1976A) after the output voltage reaches regulation. These devices are offered in thin SOT23 and thin DF N packages. An internal pMOS pass transistor allows the low supply current to remain independent of load and dropout voltage, making these devices ideal for portable battery-powered equipment.ApplicationsNotebook/Handheld Computers Cellular/Smart/PDA Phones DSC, CD/MP3 Players PCMCIA CardsFeatures♦Low 1.62V Minimum Input Voltage ♦Guaranteed 300mA Output Current ♦±2.5% Accuracy Over Load/Line/Temp ♦Low 100mV Dropout at 300mA Load ♦2.2ms (MAX1963A) or 70ms (MAX1976A) RESET Output Flag ♦Supply Current Independent of Load and Dropout Voltage ♦Logic-Controlled Shutdown♦Thermal-Overload and Short-Circuit Protection ♦Preset Output Voltages (0.75V to 3.0V)♦Tiny 6-Pin Thin SOT23 Package (<1.1mm High)♦TDFN Package (<0.8mm High)MAX1963A/MAX1976ALow-Input-Voltage, 300mA LDO Regulatorswith RESET in SOT and TDFN________________________________________________________________Maxim Integrated Products1Ordering Information19-3684; Rev 0; 5/05For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Pin Configurations*Insert the desired three-digit suffix (see the Selector Guide) into the blanks to complete the part number. Contact the factory for other output voltages.Selector Guide appears at end of data sheet.Typical Operating CircuitM A X 1963A /M A X 1976ALow-Input-Voltage, 300mA LDO Regulators with RESET in SOT and TDFN 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICSStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.IN, SHDN , RESET to GND.....................................-0.3V to +4.0V OUT to GND ................................................-0.3V to (V IN + 0.3V)Output Short-Circuit Duration.....................................Continuous Continuous Power Dissipation (T A = +70°C)6-Pin SOT23 (derate 9.1mW/°C above +70°C)............727mW 6-Pin TDFN (derate 24.4mW/°C above +70°C).........1951mW 8-Pin TDFN (derate 11.9mW/°C above +70°C)........953.5mWOperating Temperature Range ...........................-40°C to +85°C Junction Temperature.....................................................+150°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°CMAX1963A/MAX1976ALow-Input-Voltage, 300mA LDO Regulatorswith RESET in SOT and TDFN_______________________________________________________________________________________3Note 2:The dropout voltage is defined as V IN - V OUT , when V OUT is 4% lower than the value of V OUT when V IN = V OUT + 0.5V.Typical Operating Characteristics(V IN = (V OUT + 0.5V) or 1.8V, whichever is greater; SHDN = IN, C IN = 1µF, C OUT = 4.7µF, T A = +25°C, unless otherwise noted.)OUTPUT VOLTAGE ACCURACYvs. LOAD CURRENTLOAD CURRENT (mA)O U T P U T V O L T A G E A C C U R A C Y (%)25020015010050-0.10.10.2-0.2300OUTPUT VOLTAGE ACCURACYvs. INPUT VOLTAGEINPUT VOLTAGE (V)O U T P U T V O L T A G E A C C U R A C Y (%)3.02.62.21.8-0.250.250.50-0.501.43.4OUTPUT VOLTAGE ACCURACYvs. TEMPERATURETEMPERATURE (°C)O U T P U T V O L T A G E A C C U R A C Y (%)603510-15-1.0-0.500.51.01.5-1.5-4085ELECTRICAL CHARACTERISTICS (continued)(V IN = (V OUT + 0.5V) or 1.8V, whichever is greater; SHDN = IN, C IN = 1µF, C OUT = 4.7µF, T A = -40°C to +85°C, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)M A X 1963A /M A X 1976ALow-Input-Voltage, 300mA LDO Regulators with RESET in SOT and TDFN 4_______________________________________________________________________________________GROUND-PIN CURRENT vs. LOAD CURRENTLOAD CURRENT (mA)G R O U N D -P I N C U R R E N T (µA )1001100.1708090100110120600.011000GROUND-PIN CURRENT vs. INPUT VOLTAGEINPUT VOLTAGE (V)G R O U N D -P I N C U RR E N T (µA )3.22.82.42.01.62040608010012001.23.6GROUND-PIN CURRENT vs. TEMPERATURETEMPERATURE (°C)G R O U N D -P I N C U R R E N T (µA )604020-206070809010011012050-4080DROPOUT VOLTAGE vs. LOAD CURRENTLOAD CURRENT (mA)V D R O P O U T (m V )250200150100504020608010012000300POWER-SUPPLY REJECTION RATIOvs. FREQUENCYFREQUENCY (kHz)P S R R (d B )10010110203040506070800.11000LINE-TRANSIENT RESPONSEMAX1963/76 toc0940µs/divV IN 500mV/div1.5V 10mV/div AC-COUPLEDV OUT3.5VTypical Operating Characteristics (continued)(V IN = (V OUT + 0.5V) or 1.8V, whichever is greater; SHDN = IN, C IN = 1µF, C OUT = 4.7µF, T A = +25°C, unless otherwise noted.)LINE-TRANSIENT RESPONSENEAR DROPOUTMAX1963/76 toc1040µs/divV IN 500mV/div1.5V 10mV/div AC-COUPLEDV OUT1.8VMAX1963A/MAX1976ALow-Input-Voltage, 300mA LDO Regulatorswith RESET in SOT and TDFN_______________________________________________________________________________________5LOAD-TRANSIENT RESPONSEMAX1963/76 toc1120µs/div200mA/div20mV/divAC-COUPLED200mA V OUTI OUT 20mAV IN = 3.6V V OUT = 1.5VLOAD-TRANSIENT RESPONSENEAR DROPOUTMAX1963/76 toc1220µs/div200mA/div20mV/div AC-COUPLED200mA V OUTV IN = 1.8V V OUT = 1.5VI OUT 20mATypical Operating Characteristics (continued)(V IN = (V OUT + 0.5V) or 1.8V, whichever is greater; SHDN = IN, C IN = 1µF, C OUT = 4.7µF, T A = +25°C, unless otherwise noted.)SHUTDOWN RESPONSEMAX1963/76 toc13100µs/div 1V/div500mV/divV OUTV SHDNMAX1963/76 toc1440ms/div1V/div1V/div1V/divV OUT000V SHDNV RESETMAX1976ASHUTDOWN/RESET RESPONSEMAX1963/76 toc15200ms/div2V/div1V/div1V/divV OUTV IN000V MAX1976ALINE/RESET RESPONSEM A X 1963A /M A X 1976ALow-Input-Voltage, 300mA LDO Regulators with RESET in SOT and TDFN 6_______________________________________________________________________________________Pin DescriptionDetailed Description The MAX1963A/MAX1976A are low-dropout, high-accu-racy, low-quiescent-current linear regulators designed primarily for battery-powered applications. These devices supply loads up to 300mA and are available with preset output voltages from +0.75V to +3.0V. As illustrated in F igure 1, the MAX1963A/MAX1976A consist of a refer-ence, an error amplifier, a p-channel pass transistor, an internal feedback voltage-divider, and a power-good comparator.The reference is connected to the error amplifier, which compares this reference with the feedback voltage and amplifies the difference. If the feedback voltage is lower than the reference voltage, the pass-transistor gate is pulled lower, which allows more current to pass to the output and increases the output voltage. If the feedback voltage is too high, the pass-transistor gate is pulled up, allowing less current to pass to the output.Internal p-Channel Pass Transistor The MAX1963A/MAX1976A feature a 0.33Ω(R DS(ON)) p-channel MOSF ET pass transistor. Unlike similar designs using pnp pass transistors, p-channel MOSFETs require no base drive, which reduces quies-cent current. The pnp-based regulators also waste con-siderable current in dropout when the pass transistor saturates and use high base-drive currents under large loads. The MAX1963A/MAX1976A do not suffer from these problems and consume only 90µA (typ) of quies-cent current under heavy loads, as well as in dropout.Shutdown Pull SHDN low to enter shutdown. During shutdown, the output is disconnected from the input, an internal 1.5kΩresistor pulls OUT to GND, RESET is actively pulled low, and the supply current drops below 1µA.RESET Output The MAX1963A/MAX1976A microprocessor (µP) supervi-sory circuitry asserts a guaranteed logic-low reset during power-up, power-down, and brownout conditions down to +1V. RESET asserts when V OUT is below the reset threshold and remains asserted for at least t RP after V OUT rises above the reset threshold of regulation.Current Limit The MAX1963A/MAX1976A monitor and control the pass transistor’s gate voltage, limiting the output current to 450mA (min). If the output exceeds I LIM, the MAX1963A/ MAX1976A output voltage drops.Thermal-Overload Protection Thermal-overload protection limits total power dissipa-tion in the MAX1963A/MAX1976A. When the junction temperature exceeds T J= +165°C, a thermal sensorturns off the pass transistor, allowing the IC to cool. The thermal sensor turns the pass transistor on again afterthe junction temperature cools by 15°C, resulting in a pulsed output during continuous thermal-overload con-ditions. Thermal-overload protection safeguards theMAX1963A/MAX1976A in the event of fault conditions.F or continuous operation, do not exceed the absolute maximum junction-temperature rating of T J= +150°C.Operating Region and Power DissipationThe MAX1963A/MAX1976A maximum power dissipa-tion depends on the thermal resistance of the IC pack-age and circuit board, the temperature difference between the die junction and ambient air, and the rateof airflow. The power dissipated in the device is P =I OUT✕(V IN- V OUT). The maximum allowed power dissi-pation is:P MAX= (T J(MAX)- T A) / (θJC+ θCA)where (T J(MAX)- T A) is the temperature difference between the MAX1963A/MAX1976A die junction andthe surrounding air, θJC is the thermal resistance of the junction to the case, and θCA is the thermal resistancefrom the case through the PC board, copper traces,and other materials to the surrounding air. F or best heatsinking, expand the copper connected to the exposed paddle or GND.The MAX1963A/MAX1976A deliver up to 300mA and operate with an input voltage up to +3.6V. However,when using the 6-pin SOT23 version, high output cur-rents can only be sustained when the input-output dif-ferential voltage is less than 2V, as shown in Figure 2.The maximum allowed power dissipation for the 6-pinTDFN is 1.951W at T A= +70°C. Figure 3 shows that the maximum input-output differential voltage is not limitedby the TDFN package power rating.Applications InformationCapacitor Selection andRegulator Stability Capacitors are required at the MAX1963A/MAX1976Ainput and output for stable operation over the full tem-perature range and with load currents up to 300mA. Connect a 1µF ceramic capacitor between IN and GNDand a 4.7µF low-ESR ceramic capacitor between OUTand GND. The input capacitor (C IN) lowers the source impedance of the input supply. Use larger output capacitors to reduce noise and improve load-transient response, stability, and power-supply rejection.The output capacitor’s equivalent series resistance (ESR) affects stability and output noise. Use outputMAX1963A/MAX1976ALow-Input-Voltage, 300mA LDO Regulatorswith RESET in SOT and TDFN _______________________________________________________________________________________7M A X 1963A /M A X 1976Acapacitors with an ESR of 30m Ωor less to ensure sta-bility and optimize transient response. Surface-mount ceramic capacitors have very low ESR and are com-monly available in values up to 10µF. Connect C IN and C OUT as close to the MAX1963A/MAX1976A as possi-ble to minimize the impact of PC board trace induc-tance.Noise, PSRR, and Transient ResponseThe MAX1963A/MAX1976A are designed to operate with low dropout voltages and low quiescent currents in battery-powered systems while still maintaining good noise, transient response, and AC rejection. See the T ypical Operating Characteristics for a plot of Power-Supply Rejection Ratio (PSRR) versus F requency.When operating from noisy sources, improved supply-noise rejection and transient response can be achieved by increasing the values of the input and output bypass capacitors and through passive filtering techniques.The MAX1963A/MAX1976A load-transient response (see the T ypical Operating Characteristics ) shows two components of the output response: a near-zero DC shift from the output impedance due to the load-current change, and the transient response. A typical transient response for a step change in the load current from 20mA to 200mA is 20mV. Increasing the output capacitor’s value and decreasing the ESR attenuates the overshoot.Input-Output (Dropout) VoltageA regulator’s minimum input-output voltage difference (dropout voltage) determines the lowest usable supply voltage. In battery-powered systems, this determines the useful end-of-life battery voltage. Because the MAX1963A/MAX1976A use a p-channel MOSF ET pass transistor, the dropout voltage is a function of drain-to-source on-resistance (R DS(ON) = 0.33Ω) multiplied by the load current (see the T ypical Operating Characteristics ).V DROPOUT = V IN - V OUT = 0.33Ω✕I OUTThe MAX1963A/MAX1976A ground current reduces to 70µA in dropout.Low-Input-Voltage, 300mA LDO Regulators with RESET in SOT and TDFN 8_______________________________________________________________________________________MAX1963A/MAX1976ALow-Input-Voltage, 300mA LDO Regulatorswith RESET in SOT and TDFN_______________________________________________________________________________________9Chip InformationTRANSISTOR COUNT: 2556PROCESS: BiCMOSMinimum order quantity is 15,000 units.M A X 1963A /M A X 1976ALow-Input-Voltage, 300mA LDO Regulators with RESET in SOT and TDFN 10______________________________________________________________________________________Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)MAX1963A/MAX1976Awith RESET in SOT and TDFN______________________________________________________________________________________11Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages.)M A X 1963A /M A X 1976Awith RESET in SOT and TDFN 12______________________________________________________________________________________Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)MAX1963A/MAX1976Awith RESET in SOT and TDFN______________________________________________________________________________________13Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)M A X 1963A /M A X 1976Awith RESET in SOT and TDFN 14______________________________________________________________________________________MAX1963A/MAX1976Awith RESET in SOT and TDFNMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________15©2005 Maxim Integrated Products Printed USAis a registered trademark of Maxim Integrated Products, Inc. Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to /packages.)。

MAX8533_cn

___________________________________概述MAX8533是一款单端口、12V、InfiniBand ®兼容(IB) 的通用热插拔控制器。

该器件可应用于IB I类(非隔离型)和IB II类(隔离型) 电源拓扑应用。

此外，MAX8533能够在12V 总线供电的可热插拔刀片式服务器、RAID卡和网络交换机或路由器中充当可靠的电源控制器。

MAX8533内部集成有多种功能，允许电路板可靠地插入和拔出，同时还可实时监视异常事件。

开启输入电压时，MAX8533实现可调的软启动斜率，并提供过流保护。

该器件可在一段用户设定的时间内提供精确、稳定的电流调节输出，用于在过流情况(OC) 下完成闭锁和软启动。

此外，MAX8533还提供了第二级严重过流(SOC) 保护功能，在100ns内能够对短路故障做出响应。

MAX8533还具有可调的过压保护功能。

MAX8533具有欠压锁定(UVLO)功能，以及可连接至DC-DC转换器的电源就绪信号(POK)，以确认工作时电源输出电压的状态。

两个使能输入引脚EN (逻辑使能)和LPEN (本地电源使能) 提供灵活的上电顺序。

MAX8533可工作在扩展级温度范围，能在电路板拔出时承受最高额定值为16V的电感感生电压。

MAX8533采用节省空间的10引脚µMAX封装。

___________________________________应用12V热插拔InfiniBand电路供电热插拔/插头/坞站电源管理刀片式服务器RAID网络路由器和交换机___________________________________特性♦12V热插拔控制器，用于25W或50W InfiniBand端口♦可编程过流保护电流调节输出♦EN和LPEN输入引脚可实现灵活的上电顺序♦电源就绪信号♦可承受最高16V的电感感生电压♦开启过程中提供软启动过流保护♦定时的电流调节周期(可调)♦输出完全短路时100ns IC响应时间♦可调过压保护♦欠压锁定♦可调启动斜率MAX8533尺寸最小、高可靠性、12V、InfiniBand兼容的热插拔控制器________________________________________________________________Maxim Integrated Products 119-2849; Rev 0; 4/03本文是Maxim正式英文资料的译文，Maxim不对翻译中存在的差异或由此产生的错误负责。

MAX6323-MAX6324中文资料

Input Current, VCC, WDI, MR ..............................................20mA Output Current, RESET, WDPO ..........................................20mA Rate of Rise, VCC ............................................................100V/µs
SUFFIX
FAST
MAX
UNITS
SLOW
MIN
UNITS
A
1.5
ms
10
B
15
ms
100
ms
C
15
ms
300
D
15
ms
10
s
E
15
ms
60
F
23
ms
47
ms
G
39
ms
82
H
719
ms
1.3
s
*See Figure 1 for operation.
________________________________________________________________ Maxim Integrated Products 1
Medical
Embedded Control Systems
Features
♦ Min/Max (Windowed) Watchdog, 8 Factory-Trimmed Timing Options
♦ Pulsed Open-Drain, Active-Low Watchdog Output ♦ Power-On Reset ♦ Precision Monitoring of +2.5V, +3.0V, +3.3V,

MAX6373中文资料

General DescriptionThe MAX6369–MAX6374 are pin-selectable watchdog timers that supervise microprocessor (µP) activity and signal when a system is operating improperly. During normal operation, the microprocessor should repeated-ly toggle the watchdog input (WDI) before the selected watchdog timeout period elapses to demonstrate that the system is processing code properly. If the µP does not provide a valid watchdog input transition before the timeout period expires, the supervisor asserts a watch-dog (WDO ) output to signal that the system is not exe-cuting the desired instructions within the expected time frame. The watchdog output pulse can be used to reset the µP or interrupt the system to warn of processing errors.The MAX6369–MAX6374 are flexible watchdog timer supervisors that can increase system reliability through notification of code execution errors. The family offers several pin-selectable watchdog timing options to match a wide range of system timing applications:•Watchdog startup delay: provides an initial delay before the watchdog timer is started.•Watchdog timeout period: normal operating watch-dog timeout period after the initial startup delay.•Watchdog output/timing options: open drain (100ms)or push-pull (1ms).The MAX6369–MAX6374 operate over a +2.5V to +5.5V supply range and are available in miniature 8-pin SOT23 packages.________________________ApplicationsEmbedded Control Systems Industrial ControllersCritical µP and Microcontroller (µC) Monitoring AutomotiveTelecommunications NetworkingFeatureso Precision Watchdog Timer for Critical µP Applications o Pin-Selectable Watchdog Timeout Periods o Pin-Selectable Watchdog Startup Delay Periods o Ability to Change Watchdog Timing Characteristics Without Power Cycling o Open-Drain or Push-Pull Pulsed Active-Low Watchdog Output o Watchdog Timer Disable Feature o +2.5V to +5.5V Operating Voltage o 8µA Low Supply Currento No External Components Required o Miniature 8-Pin SOT23 PackageMAX6369–MAX6374Pin-Selectable Watchdog Timers19-1676; Rev 2; 2/03Ordering InformationPin Configuration appears at end of data sheet.Note:All devices are available in tape-and-reel only. Required order increment is 2,500 pieces.Selector GuideFor pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at1-888-629-4642, or visit Maxim’s website at .M A X 6369–M A X 6374Pin-Selectable Watchdog Timers 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V= +2.5V to +5.5V, SET_ = V or GND, T = -40°C to +85°C, unless otherwise noted. Typical values are at T = +25°C and Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.Terminal Voltage (with respect to GND)V CC .....................................................................-0.3V to +6V WDI.....................................................................-0.3V to +6V WDO (Open Drain: MAX6369/71/73).................-0.3V to +6V WDO (Push-Pull: MAX6370/72/74 .......-0.3V to (V CC + 0.3V)SET0, SET1, SET2................................-0.3V to (V CC + 0.3V)Maximum Current, Any Pin (input/output)...........................20mAContinuous Power Dissipation (T A = +70°C)SOT23-8 (derate 8.75mW/°C above +70°C)...............700mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range.............................-65°C to +150°C Junction Temperature......................................................+150°C Lead Temperature (soldering, 10s).................................+300°C V CC Rise or Fall Rate......................................................0.05V/µsMAX6369–MAX6374Pin-Selectable Watchdog Timers_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS (continued)M A X 6369–M A X 6374Pin-Selectable Watchdog Timers 4_______________________________________________________________________________________461081214-4010-15356085SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (µA )Typical Operating Characteristics(Circuit of Figure 1, T A = +25°C, unless otherwise noted .)0.9970.9990.9981.0011.0001.0021.003-4010-15356085WATCHDOG TIMEOUT PERIODvs. TEMPERATUREM A X 6369/74-02TEMPERATURE (°C)N O R M A L I Z E D W A T C H D O G T I M E O U T P E R I O DELECTRICAL CHARACTERISTICS (continued)Note 2:Guaranteed by design.Note 3:In this setting the watchdog timer is inactive and startup delay ends when WDI sees its first level transition. See SelectingDevice Timing for more information.Note 4:After power-up, or a setting change, there is an internal setup time during which WDI is ignored.MAX6369–MAX6374Pin-Selectable Watchdog Timers_______________________________________________________________________________________5Pin DescriptionDetailed DescriptionThe MAX6369–MAX6374 are flexible watchdog circuits for monitoring µP activity. During normal operation, the internal timer is cleared each time the µP toggles the WDI with a valid logic transition (low to high or high to low) within the selected timeout period (t WD ). The WDO remains high as long as the input is strobed within the selected timeout period. If the input is not strobed before the timeout period expires, the watchdog output is asserted low for the watchdog output pulse width (t WDO ). The device type and the state of the three logic control pins (SET0, SET1, and SET2) determine watch-dog timing characteristics. The three basic timing varia-tions for the watchdog startup delay and the normalTable 1 for the timeout characteristics for all devices in the family):•Watchdog Startup Delay:Provides an initial delay before the watchdog timer is started.Allows time for the µP system to power up and initial-ize before assuming responsibility for normal watch-dog timer updates.Includes several fixed or pin-selectable startup delay options from 200µs to 60s, and an option to wait for the first watchdog input transition before starting the watchdog timer.M A X 6369–M A X 6374Pin-Selectable Watchdog Timers 6_______________________________________________________________________________________•Watchdog Timeout Period:Normal operating watchdog timeout period after the initial startup delay.A watchdog output pulse is asserted if a valid watch-dog input transition is not received before the timeout period elapses.Eight pin-selectable timeout period options for each device, from 30µs to 60s.Pin-selectable watchdog timer disable feature.•Watchdog Output/Timing Options:Open drain, active low with 100ms minimum watch-dog output pulse (MAX6369/MAX6371/MAX6373).Push-pull, active low with 1ms minimum watchdog output pulse (MAX6370/MAX6372/MAX6374).Each device has a watchdog startup delay that is initi-ated when the supervisor is first powered or after the user modifies any of the logic control set inputs. The watchdog timer does not begin to count down until theFigure 1. Functional Diagramcompletion of the startup delay period, and no watch-dog output pulses are asserted during the startup delay. When the startup delay expires, the watchdog begins counting its normal watchdog timeout period and waiting for WDI transitions. The startup delay allows time for the µP system to power up and fully ini-tialize before assuming responsibility for the normal watchdog timer updates. Startup delay periods vary between the different devices and may be altered by the logic control set pins. To ensure that the system generates no undesired watchdog outputs, the routine watchdog input transitions should begin before the selected minimum startup delay period has expired. The normal watchdog timeout period countdown is initi-ated when the startup delay is complete. If a valid logic transition is not recognized at WDI before the watchdog timeout period has expired, the supervisor asserts a watchdog output. Watchdog timeout periods vary between the different devices and may be altered by the logic control set pins. To ensure that the system generates no undesired watchdog outputs, the watch-dog input transitions should occur before the selected minimum watchdog timeout period has expired.The startup delay and the watchdog timeout period are determined by the states of the SET0, SET1, and SET2 pins, and by the particular device within the family. For the MAX6369 and MAX6370, the startup delay is equal to the watchdog timeout period. The startup and watchdog timeout periods are pin selectable from 1ms to 60s (minimum).For the MAX6371 and MAX6372, the startup delay is fixed at 60s and the watchdog timeout period is pin selectable from 1ms to 60s (minimum).The MAX6373/MAX6374 provide two timing variations for the startup delay and normal watchdog timeout. Five of the pin-selectable modes provide startup delays from 200µs to 60s minimum, and watchdog timeout delays from 3ms to 10s minimum. Two of the selectable modes do not initiate the watchdog timer until the device receives its first valid watchdog input transition (there is no fixed period by which the first input must be received). These two extended startup delay modesare useful for applications requiring more than 60s for system initialization.All the MAX6369–MAX6374 devices may be disabledwith the proper logic control pin setting (Table 1).Applications InformationInput Signal Considerations Watchdog timing is measured from the last WDI risingor falling edge associated with a pulse of at least 100nsin width. WDI transitions are ignored when WDO is asserted, and during the startup delay period (Figure2). Watchdog input transitions are also ignored for asetup period, t SETUP, of up to 300µs after power-up ora setting change (Figure 3).Selecting Device TimingSET2, SET1, and SET0 program the startup delay and watchdog timeout periods (Table 1). Timeout settingscan be hard wired, or they can be controlled with logicgates and modified during operation. To ensure smooth transitions, the system should strobe WDI immediately before the timing settings are changed. This minimizesthe risk of initializing a setting change too late in thetimer countdown period and generating undesired watchdog outputs. After changing the timing settings,two outcomes are possible based on WDO. If the change is made while WDO is asserted, the previous setting is allowed to finish, the characteristics of thenew setting are assumed, and the new startup phase is entered after a 300µs setup time (t SETUP) elapses. Ifthe change is made while WDO is not asserted, thenew setting is initiated immediately, and the new start-up phase is entered after the 300µs setup time elapses.MAX6369–MAX6374Pin-Selectable Watchdog Timers_______________________________________________________________________________________7 Figure 3. Setting Change TimingM A X 6369–M A X 6374Pin-Selectable Watchdog TimersSelecting 011 (SET2 = 0, SET1 = 1, SET0 = 1) disables the watchdog timer function on all devices in the family.Operation can be reenabled without powering down by changing the set inputs to the new desired setting. The device assumes the new selected timing characteris-tics and enter the startup phase after the 300µs setup time elapses (Figure 3).The MAX6373/MAX6374 offer a first-edge feature. In first-edge mode (settings 101 or 110, Table 1), the internal timer does not control the startup delay period.Instead, startup terminates when WDI sees a transition.If changing to first-edge mode while the device is oper-ating, disable mode must be entered first. It is then safe to select first-edge mode. Entering disable mode first ensures the output is unasserted when selecting first-edge mode and removes the danger of WDI being masked out.OutputThe MAX6369/MAX6371/MAX6373 have an active-low,open-drain output that provides a watchdog output pulse of 100ms. This output structure sinks current when WDO is asserted. Connect a pullup resistor from WDO to any supply voltage up to +5.5V.Select a resistor value large enough to register a logic low (see Electrical Characteristics ), and small enoughto register a logic high while supplying all input current and leakage paths connected to the WDO line. A 10k Ωpullup is sufficient in most applications. The MAX6370/MAX6372/MAX6374 have push-pull outputs that pro-vide an active-low watchdog output pulse of 1ms.When WDO deasserts, timing begins again at the beginning of the watchdog timeout period (Figure 2).Usage in Noisy EnvironmentsIf using the watchdog timer in an electrically noisy envi-ronment, a bypass capacitor of 0.1µF should be con-nected between V CC and GND as close to the device as possible, and no further away than 0.2 inches.________________Watchdog SoftwareConsiderationsTo help the watchdog timer monitor software execution more closely, set and reset the watchdog input at differ-ent points in the program, rather than pulsing the watch-dog input high-low-high or low-high-low. This technique avoids a stuck loop, in which the watchdog timer would continue to be reset inside the loop, keeping the watch-dog from timing out. Figure 4 shows an example of a flow diagram where the I/O driving the watchdog input is set high at the beginning of the program, set low at the end of every subroutine or loop, then set high again when the program returns to the beginning. If the pro-gram should hang in any subroutine, the problem would be quickly corrected, since the I/O is continually set low and the watchdog timer is allowed to time out, causing WDO to pulse.Figure 4. Watchdog Flow DiagramChip InformationTRANSISTOR COUNT: 1500PROCESS: BiCMOSPin ConfigurationMaxim cannot assume responsibility f or use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.8_____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©2003 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.。

MAX323中文资料

8 V+ 7 IN1 6 COM2 5 NC2
DIP/SO/µMAX
LOGIC
0 1
MAX325 SWITCH 1
OFF ON
SWITCH 2
ON OFF
________________________________________________________________ Maxim Integrated Products 1
For equivalent devices specified for dual-supply operation, see the MAX320/MAX321/MAX322 data sheet. For quad versions of the MAX320 series, see MAX391/ MAX392/MAX393 data sheet.
Continuous Current (any terminal) ......................................30mA Peak Current, COM_, NO_, NC_
(pulsed at 1ms, 10% duty cycle max) ............................100mA ESD per Method 3015.7 ..................................................>2000V Continuous Power Dissipation
<2.5nA at +85°C o Fast Switching: tON <150ns, tOFF <100ns o Guaranteed Break-Before-Make (MAX325 only) o TTL/CMOS Logic Compatible