LTM8025 - 36V、3A 降压型 μModule 转换器
ORION 800MHz 12W 35W 电力放大器单元维护手册说明书
MAINTENANCE MANUALORION™DESCRIPTIONThe R adio F requency (RF) Power Amplifiers for the Ericsson GE 800 MHz ORION™ mobile radio are pro-vided in frequency ranges and power levels designated as follows:•344A4574P1 (CAH-585L) - 806-870 MHz, 12 Watt used in low power applications•344A4574P2 (CAH-585H) - 806-870 MHz, 35/30 Watt used in high power applications.The exciter for each of the two power amplifiers is lo-cated on Synthesizer/Receiver/Exciter board CMN-358-1.This exciter circuit provides approximately 9 milliwatt input to the PA (refer to Maintenance Manual LBI-39070).The PA assembly uses two power modules to provide 12 Watts of output power for the 12-Watt amplifier. A power transistor is used to amplify the 12 Watts up to 35/30 Watts of output power for the 35/30-Watt amplifier (Refer to Fig-ures 1&2). Each power amplifier is provided with an an-tenna switching circuit to isolate the receive circuit from the transmit circuit, limiting the receiver input from being over driven due to large RF signals. Each power amplifier has a power detect circuit which controls an A utomatic P ower C ontrol (APC) circuit to keep the power output constant. A low-pass filter is provided in the antenna circuit to reduce harmonic emissions. A keyed TX 9V regulator is providedto power the APC circuits.LBI-39071Printed in U.S.A.Test Points (TP) are the printed circuit board terminals for measuring control voltages. Typical voltages are as follows:12-Watt Amplifier35/30-Watt Amplifier •TP1 (A+)13.5 V13.2 V•TP2 (ControlV oltage)3.83 V 3.32 V•TP3 (ForwardPower Detect)1.71 V2.04V•TP4 (TX 9V)8.93 V8.54 V•TP5 (APCV oltage on outputof DC AMPL IC2-1)1.71 V2.04 V•TP6 (V oltage to HC1,Pins 3 &4)12.5 V12.3 V•(TP7 APC V oltage) 3.40 V 3.40 VCIRCUIT ANALYSISSUPPLY VOLTAGESupply voltage for the power amplifier is connected from power leads on the System Interface Board to J3 (A+) and G (A-) on the PA Board. Diode CD7 is a surge protector to sup-press pulses on the power leads. (Diode CD1001 in the PA UNIT will cause a fuse to blow if the voltage polarity is re-versed. Refer to the PA INTERCONNECTION DIAGRAM)12-W ATT AMPLIFIERThe Exciter output is coupled through connector J151 on the Synthesizer/Receiver/Exciter Board to input connector P1 on the PA board. The 9 milliwatt RF input at P1 is coupled to power module HC1 through an attenuator pad consisting of re-sistors R1-R3. This pad attenuates the power input to HC1 and provides isolation between Exciter and PA. The power module (HC1) amplifies the exciter input to 0.6 watts.Power module HC1 consists of a three stage RF amplifier. The supply voltage for all stages of this amplifier is provided by TX 9V regulator IC1. This voltage can be measured at TP4.The 0.6 Watts from the output of HC1 is coupled to power module HC2 through an attenuator pad consisting of resistors R4-R7. Amplifier HC2 amplifies the 0.6 Watt input to 12 Watts output.This power module consists of a three-stage RF amplifier (Refer to IC DATA). The first stage power supply voltage is supplied by the IC1 (TX 9V).The second stage is powered by the power control circuit. This voltage can be measured at TP2. The second and third stage power supply voltage is supplied by SMOOTHING FILTER transistor TR2. The second and thirdstage RF amplifiers operate as class C.The 12 Watts output is coupled to the ANTENNA and AN-TENNA SWITCHING circuits through 50 ohm stripline Z3.35/30-W ATT AMPLIFIERThe 12 Watts output of HC2 is coupled to the base circuitof POWER AMPLIFIER transistor TR1 through, impedancematching components consisting of capacitors C13 throughC15, inductor L2 and impedance matching network Z1 throughcoupling capacitor C12. Transistor TR1 amplifies the 12 Wattlevel to 35/30 Watts. The output of TR1 is coupled to the AN-TENNA and ANTENNA SWITCH through an impedancematching components consisting impedance matching networkZ2, capacitors C17, C18, C23, C24, C25, C67 and C68, induc-tors L6 and L11 through coupling capacitor C33 and 50 ohmstripline Z3.ANTENNA SWITCHINGThe Antenna Switching circuit consists of two PIN diodes,CD3 and CD5, and a quarter-wave circuit with "lumped" con-stants capacitor C43 and inductor L9. Capacitor C43 and in-ductor L9 take the place of a quarter-wave micro stripline.When TX 9V output goes high, bias current flows throughswitching diodes CD3 and CD5. A low impedance now existsat the anode of CD5 and a high impedance exists at the nodeconnection of C43 and L9. This isolates the transmitter powerfrom the receiver. Diode CD3 is now an RF short and alongwith capacitor C33, couples the power to the lowpass filter andon to the antenna.TX 9V SWITCHWhen the TX ENB lead, located on the Synthesizer/Re-ceiver/Exciter board, goes low, the DC voltage on J151 goeslow. On the PA board, the DC voltage on P1 also goes lowcompleting the circuit for diode CD8. With CD8 conducting,PNP TX 9V Switch transistor TR6 conducts, applying A+(13.32 V) to the input of +9 V olt Regulator IC1. The regulated+9 volts applies bias to power modules HC1 and HC2, opera-tional amplifier IC2, and switching diodes CD3 and CD4. Thisvoltage can be measured at TP4.AUTOMATIC POWER CONTROLThe A uto P ower C ontrol (APC) circuit protects the trans-mitter PA from damage due to:a. excessive output powerb. excessive reflected powerorc. excessive temperatureThe output power control circuit allows the RF outputpower to be set at rated power by the APC voltage from theLogic/IF/Audio Board. If the output power of the PA in-creases, the detected voltage and the APC input to opera-tional amplifier IC2-2 increases. The output voltage ofoperational amplifier IC2-2 decreases. This causes DCDRIVER transistor TR5 to conduct less. This increases thebase voltage on PNP DC PASS transistor TR4, causing it toconduct less. This results in less voltage being applied to thefirst amplifier stage in RF power module HC2, reducing theoutput power of the PA in proportion to the increases in out-put power detected by the circuit.To protect the PA against badly mismatched loads, a re-verse power detector circuit (VSWR) consisting of diodeCD1, transistor TR5, operational amplifier IC2-2 and passtransistor TR4 detects reverse (reflected) power. When suffi-cient power is detected by CD1 to cause it to conduct, thevoltage at the output of IC2-2 decreases, causing the powermodule to lower the output power, protecting the PA. The re-verse power level is set by resistor R16 connected in serieswith diode CD1.The 35/30 watt PA is protected against temperature in-creases by a thermal detector circuit. This circuit consists ofresistor R34, THERMAL DETECT transistor TR6, DCDRIVER transistor TR5 and DC PASS transistor TR4 andoperational amplifier IC2-1. As temperature increases, theresistance to ground through thermal detector resistor R34increases. This causes IC2-1 to conduct less, causing a de-crease in PA output until the temperature level is reduced.The temperature level is set by resistor R28. When the heatsink temperature rises above 120-degrees Centigrade, the re-sistance of R34 increases and the power output is reduced.Copyright© May 1994, Ericsson GE Mobile Communications Inc.LBI-390711F i g u r e 1- 12-W a t t P o w e r A m p l i f i e r B l o c k D i a g r amF i g u r e 2 - 35/30-W a t t P o w e r A m p l i f i e r B l o c k D i a g r a mLBI-390712IC DATA806-870 MHz, 12-W ATT POWER MODULE HC1806-870 MHz, 35/30-W ATT POWER MODULE HC29 VOLT REGULATOR IC1OPERATIONAL AMPLIFIER IC2LBI-390713PARTS LISTPA UNIT344A4574P1/JHM-871L, 344A4574P2/JHM-871HIssue 1*COMPONENTS ADDED, DELETED OR CHANGED BY PRODUCTION CHANGESPA CIRCUIT CAH-585L (Used in 344A4574P1)PA CIRCUIT CAH-585H (Used in 344A4574P2)Issue 1LBI-390714OUTLINE DIAGRAM INTERCONNECTION DIAGRAMCOMPONENT SIDE(DD00-JHM-871P)12-W ATT POWER AMPLIFIERCAH-585L(B19/6 PCLD00282B, Component Side Layout(B19/6PCLD00282B, Chip Components)LBI-390715OUTLINE DIAGRAM12-W ATT POWER AMPLIFIER CAH-585L(B19/6PCLD00282B, Chip Components)35/30 W ATT POWER AMPLIFIERCAH-585H(19B/6PCLD00283B, Component Side Layout)(19b/6PCLD00283B, Chip Components)SOLDER SIDE COMPONENT SIDELBI-39071 6LBI-39071OUTLINE DIAGRAMSOLDER SIDE35/30 W ATT POWER AMPLIFIERCAH-585H(19B/6PCLD00283B, Chip Components)7SCHEMATIC DIAGRAM LBI-3907112 W ATT POWER AMPLIFIERCAH-585L(DD00-CAH-585L)8LBI-39071 SCHEMATIC DIAGRAMPOWER AMPLIFIER35 W ATT (806-825 MHz)30 W ATT (851-870 MHz)CAH-585H(DD00-CAH-585H)9。
康宝贝莱科技 523Da 精密直流电压和电流源说明书
Model 523直流电压和电流稳定性：±1ppm分辨率：7½位最大输出电流：110mA常规说明Krohn-Hite Model 523精密直流电源是一种高稳定和可重复的直流电压源和直流电流源，提供N.I.S.T.可跟踪的电压和电流，用于生产，校准实验室，质量保证和质量控制部门，设计实验室，或需要准确的电压和电流源的任何地方。
使用Krohn-Hite的最先进的参考，523能够提供90天的在±4ppm以内从±10nVdc到±110.99999Vdc的准确稳定的电压（±8ppm可持续1年），能够提供90天的在±8ppm以内从±10nA到±110.99999mA的精确的电流（±16ppm 可持续1年）。
它噪声很小，在10Hz至100kHz带宽上测量的噪声<7μVrms（在0.1Hz至10Hz带宽上<2μVrms）。
523具有用户友好的7½数字显示和所有设置可用薄膜键盘输入。
可以使用加/减增量功能，乘/除功能和光标控制键修改输出设置，光标控制键允许光标置于任何数字上对其值进行增加或减少。
输出2线，4线和机箱接地通过单触键或GPIB接口总线实现。
需要时，保护功能可将输出置于安全模式。
523可以设置为0V输出，允许输出检测维持真正的4线低阻抗零输出。
在范围变化之前，也会迅速强制为零，以防止出现任何“突变电压”。
自动零点偏移校准（AZOC）将任何热产生的偏移返回到特定限制范围内，并可通过前面板或通过GPIB接口总线访问。
使用KH523CAL测试和校准软件程序，和使用HP3458或Fluke 8508A数字电压表，可在大约15分钟内进行无干预的校准。
523提供最多31个输出设置的存储，可随时调用。
内部工作温度，序列号，上次校准日期和固件版本都可以显示在显示屏上，以便在需要时快速访问。
错误消息会在有错误或超范围时显示。
XLSEMI XL8002 80V 1A高效降压PWM LED常电流驱动器说明书
80V 1A High Efficiency Buck PFM LED Constant Current Driver XL8002FeaturesOperation Voltage DC 12V~80V. 0.1V current sense voltage reference. Directly drive 1~18 Series 1W/3W LED. Excellent line and load regulation.Internal Optimize Power HV-MOSFET. Built in Thermal Shutdown Function. Built in Current Limiting Function.Built in Soft-Start Circuit.Available in TO263-5L package. Up to 98% efficiency. ApplicationsLED Lighting & LED LAMP General purpose LED lightingGeneral DescriptionThe XL8002 is a monolithic high voltage switching regulator with PFM that is specifically designed to operate from a 12V~80V DC power supply.The XL8002 is a high efficiency LED driver switching regulator. The LED string is driven at DC constant current rather than constant voltage, thus providing constant light output and enhanced reliability.Figure1. Package Type of XL800280V 1A High Efficiency Buck PFM LED Constant Current Driver XL800280V 1A High Efficiency Buck PFM LED Constant Current Driver XL8002Figure4. XL8002 Typical Application80V 1A High Efficiency Buck PFM LED Constant Current Driver XL8002Figure5. Efficiency VS Output N*1W LEDFigure6. Output ILED Load Regulation VS Output N*1W LED80V 1A High Efficiency Buck PFM LED Constant Current Driver XL800280V 1A High Efficiency Buck PFM LED Constant Current Driver XL800280V 1A High Efficiency Buck PFM LED Constant Current Driver XL8002 Figure7. XL8002 System Application at VIN=60V~80V Schematic Figure8. XL8002 System Application at VIN=60V~80V Efficiency Curve80V 1A High Efficiency Buck PFM LED Constant Current Driver XL8002 Figure9. XL8002 System Application at VIN=36V~60V Schematic80V 1A High Efficiency Buck PFM LED Constant Current Driver XL8002Figure10. XL8002 System Application at VIN=36V~60V Efficiency Curve Table2: Figure9 Input VIN=36V/48V system parameters table:80V 1A High Efficiency Buck PFM LED Constant Current Driver XL8002Figure11. XL8002 System Application at VIN=12V~36V SchematicFigure12. XL8002 System Application at VIN=12V~36V Efficiency CurveTable3: Figure11 Input VIN=12V/24V system parameters table:VIN=12V VIN=24VFOSC Pout Efficiency FOSC Pout Efficiency1.01W 82.3%1.96W 90.8%2.91W 94.1%47.25K 3.80W 95.5%42.17K 4.70W 96.6%31.13K 5.61W 97.2%80V 1A High Efficiency Buck PFM LED Constant Current Driver XL8002 Figure13. XL8002 System Application at VIN=60V~80V Schematic Figure14. XL8002 System Application at VIN=60V~80V Efficiency Curve80V 1A High Efficiency Buck PFM LED Constant Current Driver XL800280V 1A High Efficiency Buck PFM LED Constant Current Driver XL8002。
LINEAR LTM8025 说明书
L DESIGN IDEASEasy LayoutThe LTM8025’s high level of integration simplifies the design of just about any 3A power supply. Just add two resis-tors, input and output capacitance to make a complete power supply. Layout is easy, as shown in Figure 1. Figures 2 and 3 show the schematic and ef-ficiency of the LTM8025 producing 12V bus power from a 24V source, while Figure 4 shows the LTM8025 producing 1.8V from an input range of 3.6V to 36V.Versatile Feature SetThe LTM8025 may be operated over a wide frequency, from 200kHz to 2.4MHz, and may be synchronized to an external clock source through the SYNC pin. The LTM8025 start-up is controlled through its RUN/SS pin, which also serves to put the part intoIntroductionAsk any group of engineers, “Whatwould you do with a 3A DC/DC con-verter?” and you will probably get a wide range of answers—from powering a DSP rail at 1.8V to running a bank of 24V switching I/O. Typically, these two particular applications would require completely different DC/DC controller ICs and topologies. How-ever, the LTM8025 µModule DC/DC converter can satisfy the requirements of these and just about any other 3A applications.The LTM8025 3A µModule DC/DC buck converter operates from 3.6V to 36V inputs to produce output voltages as low as 0.8V and as high as 24V. Furthermore, the LTM8025 features single cycle Burst Mode ® operation, so it is able to handle a wide range of load currents, from no load to 3A, with minimum ripple.Self-Contained 3A µModule Buck Regulator Produces 0.8V–24V Outputfrom 3.6V–36V InputV IN APPLICATIONS INFORMATION SECTION FOR START-UP DETAILSOUTµF Figure 2. A complete 12V at 3A power supply requires only the LTM8025, two capacitors and two resistors.OUTPUT CURRENT (mA)408060701009050E F F I C I E N C Y (%)050010001500200025003000Figure 3. The LTM8025 boasts high efficiency.V OUTµFFigure 4. The LTM8025 can produce low voltages from a wide input range.THERMAL VIAS TO GNDFigure 1. Layout is easy with the LTM8025.by David Ng The LTM8025 integrates the con-troller, control circuitry, inductor, power switch and rectifier all into a single IC form factor 15mm × 9mm × 4.32mm package. This LGA package is RoHS (e3) compliant, and features gold pads for easy assembly in both leaded and unleaded solder processes.continued on page 42L NEW DEVICE CAMEOSa low power off state in which the part draws less than 1µA. Furthermore, the part comes with a PGOOD pin to indicate that the output is within 90% of its target voltage.Parallel Multiple LTM8025s for High Current CapabilityThe LTM8025 is equipped with a SHARE pin to allow parallel operation for applications requiring more than 3A load current. Figure 5 shows two synchronized LTM8025’s providing 2.5V OUT at 5.6A.ConclusionThe highly versatile LTM8025 3A µModule DC/DC buck converter is easy to use and fits just about any step-down regulator need. Its wide input and output ranges and high level of integration reduce design effort and associated costs. LV IN *RUNNING VOL TAGE RANGE. PLEASE REFER TO APPLICATIONS INFORMATION SECTION FOR START-UP DETAILSNOTE: SYNCHRONIZE THE TWO MODULES TO AVOID BEAT FREQUENCIES,IF NECESSARY. OTHERWISE, TIE EACH SYNC TO GNDFigure 5. Two LTM8025s can be operated in parallel for more than 3A load current.LTM8025, continued from page 40The LT4356-2 is offered in 12-pin DFN and 16-pin SO packages, while the LT4356-3 is available in 12-pin DFN, 16-pin SO, and 10-pin MSOP packages.Dual Output Synchronous DC/DC Controller Draws Only 170µA in Battery-Powered SystemsThe LTC3868/-1 is a low quiescent current, 2-phase dual output synchro-nous step-down DC/DC controller. The LTC3868/-1 draws only 170µA with one output active and only 300µA when both outputs are active, making it ideal for battery-powered applica-tions. With both outputs shut down, the LTC3868/-1 draws only 8µA. The LTC3868/-1 has an input supply range of 4V to 24V and each output can be set from 0.8V to 14V at output cur-rents up to 20A. With efficiency as high as 95%, a LTC3868/-1 based DC/DC converter is well suited for powering industrial and medical devices, along with portable instruments, notebook and netbook computers.The LTC3868/-1 operates with a user-adjustable, fixed frequency between 50kHz and 900kHz, andcan be synchronized to an external clock from 75kHz to 850kHz using its phase-locked-loop (PLL). The user can select from continuous operation, pulse-skipping and low ripple Burst Mode operation during light loads. These parts also safely start up with a prebiased load by powering up and down in pulse-skipping mode.The LTC3868/-1’s 2-phase op-eration reduces input capacitance requirements and its current mode architecture provides easy loop com-pensation and fast transient response. Both outputs have adjustable soft-start to control the turn-on time, and the output overload protection feature latches off the converter until the input voltage is recycled. The LTC3868/ LTC3868-1 also features a tight ±1.5% reference voltage accuracy over a –40°C to 85°C operating temperature range. The LTC3868 is the fully fea-tured part with additional functions beyond the LTC3868-1 including a clock out, phase modulation, two power good outputs and adjustable current limit.The LTC3868 is offered in a 32-lead 5mm × 5mm QFN package and theLTC3868-1 in a 28-pin SSOP or 4mm × 5mm QFN-28 packages.Boost & Inverting DC/DC Converter for Active Matrix OLED & CCD BiasThe LT3582, LT3582-5 and LT3582-12 dual channel DC/DC converters that deliver both positive and negative outputs required in many biasing ap-plications such as active matrix OLED (organic light-emitting diode) displays as well as CCD (charge coupled device) applications. The LT3582/-5/-12 offer an I 2C interface that can dynamically program output voltages, power se-quencing and output voltage ramps as the application requires. Alternatively, these parameters can be set in manu-facturing and made permanent via the built in nonvolatile OTP (one time programmable) memory. The LT3582’s positive output voltage can be set be-tween 3.2V and 12.775 in 25mV steps, whereas the negative output can be set between –1.2V and –13.95V in 50mV steps. The LT3582-5 and LT3582-12 are pre-configured with ±5V and ±12V outputs respectively, useful in many signal conditioning applications. L。
具输出断接功能的1.5A、3MHz升压型转换器
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怎样采用一个μModule降压型稳压器从正输入产生负输出电压
怎样采用一个μModule降压型稳压器从正输入产生负输出电压如图1所示，通过将传统的降压型μModule?稳压器配置成一个负输出降压-升压型转换器，即可轻松地使其产生负输出电压。
输入电源的负端连接至μModule稳压器的VOUT引脚，而GND引脚则连接至-VOUT电源轨。
μModule稳压器所承受的实际输入电压(VIN’)为输入电源(VIN)与输出电压(-VOUT)的压差。
该电压必须处在器件的可容许输入范围之内。
此外，输出电压的绝对值一定不得超过μModule稳压器的最大额定输出电压。
由于器件现在的作用是一个负输出降压-升压型转换器，因此其开关电流大于同类的降压型转换器。
于是，必须考虑使诸如输出电流、开关频率、热性能等参数保持在器件的限值范围以内。
图1a：为产生正输出电压而配置的降压型μModule稳压器 图1b：为产生负输出电压而配置的降压型μModule稳压器 -12V输出应用 LTM8025是一款36VIN、3A降压型μModule转换器，能够支持高达24V的输出电压。
可轻松地通过配置使其产生负输出电压，而为此所需承担的设计工作量极少。
图2示出了LTM8025从一个20V至24V的输入范围产生-12V/2A输出的电路原理图。
LTM8025所承受的实际输入电压为VIN’=VIN-(-VOUT)。
例如：若VIN=20V，则VIN’=20V-(-12V)=32V。
由于LTM8025的最大额定输入为36V，因此该特定应用电路中的输入电源被限制为24V。
图2：针对-12V输出的LTM8025应用电路原理图 此外，通过把一个250kHz至2MHz的外部时钟信号施加至SYNC引脚，可对LTM8025的内部振荡器进行同步处理。
对于负输出电压，必须对时钟进行。
LTM8025EV#PBF;LTM8025IV#PBF;LTM8025MPV#PBF;DC1379A;中文规格书,Datasheet资料
18025faT YPICAL APPLICATIONF EATURESA PPLICATIONSD ESCRIPTION µModule RegulatorThe L TM ®8025 is a 36V IN , 3A step down μModule ® con-verter . Included in the package are the switching controller , power switches, inductor and all support components. Operating over an input voltage range of 3.6V to 36V , the L TM8025 supports an output voltage range of 0.8V to 24V and a switching frequency range of 200kHz to 2.4MHz, each set by a single resistor . Only the bulk input and output fi lter capacitors are needed to fi nish the design.The low profi le package (4.32mm) enables utilization of unused space on the bottom of PC boards for high density point of load regulation.The L TM8025 is packaged in a thermally enhanced, compact (15mm × 9mm) and low profi le (4.32mm) over-molded land grid array (LGA) package suitable for automated assembly by standard surface mount equipment. The L TM8025 is RoHS compliant.L , L T , L TC, L TM, Linear Technology, the Linear logo, μModule and Burst Mode are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.nComplete Step-Down Switch Mode Power Supply n Wide Input Voltage Range: 3.6V to 36V n Up to 3A Output Currentn Parallelable for Increased Output Current n 0.8V to 24V Output Voltagen Selectable Switching Frequency: 200kHz to 2.4MHz n Current Mode Controln (e4) RoHS Compliant Package with Gold Pad Finish n Programmable Soft-Start n Tiny, Low Profi le (15mm × 9mm × 4.32mm) Surface Mount LGA PackagenAutomotive Battery Regulation n Power for Portable Products n Distributed Supply Regulation n Industrial Supplies n Wall T ransformer RegulationEffi ciencyOUTPUT CURRENT (mA)4080607010090508025 TA01bE F F I C I E N C Y (%)0500100015002000250030008025 TA01aV IN APPLICATIONS INFORMATION SECTION FOR START-UP DETAILSV OUT12V AT 3AμF/28025faA BSOLUTE MAXIMUM RATINGS V IN , RUN/SS Voltage .................................................36V ADJ, RT, SHARE Voltage .............................................6V V OUT , AUX .................................................................25V PGOOD, SYNC...........................................................30V BIAS .. (25V)V IN + BIAS.................................................................56V Maximum Junction Temperature (Note 2) ............125°C Solder Temperature ...............................................245°C(Note 1)ORDER INFORMATIONP IN CONFIGURATIONE LECTRICAL CHARACTERISTICS Thel denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at T A = 25°C. V IN = 12V , RUN/SS = 12V , BIAS = 3V unless otherwise noted. (Note 2)PARAMETER CONDITIONSMINTYP MAX UNITSMinimum Input Voltage l3.6V Output DC Voltage 0 < I OUT ≤ 3A; R ADJ Open0 < I OUT ≤ 3A; R ADJ = 16.9k; V IN = 32V 0.824V V Output DC Current V OUT = 3.3V3A Quiescent Current into V INRUN/SS = 0V Not SwitchingBIAS = 0V , Not Switching 0.012585160150μA μA μA Quiescent Current into BIASRUN/SS = 0V Not SwitchingBIAS = 0V , Not Switching 0.016500.51205μA μA μA Line Regulation 5.5V < V IN < 36V , I OUT = 1A 0.3%Load Regulation0A < I OUT < 3A0.4%LEAD FREE FINISH TRAYPART MARKING PACKAGE DESCRIPTIONTEMPERATURE RANGE L TM8025EV#PBF L TM8025EV#PBF 8025V 70-Lead (15mm × 9mm × 4.32mm) LGA –40°C to 125°C L TM8025IV#PBF L TM8025IV#PBF 8025V 70-Lead (15mm × 9mm × 4.32mm) LGA –40°C to 125°C L TM8025MPV#PBFL TM8025MPV#PBF8025MPV70-Lead (15mm × 9mm × 4.32mm) LGA–55°C to 125°CConsult L TC Marketing for parts specifi ed with wider operating temperature ranges.For more information on lead free part marking, go to: http://www.linear .com/leadfree/This product is only offered in trays. For more information go to: http://www.linear .com/packaging//38025faE LECTRICAL CHARACTERISTICS Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime.Note 2: The L TM8025E is guaranteed to meet performance specifi cations from 0°C to 125°C internal. Specifi cations over the full –40°C to 125°C internal operating temperature range are assured by design,PARAMETERCONDITIONS MINTYP MAXUNITS Output Voltage Ripple (RMS)0A < I OUT < 3A 10mV Switching Frequency R T = 45.3k 775kHz Voltage (at ADJ Pin)l775770790805810mV mV Current Out of ADJ PinADJ = 1V , V OUT = 0V 2μA Minimum BIAS Voltage for Proper Operation2 2.8V RUN/SS Pin Current RUN/SS = 2.5V 510μA RUN Input High Voltage2.5V RUN Input Low Voltage 0.2V PGOOD Threshold (at ADJ Pin)V OUT Rising 710mV PGOOD Leakage Current PGOOD = 30V 0.11μA PGOOD Sink Current PGOOD = 0.4V 200700μA SYNC Input Low Threshold f SYNC = 550kHz 0.5V SYNC Input High Threshold f SYNC = 550kHz 0.7V SYNC Bias CurrentSYNC = 0V0.1μAThe l denotes the specifi cations which apply over the full operatingtemperature range, otherwise specifi cations are at T A = 25°C. V IN = 12V , RUN/SS = 12V , BIAS = 3V unless otherwise noted. (Note 2)characterization and correlation with statistical process controls. The L TM8025I is guaranteed to meet specifi cations over the full –40°C to 125°C internal operating temperature range. The L TM8025MP is guaranteed to meet specifi cations over the full –55°C to 125°C internal operating temperature range. Note that the maximum internal temperature is determined by specifi c operating conditions in conjunction with board layout, the rated package thermal resistance and other environmental factors./48025fa408060701009050E F F I C I E N C Y (%)500100015002000250030008025 G04LOAD CURRENT (mA)T YPICAL PERFORMANCE CHARACTERISTICS 2.5V OUT Effi ciency3.3V OUT Effi ciency5V OUT Effi ciency8V OUT Effi ciency12V OUT Effi ciency18V OUT Effi ciencyBias Current vs Load Current 2.5V OUTBias Current vs Load Current 3.3V OUTBias Current vs Load Current 5V OUT408060701009050E F F I C I E N C Y (%)500100015002000250030008025 G01LOAD CURRENT (mA)408060701009050E F F I C I E N C Y (%)500100015002000250030008025 G02LOAD CURRENT (mA)408060701009050E F F I C I E N C Y (%)500100015002000250030008025 G03LOAD CURRENT (mA)408060701009050E F F I C I E N C Y (%)500100015002000250030008025 G05LOAD CURRENT (mA)408060701009050E F F I C I E N C Y (%)500100015002000250030008025 G06LOAD CURRENT (mA)8025 G07LOAD CURRENT (mA)525201510B I A SC U R R E N T (m A )1000200030008025 G08LOAD CURRENT (mA)53025201510B I A S C U R R E N T (m A)1000200030008025 G09LOAD CURRENT (mA)540352520301510B I A S C U R R E N T (m A )100020003000T A = 25°C, unless otherwise noted./58025faTYPICAL PERFORMANCE CHARACTERISTICSBias Current vs Load Current 8V OUTBias Current vs Load Current 12V OUTBias Current vs Load Current 18V OUTInput Current vs Load Current 2.5V OUTInput Current vs Load Current 3.3V OUTInput Current vs Load Current 5V OUTInput Current vs Load Current 8V OUTInput Current vs Load Current 12V OUTInput Current vs Load Current 18V OUT8025 G10LOAD CURRENT (mA)08070605040203010B I A S C U R R E N T (m A )1000200030008025 G11LOAD CURRENT (mA)B I A SC U R R E N T (m A )100020003000706050402030108025 G12LOAD CURRENT (mA)12010080604020B I A S C U R R E N T (m A )500100015008025 G13LOAD CURRENT (mA)5002500200015001000I N P U T C U R R E N T (m A )1000200030008025 G14LOAD CURRENT (mA)5002500200015001000I N P U T C U R R E N T (m A )1000200030008025 G15LOAD CURRENT (mA)4006008002001600140012001000I N P U T C U R R E N T (m A )1000200030008025 G16LOAD CURRENT (mA)5002500200015001000I N P U T C U R R E N T (m A )1000200030008025 G17LOAD CURRENT (mA)50030002500200015001000I N P U T C U R R E N T (m A )1000200030008025 G18LOAD CURRENT (mA)50030002500200015001000I N P U T C U R R E N T (m A )100020003000T A = 25°C, unless otherwise noted./68025fa8025 G22LOAD CURRENT (mA)4.06.57.57.06.05.55.04.5I N P U T V O L T A G E (V )100020003000T YPICAL PERFORMANCE CHARACTERISTICS Input Current vs Input VoltageOutput ShortedMinimum Input Running Voltage vs V OUT , I OUT = 3AMinimum Input Voltage vs Load Current, 3.3V OUTMinimum Input Voltage vs Load Current, 5V OUTMinimum Input Voltage vs Load Current, 8V OUTMinimum Input Voltage vs Load Current, 12V OUTMinimum Input Voltage vs Load Current, 18V OUTMinimum Input Voltage vs Load Current, –3.3V OUTMinimum Input Voltage vs Load Current, –5V OUTINPUT VOL TAGE (V)I N P U T C U R R E N T (m A )60050030020010040008025 G19201030OUTPUT VOL TAGE (V)01I N P U T V O L T A G E (V )40353020102515514710118025 G2015129813532648025 G21LOAD CURRENT (mA)3.03.56.05.55.04.54.0I N P U T V O L T A G E (V )1000200030008025 G25LOAD CURRENT (mA)1232271722I N P U T V O L T A G E (V )1000200030008025 G26LOAD CURRENT (mA)12345671098I N P U T V O L T A G E (V )1000200030008025 G27LOAD CURRENT (mA)1014128642I N P U T V O L T A G E (V )100020003000T A = 25°C, unless otherwise noted.8025 G23LOAD CURRENT (mA)8.010.511.010.09.59.08.5I N P U T V O L T A G E (V )1000200030008025 G24LOAD CURRENT (mA)1213141516171819222120I N P U T V O L T A G E (V )100020003000/78025fa8025 G31LOAD CURRENT (mA)051510453530254020T E M P E R A T U R E R I S E (°C )500100015002000250030003500T YPICAL PERFORMANCE CHARACTERISTICS Minimum Input Voltage vs LoadCurrent, –8V OUTMinimum Input Voltage vs Load Current, –12V OUTMinimum Input Voltage vs Negative V OUTJunction Temperature Rise vs Load Current, 2.5V OUTJunction Temperature Rise vs Load Current, 3.3V OUTJunction Temperature Rise vs Load Current, 5V OUTJunction Temperature Rise vs Load Current, 8V OUTJunction Temperature Rise vs Load Current, 12V OUTJunction Temperature Rise vs Load Current, 18V OUT8025 G28LOAD CURRENT (mA)5101520I N P U T V O L T A G E (V )1000200030008025 G29LOAD CURRENT (mA)25302015105I N P U T V O L T A G E (V )1000200030008025 G13OUTPUT VOL TAGE (V)525201510I N P U T V O L T A G E (V )–5–10–155001000150020002500300035008025 G32106050304020T E MP E R A T U R E R I S E (°C )LOAD CURRENT (mA)5001000150020002500300035008025 G33LOAD CURRENT (mA)5151050453530254020T E M P E R A T U R E R I S E (°C )8025 G34LOAD CURRENT (mA)01080706050304020T E M P E R AT U R E R I S E (°C )500100015002000250030003500T A = 25°C, unless otherwise noted.8025 G35LOAD CURRENT (mA)12010080604020T E M P E R A T U R E R I S E (°C )0500100015002000250030008025 G36LOAD CURRENT (mA)10080604020T E M P E R A T U R E R I S E (°C )0500100015002000/P IN FUNCTIONSV OUT (Bank 1): Power Output Pins. Apply the output fi lter capacitor and the output load between these pins and GND pins.GND (Bank 2): Tie these GND pins to a local ground plane below the LTM8025 and the circuit components. In most applications, the bulk of the heat fl ow out of the LTM8025 is through these pads, so the printed circuit design has a large impact on the thermal performance of the part. See the PCB Layout and Thermal Considerations sections for more details. Return the feedback divider (R ADJ) to this net.V IN (Bank 3): The V IN pin supplies current to the L TM8025’s internal regulator and to the internal power switch. This pin must be locally bypassed with an external, low ESR capacitor; see Table 1 for recommended values.AUX (Pin G5): Low Current Voltage Source for BIAS. In many designs, the BIAS pin is simply connected to V OUT. The AUX pin is internally connected to V OUT and is placed adjacent to the BIAS pin to ease printed circuit board rout-ing. Although this pin is internally connected to V OUT, it is not intended to deliver a high current, so do not draw current from this pin to the load. If this pin is not tied to BIAS, leave it fl oating.BIAS (Pin H5): The BIAS pin connects to the internal power bus. Connect to a power source greater than 2.8V and less than 25V. If the output is greater than 2.8V, connect this pin there. If the output voltage is less, connect this to a voltage source between 2.8V and 25V. Also, make sure that BIAS + V IN is less than 56V.RUN/SS (Pin L5): Pull the RUN/SS pin below 0.2V to shut down the L TM8025. Tie to 2.5V or more for normal operation. If the shutdown feature is not used, tie this pin to the V IN pin. RUN/SS also provides a soft-start function; see the Applications Information section.SYNC (Pin L6): This is the external clock synchronization input. Ground this pin for low ripple Burst Mode operation at low output loads. Tie to a stable voltage source greater than 0.7V to disable Burst Mode operation. Do not leave this pin fl oating. Tie to a clock source for synchroniza-tion. Clock edges should have rise and fall times faster than 1μs. See the Synchronization section in Applications Information.RT (Pin G7): The RT pin is used to program the switching frequency of the L TM8025 by connecting a resistor from this pin to ground. Table 2 gives the resistor values that correspond to the resultant switching frequency. Minimize the capacitance at this pin.SHARE (Pin H7): Tie this to the SHARE pin of another L TM8025 when paralleling the outputs. Otherwise, do not connect.PGOOD (Pin J7): The PGOOD pin is the open-collector output of an internal comparator. PGOOD remains low until the ADJ pin is within 10% of the final regulation voltage. PGOOD output is valid when V IN is above 3.6V and RUN/SS is high. If this function is not used, leave this pin fl oating.ADJ (Pin K7): The L TM8025 regulates its ADJ pin to 0.79V. Connect the adjust resistor from this pin to ground. The value of R ADJ is given by the equation R ADJ = 394.21/(V OUT – 0.79), where R ADJ is in kΩ./88025faB LOCK DIAGRAM O PERATIONThe L TM8025 is a standalone nonisolated step-down switching DC/DC power supply that can deliver up to 3A of output current. This module provides a precisely regulated output voltage programmable via one external resistor from 0.8V to 25V. The input voltage range is 3.6V to 36V. Given that the L TM8025 is a step-down converter, make sure that the input voltage is high enough to support the desired output voltage and load current.As shown in the Block Diagram, the L TM8025 contains a current mode controller, power switching element, power inductor, power Schottky diode and a modest amount of input and output capacitance. The L TM8025 is a fi xed frequency PWM regulator. The switching frequency is set by simply connecting the appropriate resistor value from the RT pin to GND.An internal regulator provides power to the control circuitry. The bias regulator normally draws power from the V IN pin, but if the BIAS pin is connected to an external volt-age higher than 2.8V, bias power will be drawn from the external source (typically the regulated output voltage). This improves effi ciency. The RUN/SS pin is used to place the L TM8025 in shutdown, disconnecting the output and reducing the input current to less than 1μA.To further optimize effi ciency, the L TM8025 automatically switches to Burst Mode® operation in light load situations. Between bursts, all circuitry associated with controlling the output switch is shut down reducing the input supply current to 50μA in a typical application.The oscillator reduces the L TM8025’s operating frequency when the voltage at the ADJ pin is low. This frequency foldback helps to control the output current during start-up and overload.The L TM8025 contains a power good comparator which trips when the ADJ pin is at roughly 90% of its regulated value. The PGOOD output is an open-collector transistor that is off when the output is in regulation, allowing an external resistor to pull the PGOOD pin high. Power good is valid when the L TM8025 is enabled and V IN is above 3.6V. The L TM8025 is equipped with a thermal shutdown that will inhibit power switching at high junction tempera-tures. The activation threshold of this function, however, is above 125°C to avoid interfering with normal operation. Thus, prolonged or repetitive operation under a condition in which the thermal shutdown activates may damage or impair the reliability of the device./98025faA PPLICATIONS INFORMATIONF or most applications, the design process is straight forward, summarized as follows:1. Look at Table 1 and fi nd the row that has the desired input range and output voltage.2. Apply the recommended C IN, C OUT, R ADJ and R T values.3. Connect BIAS as indicated.While these component combinations have been tested for proper operation, it is incumbent upon the user to verify proper operation over the intended system’s line, load and environmental conditions. Bear in mind that the maximum output current is limited by junction tempera-ture, the relationship between the input and output voltage magnitude and polarity and other factors. Please refer to the graphs in the Typical Performance Characteristics section for guidance.The maximum frequency (and attendant R T value) at which the L TM8025 should be allowed to switch is given in Table 1 in the f MAX column, while the recommended frequency (and R T value) for optimal effi ciency over the given input condition is given in the f OPTIMAL column. There are additional conditions that must be satisfi ed if the synchronization function is used. Please refer to the Synchronization section for details.Capacitor Selection ConsiderationsThe C IN and C OUT capacitor values in Table 1 are the minimum recommended values for the associated oper-ating conditions. Applying capacitor values below those indicated in Table 1 is not recommended, and may result in undesirable operation. Using larger values is generally acceptable, and can yield improved dynamic response, if it is necessary. Again, it is incumbent upon the user to verify proper operation over the intended system’s line, load and environmental conditions.Ceramic capacitors are small, robust and have very low ESR. However, not all ceramic capacitors are suitable. X5R and X7R types are stable over temperature and ap-plied voltage and give dependable service. Other types, including Y5V and Z5U have very large temperature and voltage coeffi cients of capacitance. In an application cir-cuit they may have only a small fraction of their nominal capacitance resulting in much higher output voltage ripple than expected.Ceramic capacitors are also piezoelectric. In Burst Mode operation, the L TM8025’s switching frequency depends on the load current, and can excite a ceramic capacitor at audio frequencies, generating audible noise. Since the L TM8025 operates at a lower current limit during Burst Mode operation, the noise is typically very quiet to a casual ear.If this audible noise is unacceptable, use a high perfor-mance electrolytic capacitor at the output. It may also be a parallel combination of a ceramic capacitor and a low cost electrolytic capacitor.A fi nal precaution regarding ceramic capacitors concerns the maximum input voltage rating of the L TM8025. A ceramic input capacitor combined with trace or cable inductance forms a high Q (under damped) tank circuit. If the L TM8025 circuit is plugged into a live supply, the input voltage can ring to twice its nominal value, possi-bly exceeding the device’s rating. This situation is easily avoided; see the Hot-Plugging Safely section. Frequency SelectionThe L TM8025 uses a constant frequency PWM architec-ture that can be programmed to switch from 200kHz to 2.4MHz by using a resistor tied from the RT pin to ground. Table 2 provides a list of R T resistor values and their re-sultant frequencies./108025fa分销商库存信息:LINEAR-TECHNOLOGYLTM8025EV#PBF LTM8025IV#PBF LTM8025MPV#PBF DC1379A。
5V转3.3V，3V，2.8V，1.8V降压2A芯片电路-PW2051
PW2051 是一款由基准电压源、振荡电路、比较器、 PWM/PFM 控制电路等构成的 CMOS 降压型 DC/DC 调整器。
利用 PWM/PFM 自动切换控制电路达到可调占空比，具有全输入电压范围内的低纹波、高效率和大输出电流等特点。
PW2051 内置功率 MOSFET，集成了过压、过流、过热、 短路等诸多保护电路，在超过控制值时会自动断开，以保护芯片。
本产品结合了微型封装和低消耗电流等特点，最适合在移动设备的电源内部使用。
PW2051采用SOT23-5L封装配合较少的外围原件使其非常适用于便携式产品.产品特点●最大效率可达 95％●最大输出电流 1.5A●超低静态电流 40μA●甚小输出纹波 <±0.4%●低压操作 可达 100％占空比●PWM/PFM 自动切换 占空比自动可调以保持全负载范围内的高效率、低纹波●短路保护应用范围●数码相机、电子记事本、 PDA 等移动设备电源●照相机、视频设备、通信设备的稳压电源●微机电源●机顶盒典型应用电路C1为可选电容引脚配置/说明引脚号符号 引脚说明 1CE 芯片使能端，高有效 2GND 地 3LX 内部功率开关输出端口 4VIN 电源输入端 5 FB 输出电压反馈端绝对最大额定值 项目符号 绝对最大额定值 单位 输入电压VIN -0.3～6.5V 输出电压VFB -0.3～6.5 V VLX -0.3～VIN + 0.3 V CE 端电压VCE -0.3～VIN + 0.3 V LX 端电流ILX ±2 A 容许功耗Pd 250 mW 工作环境温度Topr -40～＋85 ℃ 保存温度 Tstg -55～＋125 ℃CE GND LX FB SOT-23-5L (TOP VIEW)VIN 12345PCB 布局为了使噪音最低和操作性能最佳， PCB 布局时以下几点建议可作为参考：1、 VIN、 LX 、 GND 组成的功率通路，尽量采用短而宽的布线，避免过孔。
无线路由器用户手册说明书
目錄I.產品資訊 (1)I-1. 包裝內容物 (1)I-2. LED狀態 (2)I-3. 背面面板 (3)I-4. 安全資訊 (4)II.安裝 (5)II-1. 無線分享器模式 (8)II-2. 無線基地台模式 (13)II-3. 無線訊號延伸器模式 (18)II-4. 無線橋接器模式 (25)II-5. 無線公共熱點模式 (31)II-6. WPS設定 (39)II-7. 恢復出廠預設值 (39)III.網頁式設定介面 (40)III-1. 登入 (40)III-2. 儲存設定值 (42)III-3. 主功能表 (43)III-3-1. 狀態 (44)III-3-2. 安裝精靈 (45)III-3-3. 網際網路/WISP (47)III-3-3-1. WAN 設定 (48)III-3-3-1-1. 動態IP (48)III-3-3-1-2. 靜態IP (49)III-3-3-1-3. PPPoE (50)III-3-3-1-4. PPTP (52)III-3-3-1-5. L2TP (54)III-3-3-2. DDNS (56)III-3-4. 區域網路 (57)III-3-5. 2.4GHz 無線及5GHz 無線 (60)III-3-5-1. 基本 (60)III-3-5-1-2. WEP (64)III-3-5-1-3. WPA / WPA2 加密技術 (65)III-3-5-1-4. WPA RADIUS (66)III-3-5-2. 訪客/多重無線網路 (67)III-3-5-3. WPS (70)III-3-5-4. 存取控制 (71)III-3-5-5. 無線排程 (73)III-3-6. 防火牆 (74)III-3-6-1. URL Blocking (74)III-3-6-2. 存取控制 (75)III-3-6-3. DMZ (79)III-3-6-4. DoS (80)III-3-7. QoS (82)III-3-7-1. QoS (82)III-3-7-2. iQoS (85)III-3-8. 進階 (87)III-3-8-1. 靜態路由 (87)III-3-8-2. Port Forwarding (88)III-3-8-3. Virtual Server (89)III-3-8-4. 2.4GHz 無線 (91)III-3-8-5. 5GHz 無線 (92)III-3-8-6. IGMP (92)III-3-8-7. UPnP (93)III-3-9. 管理平台 (94)III-3-9-1. 時區 (94)III-3-9-2. 密碼 (95)III-3-9-3. 遠端存取 (95)III-3-9-4. 備份／還原 (96)III-3-9-5. 升級 (96)III-3-9-6. 重新開機 (97)III-3-9-8. 已啟用的DHCP 終端 (98)III-3-9-9. 統計 (98)IV.附錄 (99)IV-1. 設定您的IP 位址 (99)IV-1-1. 如何檢查您的電腦是否使用動態IP 位址 (100)IV-1-1-1. Windows XP (100)IV-1-1-2. Windows 7 (101)IV-1-1-3. Windows 8 (104)IV-1-1-4. Mac OS (108)IV-1-2. 如何修改您電腦的IP 位址 (110)IV-1-2-1. Windows XP (110)IV-1-2-2. Windows 7 (111)IV-1-2-3. Windows 8 (114)IV-1-2-4. Mac (118)IV-1-3. 如何尋找您的網路安全性金鑰 (121)IV-1-3-1. Windows 7 (121)IV-1-3-2. Mac (123)IV-1-4. 如何尋找您分享器的IP 位址 (126)IV-1-4-1. Windows XP / 7 (126)IV-1-4-2. Windows 8 (128)IV-1-4-3. Mac (130)IV-2. 連接至Wi-Fi 網路 (132)IV-3. 疑難排解 (134)I.產品資訊I-1. 包裝內容物在您開始使用本產品之前，請檢查包裝中是否有任何物品短缺，並請洽原購買經銷商或店家協助：網路線快速安裝指南電源變壓器CD-ROMBR-6208ACI-2. LED狀態I-3. 背面面板天線 重設／WPS 按鈕天線I-4. 安全資訊為確保本產品及其使用者的安全，請閱讀並依下列安全性指示說明操作。
LM2576T-5.0 3A降压稳压器应用方案-奥伟斯
奥伟斯科技为您提供3A降压稳压器LM2576T-5.0应用方案●内容导航：●公司简介●LM2576T-5.0产品规格书●产品图片●优势产品简介●公司简介深圳市奥伟斯科技有限公司是一家专注触摸芯片,单片机,电源管理芯片,语音芯片,场效应管,显示驱动芯片,网络接收芯片,运算放大器,红外线接收头及其它半导体产品的研发,代理销售推广的高新技术企业.奥伟斯科技自成立以来一直致力于新半导体产品在国内的推广与销售,年销售额超过壹亿人民币是一家具有综合竞争优势的专业电子元器件代理商.本公司代理推广的一系列优秀触摸芯片及语音芯片，现以大批量应用到智能电子锁、饮水机、电饭煲、LED台灯等控制器为顾客提供最佳解决方案，受到广大客户的一致赞誉。
奥伟斯科技优势行业集中在家用电器和汽车电子领域，包括：智能电子锁、饮水机、抽烟机、空调、洗衣机、冰箱、洗碗机、电饭煲、电磁炉、微波炉、电动自行车、汽车仪表、汽车音响、汽车空调等。
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奥伟斯科技已为众多世界著名企业提供服务如：美的、小米、云米、长虹、创维、三星、LG、飞利浦、TCL、海尔、美菱、沁园、等众多中国一流品牌电家厂商奥伟斯科技提供专业的智能电子锁触摸解决方案,并提供电子锁整套的芯片配套:低功耗触摸芯片低功耗单片机马达驱动芯片显示驱动芯片刷卡芯片时针芯片存储芯片语音芯片低压MOS 管 TVS二极管主要品牌产品:OWEIS-TECHOWEIS触摸芯片 OWEIS接口芯片 OWEIS电源芯片 OWEIS语音芯片 OWEIS场效应管一.电容式触摸芯片ADSEMI触摸芯片代理芯邦科技触控芯片万代科技触摸按键芯片博晶微触摸控制芯片海栎创触摸感应芯片启攀微触摸IC 融和微触摸感应IC 合泰触摸按键IC 通泰触摸芯片二.汽车电子/电源管理/接口芯片/逻辑芯片:IKSEMICON一级代理 ILN2003ADT IK62783DT IL2596 IL2576 ILX485 ILX3485 ILX232 ILX3232三.功率器件/接收头/光电开关:KODENSHI AUK SMK系列MOS管SMK0260F SMK0460F SMK0760F SMK1260F SMK1820F SMK18T50F四. LED显示驱动芯片:中微爱芯AIP系列 AIP1668 AIP1628 AIP1629 AIP1616天微电子TM系列 TM1628TM1668 TM1621五.电源管理芯片:Power Integrations LNK364PN LNK564PN 芯朋微PN8012 PN8015 AP5054 AP5056 力生美晶源微友达天钰电子FR9886 FR9888六.语音芯片:APLUS巨华电子AP23085 AP23170 AP23341 AP23682 AP89085 AP89170 AP89341 AP89341K AP89682七.运算放大器:3PEAK运算放大器聚洵运算放大器圣邦微运算放大器八.发光二极管:OSRAM欧司朗发光二极管 Lite-On光宝发光二极管 Everlight亿光发光二极管 Kingbright今台发光二极管九. CAN收发器:NXP恩智浦CAN收发器 Microchip微芯CAN收发器十.分销产品线:ONSEMI安森美 TI德州仪器 ADI TOSHIBA东芝 AVAGO安华高十一 MCU单片机ABOV现代单片机MC96F系列 Microchip微芯单片机PIC12F PIC16F PIC18F系列FUJITSU富仕通单片机MB95F系列 STM单片机STM32F STM32L系列 CKS中科芯单片机CKS32F系列 TI单片机MSP430系列 TMS320F系列 NXP单片机LPC系列DescriptionThe MIK2576 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving 3A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output versions. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixed-frequency oscillator. The MIK2576 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in some cases no heat sink is required. A standard series of inductors optimized for use with the MIK2576 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies. Other features include a guaranteed ± 4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50µA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.Note: The MIK2576HV is not produced yet.Features• 3.3V, 5V, 12V, 15V, and adjustable output versions •Adjustable version output voltage range• 1.23V to 37V (57V for HV version) ± 4% max over line and load conditions•Guaranteed 3A output current•Wide input voltage range, 40V up to 60V for HV version•Requires only 4 external components•52 kHz fixed frequency oscillator•TTL shutdown capability, low power standby mode •High efficiency•Uses readily available standard inductors •Thermal shutdown and current limit protection Applications•Simple high-efficiency step-down (buck) regulator •Efficient pre-regulator for linear regulators•On-card switching regulators•Positive to negative converter (Buck-Boost)Typical application Figure 1.(Fixed Output Voltage Versions) 7V - 40V(60V for HV) UNREGULATEDDC INPUT +5V REGULATED OUTPUT3A+Block DiagramUNREGULATED DC INPUTC IN3.3V, R2 =1.7K 5V, R2 = 3.1K 12V, R2 = 8.84K 15V, R2 =11.3K For ADJ, Version R1 = Open, R2 =0ΩElectrical Characteristics MIK2576-3.3, MIK2576HV-3.3Electrical Characteristics MIK2576-5.0, MIK2576HV-5.0Electrical Characteristics MIK2576-12, MIK2576HV-12Electrical Characteristics MIK2576-15, MIK2576HV-15Electrical Characteristics MIK2576-ADJ, MIK2576HV-ADJAll Output Voltage V ersionsElectrical CharacteristicsSpecifications with standard type face are for T J = 25°C, and those with boldface type apply over full Operating Temperature Range. Unless otherwise specified, V IN =12V for the 3.3V, 5V, and Adjustable version, V IN =25V for the 12V version, and V IN =30V for the 15VNote 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits.For guaranteed specifications and test conditions, see the Electrical Characteristics.Note 2: All limits guaranteed at room temperature (standa rd type face) and at temperature extremes (bold type face).Note 3: External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the MIK2576/MIK2576HV is used as shown in the Figure 2 test circuit, system performance will be as shown in system parameters section of Electrical Characteristics.Note 4: Output pin sourcing current. No diode, inductor or capacitor connected to output.Note 5: Feedback pin removed from output and connected to 0V.Note 6: Feedback pin removed from output and connected to +12V for the Adjustable, 3.3V, and 5V, versions, and +25V for the 12V and 15V versions, to force the output transistor OFF.Note 7: V IN =40V (60V for high voltage version).Note 8: The oscillator frequency reduces to approximately 11 kHz in the event of an output short or an overload which causes the regulated output voltage to drop approximately 40% from the nominal output voltage. This self protections feature lowers the average power dissipation of the IC by lowering the minimum duty cycle from 5% down to approximately 2%.Typical Performance Characteristics (Circuit of Figure 2)Normalized Output VoltageLine RegulationDropout VoltageJUNCTION TEMPERATURE (°C)INPUT VOLTAGE (V)JUNCTION TEMPERATURE (°C)StandbyQuiescent Current Quiescent CurrentCurrent LimitJUNCTION TEMPERATURE (°C) INPUT VOLTAGE (V) JUNCTION TEMPERATURE (°C)Switch SaturationVoltageEfficiencyOscilator FrequencySWITCH C URRENT (A) INPUT VOLTAGE (V) JUNCTION TEMPERATURE (°C)Minimum Operating VoltageQuiescent Currentvs Duty CycleFeedback Voltage vs Duty CycleJUNCTION TEMPERATURE (°C)DUTY CYCLE (%)DUTY CYCLE (%)I L OA D = 200mA15V OUT5VI L OA D = 3AI L OA D = 200mAAdjustable Version OnlyV IN = 7VV IN = 40V I LOAD = 500mAAdjustable Version OnlyI LOAD = 50 0mAV IN = 40VV IN = 7VMaximum Power Dissipation (TO-263)Feedback Pin CurrentAMBIENT TEMPERATURE (°C)JUNCTION TEMPERATURE (°C)Switching Waveforms Load TransientAOutput Voltage ChangeC Load CurrentD5s/div100V OUT =15VA: Output Pin Voltage, 50V/div B: Output Pin Current, 2A/div C: Inductor Current, 2A/divD: Output Ripple Voltage, 50mV/div, AC-CoupledHorizontal Time Base: 5µs/divBL O A DTest Circuit and Layout GuidelinesAs in any switching regulator, layout is very important. Rapidly switching currents associated with wiring inductance generate voltage transients which can cause problems. For minimal inductance and ground loops, the length of the leads indicated by heavy lines should be kept as short as possible.Single-point grounding (as indicated) or ground plane construction should be used for best results. When using the Adjustable version, physically locate the programming resistors near the regulator, to keep the sensitive feedback wiring short.Fixed Output Voltage Versions (Figure 2a)V INUNREGULATED DC INPUT+V IN1+ G 1N 00DFFEEDBACK4OUTPUT25 L1 100 H +MBR360C OUT 1000V OUTC IN — 100µF, 75V, Aluminum Electrolytic C OUT —1000µF, 25V, Aluminum Electrolytic D1 — Schottky, MBR360L 1 — 100µH, Pulse Eng. PE-92108 R 1 — 2k, 0.1% R 2 — 6.12k, 0.1%Adjustable Output Voltage Version (Figure 2b)FEEDBACK7V -60V UNREGULATED DC INPUT+V IN1100F GND C INMIK2576HV- ADJ35 ON/OFF4OUTPUT2L1100MBR360 V OUT5.00VL C OUTR2O A 1000DR1V OUT V REF 1( + R2) RR 1 ( VOUT − )12V REFwhere V REF = 1.23V, R1 between 1k and 5k3 ON/OFFMIK2576HV- FIXED OUTPUT +奥伟斯科技提供专业的智能电子锁触摸解决方案,并提供电子锁整套的芯片配套:低功耗触摸芯片低功耗单片机马达驱动芯片显示驱动芯片刷卡芯片时针芯片存储芯片语音芯片低压MOS管 TVS二极管低功耗触摸按键芯片OWEIS奥伟斯触摸芯片：JM01S JM02S JM04S JM08S JM12MCOWEIS奥伟斯电源芯片: JM2575S-12 JM2575S-3.3 JM2575S-5.0 JM2575S-ADJ JM2575T-12 JM2575T-3.3JM2575T-5.0 JM2575T-ADJ JM2576S-12 JM2576S-3.3 JM2576S-5.0 JM2576S-ADJ JM2576T-12 JM2576T-3.3 JM2576T-5.0 JM2576T-ADJ LM2596S-12 LM2596S-3.3 LM2596S-5.0 LM2596S-ADJ LM2596T-12 LM2596T-3.3 LM2596T-5.0 LM2596T-ADJOWEIS奥伟斯接口芯片:JM485S JM3485S JM232S JM232TS JM3232S JM3232TS JM1040SOWEIS语音芯片：JM085S JM170S JM341S JM682S电源管理芯片:LM2575S-12 LM2575S-3.3 LM2575S-5.0 LM2575S-ADJ LM2575SX-12LM2575SX-3.3 LM2575SX-5.0 LM2575SX-ADJLM2575SX-12/NOPB LM2575SX-3.3/NOPB LM2575SX-5.0/NOPB LM2575SX-ADJ/NOPBLM2575T-12 LM2575T-3.3 LM2575T-5.0 LM2575T-ADJ LM2575T-12/NOPB LM2575T-3.3/NOPBLM2575T-5.0/NOPB LM2575T-ADJ/NOPB LM2575HVS-12 LM2575HVS-3.3 LM2575HVS-5.0LM2575HVS-ADJ LM2575HVSX-12 LM2575HVSX-3.3 LM2575HVSX-5.0 LM2575HVSX-ADJLM2575HVSX-12/NOPB LM2575HVSX-3.3/NOPB LM2575HVSX-5.0/NOPB LM2575HVSX-ADJ/NOPBLM2575HVT-12 LM2575HVT-3.3 LM2575HVT-5.0 LM2575HVT-ADJ LM2575HVT-12/NOPBLM2575HVT-3.3/NOPB LM2575HVT-5.0/NOPB LM2575HVT-ADJ/NOPB LM2576S-12 LM2576SX-12LM2576SX-5.0 LM2576SX-12/NOPB LM2576SX-3.3/NOPB LM2576SX-5.0/NOPB LM2576SX-ADJ/NOPB LM2576T-12 LM2576T-12/NOPB LM2576T-3.3/NOPB LM2576T-5.0/NOPBLM2576T-ADJ/NOPB LM2576HVS-12 LM2576HVS-3.3 LM2576HVS-5.0 LM2576HVS-ADJLM2576HVSX-12 LM2576HVSX-3.3 LM2576HVSX-5.0 LM2576HVSX-ADJ LM2576HVSX-12/NOPBLM2576HVSX-3.3/NOPB LM2576HVSX-5.0/NOPB LM2576HVSX-ADJ/NOPB LM2576HVT-12LM2576HVT-3.3 LM2576HVT-5.0 LM2576HVT-ADJ LM2576HVT-12/NOPB LM2576HVT-3.3/NOPBLM2576HVT-5.0/NOPB LM2576HVT-ADJ/NOPB LM2596S-12 LM2596SX-12 LM2596SX-3.3 LM2596SX-5.0LM2596SX-ADJ LM2596SX-12/NOPB LM2596SX-3.3/NOPB LM2596SX-5.0/NOPBLM2596SX-ADJ/NOPB LM2596T-12 LM2596T-12/NOPB LM2596T-3.3/NOPB LM2596T-5.0/NOPBLM2596T-ADJ/NOPB LM2596HVS-12 LM2596HVS-3.3 LM2596HVS-5.0 LM2596HVS-ADJLM2596HVSX-12 LM2596HVSX-3.3 LM2596HVSX-5.0 LM2596HVSX-ADJ LM2596HVSX-12/NOPBLM2596HVSX-3.3/NOPB LM2596HVSX-5.0/NOPB LM2596HVSX-ADJ/NOPB LM2596HVT-12 LM2596HVT-3.3LM2596HVT-5.0 LM2596HVT-ADJ LM2596HVT-12/NOPB LM2596HVT-3.3/NOPBLM2596HVT-5.0/NOPB LM2596HVT-ADJ/NOPB LM2576S-3.3TR LM2576S-5TR LM2576S-5.0TRLM2576S-12TR LM2576S-ADJTR LM2576T-3.3 LM2576T-5.0 LM2576T-12 LM2576T-ADJLM2575S-3.3TR LM2575S-5TR LM2575S-5.0TR LM2575S-12TR LM2575S-ADJTR LM2575T-3.3 LM2575T-5.0LM2575T-12 LM2575T-ADJ LM2596S-3.3TR LM2596S-5TR LM2596S-5.0TRLM2596S-12TR LM2596S-ADJTR LM2596T-3.3 LM2596T-5.0 LM2596T-12 LM2596T-ADJLM2576TV-ADJ LM2576TV-ADJG LM2576T-ADJ LM2576T-ADJG LM2576D2T-ADJ LM2576D2T-ADJGLM2576D2T-ADJR4 LM2576D2T-ADJR4G LM2576TV-3.3 LM2576TV-3.3G LM2576T-3.3LM2576T-3.3G LM2576D2T-3.3 LM2576D2T-3.3G LM2576D2T-3.3R4G LM2576D2TR4-3.3LM2576D2TR4-3.3G LM2576TV-005 LM2576TV-5G LM2576T-005 LM2576T-5G LM2576D2T-005LM2576D2T-5G LM2576D2T-5.0R4G LM2576D2T-005G LM2576D2TR4-005 LM2576D2TR4-5GLM2576TV-12 LM2576TV-12G LM2576TV-012G LM2576T-0120 LM2576T-012G LM2576D2T-012LM2576D2T-12G LM2596D2T-12R4G LM2576D2T-012G LM2576D2TR4-012 LM2576D2TR4-12GLM2576D2TR4-012G LM2576TV-15 LM2576TV-15G LM2576TV-015G LM2576T-015 LM2576T-15GLM2576T-015G LM2576D2T-015 LM2576D2T-15G LM2576D2T-015G LM2576D2TR4-015LM2576D2TR4-15G LM2576D2TR4-015G LM2596TVADJG LM2596TADJG LM2596DSADJGLM2596DSADJR4G LM2596D2T-3.3R4G LM2596D2T-5G LM2596D2T-5R4G LM2596T-3.3G LM2596T-5G LM2596-12G LM2575TV-ADJG LM2575T-ADJG LM2575D2T-ADJG LM2575D2T-ADJR4GNCV2575D2T-ADJG NCV2575D2T-ADJR4G LM2575TV-3.3G LM2575T-3.3G LM2575D2T-3.3GLM2575D2T-3.3R4G LM2575TV-5G LM2575T-5G LM2575D2T-5G LM2575D2T-5R4GNCV2575D2T-5G NCV2575D2T-5R4G LM2575TV-012G LM2575T-012G LM2575D2T-012GLM2575D2T-12R4G NCV2575D2T-12G NCV2575D2T-12R4G LM2575TV-015G LM2575T-015GLM2575D2T-015G LM2575D2T-15R4G LM2576-12BU LM2576-3.3BU LM2576-5.0BU LM2576BULM2576-12BT LM2576-3.3BT LM2576-5.0BT LM2576BT LM2576-12WU LM2576-3.3WU LM2576-5.0WU LM2576WU LM2576-12WU-TR LM2576-3.3WU-TR LM2576-5.0WU-TR LM2576WU-TRLM2576-12WT LM2576-3.3WT LM2576-5.0WT LM2576WT LM2596T-3.3 LM2596T-5.0 LM2596T-12LM2596T-ADJ LM2596TV-3.3 LM2596TV-5.0 LM2596TV-12 LM2596TV-ADJ LM2596R-3.3LM2596R-5.0 LM2596R-12 LM2596R-ADJ LM2576DP-5.0 LM2576DP-ADS LM2576T-3.3 LM2576T-5.0 LM2576T-12 LM2576T-ADJ LM2576R-3.3 LM2576R-5.0 LM2576R-12LM2576R-ADJ LM2575R-3.3 LM2575R-5.0 LM2575R-12 LM2575R-ADJP2576L-33-TA5-T P2576L-50-TA5-T P2576L-12-TA5-T P2576L-AD-TA5-TP2576L-33-TB5-T P2576L-50-TB5-T P2576L-12-TB5-T P2576L-AD-TB5-TP2576L-33-TQ5-R P2576L-50-TQ5-R P2576L-12-TQ5-R P2576L-AD-TQ5-RP2576L-33-TQ5-T P2576L-50-TQ5-T P2576L-12-TQ5-T P2576L-AD-TQ5-TP2576G-33-TA5-T P2576G-50-TA5-T P2576G-12-TA5-T P2576G-AD-TA5-TP2576G-33-TB5-T P2576G-50-TB5-T P2576G-12-TB5-T P2576G-AD-TB5-TP2576G-33-TQ5-R P2576G-50-TQ5-R P2576G-12-TQ5-R P2576G-AD-TQ5-RP2576G-33-TQ5-T P2576G-50-TQ5-T P2576G-12-TQ5-T P2576G-AD-TQ5-TP2576G-50-S08-R P2576G-12-S08-R P2576G-AD-S08-R P2576G-50-SH2-RP2576G-12-SH2-R P2576G-AD-SH2-R欧司朗发光二极管:LTW5SG-GZJX-35 LTW5SN LUWC9EN LUWC9EN-N4N6-EG LUWC9SMLUWC9SM-N1N3-EG LUWC9SP LUWC9SP-8K6L-EG LUWCHCP LUWCJSN LUWCJSN-GYHY-EULW-35LUWCN7M LUWCN7M-HYJY-EMKM-1 LUWCNAP LUWCPDP LUWCPDP-KULQ-5C8E-1 LUWCPDP-KULQ-5E8G-1 LUWCQ7P LUWCQ7P-LPLR-5C8E-1 LUWCQDP LUWCQDP-LQLS-MJMW LUWCRDP LUWCRDP-LSLU-MCML-1140… LUWE6SG LUWF65N LUWF65N-KYMX-5P7R LUWH9GP.CELUWH9GP.CE-KYLY-EMKM-1 LUWH9QP LUWH9QP-5M8M-HNJN-1 LUWHWQP LUWHWQP-8M7N-ebvF46fcbB46-8E8H LUWJDSH.EC LUWJDSH.EC-FTGP-5E8G-L1N2 LUWJDSI.PCLUWJDSI.PC-FTGP-5C8E-L1N2 LUWJNSH.PC LUWJNSH.PC-BUCQ-5E8G-1 LUWW5AM LUWW5AM-KZLY-6P7R LUWW5AP LUWW5AP-MYNY-4C8E LUWW5SM LUWW5SM-KXLX-4C8E LWA673LWA673-P1S1-5K8L LWA67C LWA67C-T2U2-5K8L LWA6SG LWA6SG-V2BA-JKPL LWC9ENLWC9EN-F0GB-58 LWC9SN LWC9SN-F0HA-58 LWE67C LWE6SC LWE6SC-U1V1-5K8L-1 LWE6SGLWE6SG-V2AB-5K8L-1 LWETSG LWETSG-AABB-JKPL-1 LWG6CP LWG6CP-EAFA-JKQL-1 LWL283LWM673 LWM673-P1Q2-3K6L LWM673-L1N1-JKPL LWM673-P1R2-FKPL LWM67C LWM67C-S1U2-5K8LLWP473 LWP473-Q2S1-3K8L-1 LWP4SG LWP4SG-V2AB-JKPL-1 LWQ38E LWQ38E-Q1S2-3K6L-1LWQ38G LWQ38G-Q2OO-3K5L-1 LWT673 LWT673-P1S1-5K8L LWT673-P1S1-FKPL LWT67CLWT67C-T2U2-5K8L LWT6SC LWT6SC-T2V1-5K8L LWT6SC-S2V1-5K8L LWT6SGLWT6SG-V1AA-FKKL LWT6SG-V2BA-5K8L LWTTSD LWTTSD-U2V2-JKPL-1 LWVG8E LWW5AMLWW5AM-KYLX-5K8L LWW5PM LWW5PM-KXKZ-5K8L LWW5SM LWW5SM-KXLX-JKQL-24E4LYA67F LYA67F-U2AB-36 LYE65F LYE65F-DBFA-46-3B5A LYE65F-DAEA-35-3B5A LYG6SPLYG6SP-CADB-36-1 LYG6SP-CBEB-36-3B5A LYL196 LYM676 LYM676-Q2T1-26LYM676-Q2S1-26 LYM67K LYM67K-J1L2-26 LYP47B LYP47B-T2V1-26-1 LYT66FLYT66F-ABBB-4D-1-20 LYT66F-ABCA-46-3A4B LYT66F-ABBB-35-3A4B LYT676 LYT676-R1S2-26 LYT676-R1T1-26 LYT67F LYT67F-U1AA-36-1 LYT67K LYT67K-J2M1-26LYT686 LYT686-Q2T1-26 LYT68B LYW5AP LYW5AP-KYLZ-36 LYW5SM SFH4232A ZYT676ADS触摸芯片：TQ01 TS01Q TQ02 TH01TS01S AWS01 TS02NT TS04 TS06 TS08NT TS08NC TS08NE TS08P TS12 TSM12S TSM12MC TSM16C TS20博晶微/晶尊微触摸芯片:SC01A SC02A SC04A SC05A SC09A SC12ATTP233B-HA6 TTP233C-BA6 TTP233C-HA6 TTP233D-HA6 TTP233D-BA6 TTP233D-QA6 TTP233D-MA6 TTP233D-RB6 TTP233D-SB6 TTP239-BSF TTP239-COBN TTP223E TTP223E-BA6 TTP223E-CA6 TTP223E-HA6 TTP233F-QA6TTP226-809SN TTP259-ASFN TTP229-AQG TTP229-BSF TTP229-LSFN TTP229-KSFN TTP232-BA6 TTP232-CA6 TTP224B TTP224B-BSBN TTP224B-BSBN TTP224B-COBN TTP224B-COBN TTP224B-SQBN TTP224B-RO8N TTP224B-BCBN TTP224B-RC8N TTY6952B合泰触摸控制芯片：BS801B BS801C BS802B BS802C BS804B BS804C BS806B BS806C BS808B BS808CBS83A04A-3 BS83B08-3 BS83B08A-3 BS83B08A-4 BS83A02A-4 BS83A02A-4 BS83A02A-4 BS83A04A-3BS83A04A-4 BS83B08A-3 BS83B08A-4 BS83B12A-3 BS83B12A-3 BS83B12A-4 BS83B12A-4 BS83B16A-3BS83B16A-3 BS83B16A-4 BS83B16A-4 BS82B12A-3 BS82C16A-3 BS82D20A-3 BS83A01C BS83A02C BS83B04CBS83B08C BS83B12C BS83B16C BS83B24C BS83C40C BS83B08-3 BS83B12-3 BS83B16-3 BS83C24-3 BS83C24-3 BS84B08A-3 BS84B08A-3 BS84B08A-3 BS84B08A-3 BS84B08A-3 BS84B08A-3 BS84C12A-3 BS84C12A-3BS84C12A-3 BS84C12A-3 BS84C12A-3 BS84C12A-3低功耗单片机:STM8L052C6T6 STM8L052R8T6 STM8L152C6T6 STM8L152R8T6 STM32L151C8T6 STM32L152RBT6 STM32L051C8T6指纹识别芯片:AS608 QS808马达驱动芯片:MX08E L9110S BA6287F-E2显示驱动芯片:74HC595PW 74HC164PW刷卡芯片:MFRC52202HN1/RC522 MFCV520/CV520 FM17520 FM17522 MS520 MS522时针芯片:PCF8563T AIP8536 IN1363DT VC8563T DQ8563T存储芯片:W25Q32JVSSIQ W25Q32BVSSIG W25Q32FVSSIG AT24C32D-SSHM-T GD25Q32BSIG GD25Q32CSIG FM25Q32 FM24C32语音芯:AP23085 AP23341 AP89085 AP89341K低压MOS管:SI2300 SI2301 SI2302 AO3400 AO3401 AO3402TVS二极管:SMAJ6.0CA SMAJ15CACAN收发器：TJA1040T TJA1042T TJA1043T TJA1044T TJA1050T TJA1051T TJA1052T TJA1053T MCP2515-I/SO MCP2515T-I/SO MCP2515-I/ST MCP2515T-I/ST网络接口芯片：MAX485ESA MAX485EESA MAX485CSA MAX485ED ST3485EBDR ST3485ECDR ADM485ARZADM485EARZ SP485EN SP485EEN ILX485DT MAX4853ESA MAX3485EESA MAX3485CSA ST3485EBDRST3485ECDR ADM3485ARZ ADM3485EARZ SP3485EN SP3485EEN ILX3485DT MAX232ESE MAX232EESEMAX232CSE MAX232DR MAX232IDR MAX232EIDR ST232BDR ST232CDR ST232EBDR ST232ABDR ADM232AARNZ ADM232AARW ADM232LAR SP232ECN SP232EEN ILX232DT MAX232EIPWR ST232BTR ST232ABTR ST232CTRST232ACTR MAX3232ESE MAX3232EESE MAX3232CSE MAX3232CDR MAX3232ECDR MAX3232IDR MAX3232EIDR ST3232CDR ST3232BDR ST3232EBDR ST3232ECDR ADM3232EARN SP3232EEN ILX3232DT MAX3232EEAE ST3232CTR ST3232BTR ST3232EBTR ST3232ECTR ADM3232EARUZ SP3232EEA SP3232EEYILX3232TSDT电源管理芯片：LM2575 LM2576 LM2596 IL2576 IL2596 XL2596 XL2576 TD2576 TD2596ADI模数转换器:AD7705BRZ AD7705BURZ AD7706BRZ AD7706BURZ AD7715ANZ-3 AD7715ANZ-5 AD7715ARZ-3REEL AD7715ARZ-5REELAMS奥地利微低频唤醒芯片:AS3933-BTST AS3933-BQFTCKS中科芯单片机:CKS32F030K6T6 CKS32F030C8T6 CKS32F051C8T6 CKS32F051R8T6 CKS32F103C8T6CKS32F103R8T6聚洵运算放大器：聚洵零漂移运算放大器GS8592-SR GS8592-MR GS8594-TR GS8594-SR GS6554-TR GS6554-SR GS6552-SR GS6552-MR GS6551-CR GS6551-TR GS8551-TR GS8551-SR GS8552-SR GS8552-MR GS8554-TR GS8554-SR GS8331-TR GS8331-CR GS8331-SR GS8331Y-TR GS8331Y-CR GS8332-SR GS8332-MR GS8332-FR GS8334-TR GS8334-SR聚洵高速运算放大器：GS8091-CR GS8091-TR GS8091N-CR GS8091N-TR GS8092-SR GS8092-MR GS8092N-MR GS8094-TR GS8094-SR GS8054-TR GS8054-SR GS8052N-MR GS8052-SR GS8052-MR GS8051N-CRGS8051N-TR GS8051-CR GS8051-TR优势产品未尽详细，欢迎来电查询！！！优势产品未尽详细，欢迎来电查询！！！。
国电南瑞TH9310 20 系列仪器用户手册说明书
V2.2目录第1章安装使用 _________________________________________________ 1-11.1使用注意事项___________________________________________________________________ 1-11.2移动时的注意要点________________________________________________________________ 1-11.3连接交流电源线__________________________________________________________________ 1-21.4接地___________________________________________________________________________ 1-21.5操作检查_______________________________________________________________________ 1-31.6仪器的其它特性__________________________________________________________________ 1-3 第2章操作规范和措施 ___________________________________________ 2-12.1禁止的操作行为__________________________________________________________________ 2-12.2紧急情况的处理__________________________________________________________________ 2-12.3测试中的预防措施________________________________________________________________ 2-12.4高压测试警告___________________________________________________________________ 2-22.5有故障仪器的危险状态处理________________________________________________________ 2-32.6保证长时间无故障使用的条件______________________________________________________ 2-32.7日常检查_______________________________________________________________________ 2-3 第3章仪器面板概述 _____________________________________________ 3-13.1前面板说明_____________________________________________________________________ 3-13.1.1电源开关(POWER) _____________________________________________ 3-13.1.2 START键、STOP键 ___________________________________________ 3-13.1.3商标及型号___________________________________________________ 3-13.1.4 USB接口 ____________________________________________________ 3-13.1.5指示灯区域___________________________________________________ 3-13.1.6功能区域（FUNCTION） _______________________________________ 3-13.1.7 HV __________________________________________________________ 3-23.1.8输出电压高端（HV） __________________________________________ 3-23.1.9测试低端、测试电流返回端(LOW /RET) ___________________________ 3-23.1.10移动键______________________________________________________ 3-23.1.11快捷功能键 __________________________________________________ 3-23.1.12 COPY键 ____________________________________________________ 3-23.1.13 LCD液晶显示屏 _____________________________________________ 3-23.2后面板说明_____________________________________________________________________ 3-33.2.1功放风扇散热口_______________________________________________ 3-33.2.2测试低端、测试电流返回端（选件） _____________________________ 3-33.2.3高压输出端（选件）___________________________________________ 3-33.2.4电源插座：自带保险丝盒，可切换线电压模式。
凌力尔特推出1.5WDC／DCμModule转换器
这 些 器 件 集 成 有 一 个 前 置 放 大 器 、 压 降 稳 压 器 低 （ Ｄ 和模 数 转 换 器 （ Ｄ ） 其 中 模 数 转 换 器 将 驻 极 体 Ｌ Ｏ） Ａ Ｃ ， 电容 式 麦 克 风 （ Ｃ ） 出 转 换 成 数 字 脉 冲 密 度 调 制 Ｅ Ｍ 输
（ ＤＭ） 据 流 ， 现 先 进 的 噪 声 抑 制 能 力 和 简 便 的 手 机 Ｐ 数 实 处 理器 接 口 ， 而 获 得 更 好 的音 质 。 从 ＦＡＮ３ ５ Ａ 备 有 １ ｄ 和 １ ｄ 增 益 两 种 型 款 。 ８０ ６ Ｂ ９ Ｂ Ｆ ＡＮ３ ５ Ｔ 具 有 １ Ｂ增 益 并 带 有 集 成 负 温 度 系 数 以 补 ８Ｏ ５ｄ 偿Ｅ ＣＭ 正 温 度 系 数 ， 以便 在 整 个 温 度 范 围 内获 得 平 坦 的
收 发 器 集 成 到 单 芯 片 解 决 方 案 中 ， 别 适 合 同 时需 要 超 低 特 功 耗 和业 内领 先 Ｒ Ｆ性 能 的 电 池 供 电 嵌 入式 系统 。
Ａ 推 出战术 级 １ ＤＩ ０自由度 ＭＥ ＭＳＩ ＭＵ
Ａｎ ｌｇＤｅ ｉｅ ， ｎ ． 面 推 出第 三 代 ｉｅ ｓｒＭＥＭＳ ａｏ ｖｃｓ Ｉ ｃ 全 Ｓ ｎ ｏ Ｉ ＭＵ（ 性 测 量 单 元 ） 惯 ＡＤＩ １ ４ ８ 这 是 一 款 战 术 级 １ 自 Ｓ６８ ， ０
析设 备 的设计 。新 款 高精度 Ｄ Ｃ 内置集 成 式精 密 基 准 电压 Ａ
调理 电路 ， 可供 系统立 即使 用 ， 而大 大缩减 电路 板 空间 。 从 ＡＤ５ ９ ７ Ｏ和 ＡＤ５ ８ ７ ０ＤＡＣ的 高 线 性 度 和 低 噪 声 减 少 了校 准 系 统 非 线 性 度 或 对 多 个 测 量 求 时 间 平 均 值 的 需 要 。 转 换 器 在 整 个 时 间 和 温 度 范 围 内保 持 高 稳 定 性 和 低 漂 移 ， 减 少 了补 偿 系 统 老 化 和 温 度 效 应 的 需 要 。这 些 特 性 的 结
具备有源电流限制功能的微型模块电池充电器
组 ，但 只要 采用具 动态 电压ห้องสมุดไป่ตู้ 整功 能的
Ｌ ３９ 芯 片 ，便 可利 用同 一款 驱动 器 ， Ｍ ４２
驱 动 多款 大 小 不 同 的 显 示 器 ，这 样 可 节 省 开 发时 间以 及降 低 系统 的 总 体成 本 。
｝
Ｌ ＴＭ８ ６ 和Ｌ ０ １ ＴＭ８ ６ 就 自动启动再充 ０２
Ｌ ４ ２ 片 具 有 多 功 能 ＣＯＭ Ｍ引 Ｍ３ ９ 芯
ｈｔ ／ｗｗｗ． ｔ ／ ｐ： ｐｏｗｅ ｉ ｔ ｏｍ ｒｎ ． ｃ
电周期。安全功能包括 坏电池检测和具 脚 ，它可作为连接 外置微控制器（ ＣＵ） Ｍ 故障指示 并适用于Ｌ Ｄ的ＮＴＣ电阻器输 的 双 向输 入 ／ 出 引 脚 ， 实 现 指 令 与 诊 Ｅ 输
能 ，以避免 电源轨 电压 下降并向负载输 出功率 最 高 可达 １ Ｗ ，输 出电压 可达 模式 下 ，Ｌｉ Ｚｅ ｏ ＡＸ并没 有 终 止 工 ５ ｎｋ ｒ —
送最大的充电电流 。Ｌ ＴＭ８６ 可主动地 ６ Ｖ。 由于其 内置的稳 流器转换效 率极 作 ，通过 复 位 脉 冲 或 按 键操 作 即可 将 Ｉ ０２ ５ Ｃ 管理输 出充 电电流 ，尽 量增加从一个运 高 ，因此 系 统 可以 利 用高 频 、 窄脉 冲 唤醒。Ｌ ｎ Ｚ ｒ —ＡＸ ｃ ｉｋ ｅ ｏ Ｉ 上的旁路 引脚 用最大峰值功率跟 踪（ ＭＰＰＴ） 原理的太 宽 度 的调 光 信 号 实 现 ｌ０ ： 的超 高 对 比 还 可 提供 高达 ５ ０ Ａ的 电 流 ，供 任 何 系 Ｏ０１ ０
入 。 当 电源 不 存 在 时 ，内 部 输 人 反 向 电 断功 能 。
36V、5A微型模块稳压器LTM8026
36V、5A微型模块稳压器LTM8026
佚名
【期刊名称】《电源技术应用》
【年(卷),期】2012(36)4
【摘要】凌力尔特公司推出36V输入、5A降压型微型模块（汕Module）稳压器LTM8026，该器件具可调和精准（±10％）的电流限制。
该电流限制使设计师能设定从电源吸取的最大功率，从而防止由过流状况引起的输入电压下降。
当配置多个LTM8026使其输出连接在一起时，能给每个转换器设置一个独特的最大电流限值，以满足其旨在提供更大输出功率的特定输入电源限制，这种方法被称为“不对称功率均分”。
与此不同，常见的稳压器则必须进行电流均分，这是一种由每个输入电源对负载输送均等功率的功能电路，其受限于供电能力最弱的那个输入电源轨。
LTM8026的应用包括面向汽车、医疗及工业终端市场并采用24V和12V电源（例如：VXI总线）之系统中的负载点调节。
【总页数】1页(PI0007-I0007)
【正文语种】中文
【中图分类】TM44
【相关文献】
1.36V、5A微型模块稳压器保护输入电源免受过流状况影响,并支持非对称功率均分 [J],
2.36V、8A降压型微型模块稳压器 [J],
3.EMC兼容、1A、36V DC／DC微型模块稳压器 [J],
4.采用15mmx15mm BGA封装的60V/4A和36V/8A降压-升压型微型模块稳压器 [J],
5.凌力尔特推出EMC兼容、1A、36V DC/DC微型模块稳压器 [J],
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180KHz 36V 5A开关电流降压型DC-DC转换器 XL4015说明书
180KHz 36V 5A 开关电流降压型DC-DC转换器XL4015特点⏹8V到36V输入电压范围⏹输出电压从1.25V到32V可调⏹最大占空比100%⏹最小压降0.3V⏹固定180KHz开关频率⏹最大5A开关电流⏹内置功率MOS⏹效率高达96%⏹出色的线性与负载调整率⏹内置热关断功能⏹内置限流功能⏹内置输出短路保护功能⏹TO263-5L封装应用⏹LCD电视与显示屏⏹便携式仪器电源⏹通讯设备供电描述XL4015是一款高效降压型DC-DC转换器，固定180KHz开关频率, 可以提供最高5A输出电流能力，具有低纹波，出色的线性与负载调整率特点。
XL4015内置固定频率振荡器与频率补偿电路，简化了电路设计。
PWM控制环路可以调节占空比从0~100%之间线性变化。
内置输出过电流保护功能。
当输出短路时，频率由180KHz降至48KHz。
内部补偿模块可以减少外围元器件数量。
图1.XL4015封装180KHz 36V 5A 开关电流降压型DC-DC 转换器 XL4015引脚配置VIN SW FB GNDVC 12345TO263-5LMetal Tab SW图2. XL4015引脚配置表1.引脚说明引脚号 引脚名称 描述1 GND 接地引脚。
2 FB 反馈引脚，通过外部电阻分压网络，检测输出电压进行调整，参考电压为1.25V 。
3 SW 功率开关输出引脚，SW 是输出功率的开关节点。
4 VC 内部电压调节器旁路电容引脚，需要在VIN 与VC 引脚之间连接1个1uF 电容。
5 VIN电源输入引脚，支持DC8V~36V 宽范围电压操作，需要在VIN 与GND 之间并联电解电容以消除噪声。
180KHz 36V 5A 开关电流降压型DC-DC 转换器 XL4015方框图EAGNDFB3.3V1.25VEA COMPOscillator180KHz/48KHz3.3V Regulator1.25V Reference Start UpLatchCOMP2COMP1DriverThermal ShutdownVINVCSW220mV 200mV28m ΩCurrent LimitPower PMOS1:100020K Ω3.3nFOSP图3. XL4015方框图典型应用XL4015CIN220uF/50VCOUT330uF/25VR210KR13.3KD1MBRD1045GC1105C21055312VIN4VOUT=1.25*(1+R2/R1)VIN VCSWGNDFBCC 105CFF 33nFVOUT图4. XL4015系统参数测量电路 (VIN=8V~36V, VOUT=5V/5A)180KHz 36V 5A开关电流降压型DC-DC转换器XL4015订购信息产品型号打印名称封装方式环保认证包装类型XL4015E1 XL4015E1 TO263-5L RoHS & HF 800只每卷绝对最大额定值（注1）参数符号值单位输入电压Vin -0.3到40 V反馈引脚电压V-0.3到7 VFB-0.3到Vin V输出开关引脚电压VSW内部限制mW功耗PD热阻(TO263-5L)R JA30 o C /W (结到环境，无外部散热片)操作结温T-40到125 o CJ-65到150 o C贮存温度范围TSTG260 o C引脚温度(焊接10秒) TLEADESD (人体模型) >2000 V注1:超过绝对最大额定值可能导致芯片永久性损坏，在上述或者其他未标明的条件下只做功能操作，在绝对最大额定值条件下长时间工作可能会影响芯片的寿命。
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LTM8025 - 36V、3A 降压型μModule转换器
描述：
LTM®8025是一款36VIN、3A 降压型μModule®转换器。
封装中内置了开关控制器、电源开关、电感器以及所有的支持元件。
LTM8025 可一个在3.6V 至36V 的输入电压范围内运作，支持一个0.8V 至24V 的输出电压范围和一个200kHz 至 2.4MHz 的开关频率范围(各由单个电阻器来设定)。
仅需采用大容量的输入和输出滤波电容器便可实现完整的设计。
由于采用了扁平的封装(高度仅 4.32mm)，因而可以利用PC 板底部的未用空间，以实现高密度负载点调节。
LTM8025 采用耐热增强型的紧凑(15mm x 9mm)、扁平(高度仅4.32mm) 模压树脂焊盘网格阵列(LGA) 封装，适合采用标准的表面贴装设备来进行自动化装配。
LTM8025 符合RoHS 标准。
特点：
·完整的降压型开关模式电源
·宽输入电压范围：3.6V 至36V
·高达3A 的输出电流
·可通过并联来增加输出电流
·0.8V至24V 输出电压范围
·可选开关频率：200kHz 至2.4MHz
·电流模式控制
·具有金制衬垫涂层并符合RoHS 标准的无铅型(e4) 封装
·可编程软起动
·纤巧和扁平(15mm x 9mm x 4.32mm) 的表面贴装型LGA 封装。