MIC2981BN中文资料
mic29302中文资料_数据手册_参数
May 2010
M9999-050510-B
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MIC29300-5.0WT(2)
MIC29300-5.0BU
MIC29300-5.0WU(2)
MIC29300-12BT
MIC29300-12WT(2)
MIC29300-12BU
MIC29300-12WU(2)
MIC29301-3.3BT
MIC29301-3.3WT(2)
MIC29301-3.3BU
MIC29151-5.0BT
MIC29151-5.0WT(2)
MIC29151-5.0BU
MIC29151-5.0WU(2)
MIC29151-12BT
MIC29151-12WT(2)
MIC29151-12BU
MIC29151-12WU(2)
MIC29152BT
MIC29152WT(2)
MIC29152BU
Junction Temp. Range(1)
–40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C
雷卡生物系统氨氨酸酶活性试验试剂盒说明书
Leica IP C
3
目录
1. 重要信息 ............................................................................................................................................... 6
4. 仪器安装 .............................................................................................................................................26
以印刷、影印、缩影、网络摄像或其他方法 — 包括任何电子系统和媒介 — 复制本文档的 文本和插图 (或其任何部分) 需要事先征得 Leica Biosystems Nussloch GmbH 的明确书面许可。
欲知仪器序列号和制造年份，请参阅仪器背面的铭牌。
Leica Biosystems Nussloch GmbH Heidelberger Str. 17 - 19 69226 Nussloch Germany 电话： +49 - (0) 6224 - 143 0 传真： +49 - (0) 6224 - 143 268 网站：
4.1 安装地要求..........................................................................................................................................................................26 4.2 仪器拆箱 ...............................................................................................................................................................................26 4.2.1 安装打印机..........................................................................................................................................................................28 4.3 标准配置 ...............................................................................................................................................................................29 4.4 安装手动卸载站点...........................................................................................................................................................30 4.5 自动卸载站点 (选配) .......................................................................................................................................................31 4.6 安装/更换闪光灯泡 .........................................................................................................................................................32 4.7 填充和插入储存条...........................................................................................................................................................35 4.8 电气连接 ...............................................................................................................................................................................40 4.9 将运输墨盒更换为油墨墨盒 ......................................................................................................................................41 4.10 安装打印机驱动程序......................................................................................................................................................48
杰尼斯特压力传感器产品说明书
0 to 50.0 inH2O 0 to 12.5 kPa PX291-050WD5V 180 PX291-050WDI 180 15 psid 1.0 bar DP41-E, DP25B-E, DP24-E
0 to 100.0 inH2O 0 to 24.9 kPa PX291-100WD5V 180 PX291-100WDI 180 15 psid 1.0 bar DP41-E, DP25B-E, DP24-E
0 to 5.0 inH2O 0 to 1.25 kPa PX291-005WD5V 180 PX291-005WDI 180 5 psid 0.34 bar DP41-E, DP25B-E, DP24-E
0 to 10.0 inH2O 0 to 2.49 kPa PX291-010WD5V 180 PX291-010WDI 180 5 psid 0.34 bar DP41-E, DP25B-E, DP24-E
are no moving parts and the transducers are virtually position insensitive. The span and zero
4.8 (0.19) DIA. 2 HOLES
COM Vsup Vout
PRESSURE LO HI
38 (1.50)
Voltage Output Models: 0 to 5 Vdc 3-wire, source or sink 3.5 mA, short circuit protected, current draw = 10 mA
Current Output Models: 4 to 20 mA, output limited to approximately 3.85 mA at low end and 25 mA at high end
MiCOKit 硬件手册说明书
HED Documentation Working Group (HDWG) Andy Liu Track Number: MXCHIP Co., Ltd Version: 1.1 2017.7.3 Category: Reference Manual OpenMiCOKit硬件手册摘要（Abstract）本文档主要描述MiCOKit系列开发套件的硬件组成及各功能模块电路原理图，旨在为MiCO-IoT物联网开发者提供与硬件相关的技术参考。
适用对象（Suitable Readers）本文适合MiCOKit-3166以及相关扩展板，旨在让开发者在使用EMW3166时参考。
版本更新说明日期修改人版本更新内容2017-6-29 Andy Liu V1.0 1. 初始版本2017-7-3 杜松V1.1 增加第三章MiCOKit-3166扩展板详解内容目录MiCOKit硬件手册 (1)版本更新说明 (1)1.MiCOKit系列开发套件概述 (4)1.1.硬件 (4)1.2.软件 (5)1.3.开发者支持 (5)2.MiCOKit-3166主板详解 (6)2.1.电源 (7)B转UART (7)2.3.W I-F I模块型号 (8)2.3.1 MiCOKit-3166之Wi-Fi模块 (8)2.4.LED指示灯 (9)2.5.运行状态选择 (9)2.6.按键 (10)2.7.JTAG调试接口 (10)2.8.A RDUINO接口 (11)2.9.电路图 (12)3.MiCOKit-3166扩展板详解 (14)3.1.OLED显示屏 (15)3.2.RGB三色LED (15)3.3.环境传感器（选配） (16)3.4.九轴运动传感器（选配） (17)3.5.苹果认证芯片（选配） (17)3.6.距离、光照传感器 (18)3.7.温湿度传感器 (19)3.8.红外反射开关 (19)3.9.光照传感器 (20)3.10.微型直流电动机 (20)3.11.标准A RDUINO接口 (21)3.12.A RDUINO传感器接口 (21)3.13.UART接口 (22)图目录图 1.1 EMW3166开发套件 (4)图 2.1 主板功能模块示意图 (6)图 2.2 电源电路原理图 (7)图2.3 USB转UART部分电路原理图 (8)图2.4 USB转出来的串口 (8)图2.5 EMW3166模块 (9)图2.6 LED指示灯原理图 (9)图2.7 按键部分原理图 (10)图 2.8 JTAG接口部分原理图 (11)图 2.9 Arduino接口部分原理图 (11)图3.1 MiCOKit扩展板功能图 (14)图3.2 OLED显示屏电路原理图 (15)图 3.3 RGB驱动电路原理图 (16)图 3.4 P8913驱动时序图 (16)图 3.5 环境传感器电路原理图 (17)图 3.6 九轴运动传感器电路原理图 (17)图 3.7 苹果CP芯片电路原理图 (17)图 3.8 距离、光照检测电路原理图 (18)图 3.9 温湿度电路原理图 (19)图 3.10 DHT11时序图 (19)图 3.11 红外反射电路原理图 (20)图 3.12 光照传感器电路原理图 (20)图 3.13 直流电机电路原理图 (21)图 3.14 扩展板Arduino电路原理图 (21)图 3.15. Arduino传感器接口电路原理图 (21)图 3.16 UART接口电路原理图 (22)表目录表 2.1 工作模式选择 (10)1.MiCOKit系列开发套件概述MiCOKit EMW3166是上海庆科（MXCHIP）推出的基于物联网操作系统（MiCO）系列开发套件，可用于物联网、智能硬件的原型机开发。
LP2981_08资料
FEATURES PORTABLE APPLICATIONSDBV (SOT-23) PACKAGE(TOP VIEW)OUTNC − No connect; must be left openDESCRIPTION/ORDERINGINFORMATIONLP2981100-mA ULTRA-LOW DROPOUT REGULATORWITH SHUTDOWNSLVS521E–JULY2004–REVISED MARCH2008•Mobile Phones•Output Tolerance of•Laptops–0.75%(A Grade)•Personal Digital Assistants(PDAs)– 1.25%(Standard Grade)•Digital Cameras and Camcorders •Ultra-Low Dropout,Typically•CD and MP3Players–200mV at Full Load of100mA–7mV at1mA•Wide V IN Range…16V Max•Low I Q…600µA Typ at Full Load of100mA•Shutdown Current…0.01µA Typ•Fast Transient Response to Line and Load•Overcurrent and Thermal Protection•High Peak Current Capability•ESD Protection Exceeds JESD22–2000-V Human-Body Model(A114-A)–200-V Machine Model(A115-A)The LP2981family of fixed-output,low-dropout regulators offers exceptional,cost-effective performance for both portable and nonportable applications.Available in fixed voltages of2.8V,3V,3.3V,and5V,the family has an output tolerance of0.75%for the A-grade devices(1.25%for the standard grade)and is capable of delivering 100-mA continuous load current.Standard regulator features,such as overcurrent and overtemperature protection,are included.The LP2981has features that make the regulator an ideal candidate for a variety of portable applications:•Low dropout:A PNP pass element allows a typical dropout of200mV at100-mA load current and7mV at 1-mA load.•Low quiescent current:The use of a vertical PNP process allows for quiescent currents that are considerably lower than those associated with traditional lateral PNP regulators.•Shutdown:A shutdown feature is available,allowing the regulator to consume only0.01µA when the ON/OFF pin is pulled low.•Small packaging:For the most space-constrained needs,the regulator is available in the SOT-23package.Please be aware that an important notice concerning availability,standard warranty,and use in critical applications ofTexas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.元器件交易网LP2981100-mA ULTRA-LOW DROPOUT REGULATOR WITH SHUTDOWNSLVS521E–JULY 2004–REVISED MARCH 2008ORDERING INFORMATION (1)V OUT ORDERABLE TOP-SIDE T JPART GRADEPACKAGE (2)(NOM)PART NUMBER MARKING (3)Reel of 3000LP2981A-28DBVR 2.8V LP6_Reel of 250LP2981A-28DBVT Reel of 3000LP2981A-29DBVR 2.9VLRB_Reel of 250LP2981A-29DBVT Reel of 3000LP2981A-30DBVR A grade:3V LP8_0.75%toleranceReel of 250LP2981A-30DBVT Reel of 3000LP2981A-33DBVR 3.3V LPC_Reel of 250LP2981A-33DBVT Reel of 3000LP2981A-50DBVR 5VLPE_Reel of 250LP2981A-50DBVT –40°C to 125°CSOT-23-5–DBVReel of 3000LP2981-28DBVR 2.8V LP5_Reel of 250LP2981-28DBVT Reel of 3000LP2981-29DBVR 2.9VLP3_Reel of 250LP2981-29DBVT Reel of 3000LP2981-30DBVR Standard grade:3V LP7_1.25%toleranceReel of 250LP2981-30DBVT Reel of 3000LP2981-33DBVR 3.3V LPB_Reel of 250LP2981-33DBVT Reel of 3000LP2981-50DBVR 5VLPD_Reel of 250LP2981-50DBVT(1)For the most current package and ordering information,see the Package Option Addendum at the end of this document,or see the TI web site at .(2)Package drawings,thermal data,and symbolization are available at /packaging .(3)The actual top-side marking has one additional character that site.元器件交易网V INGNDON/OFFV OUT LP2981100-mA ULTRA-LOW DROPOUT REGULATORWITH SHUTDOWNSLVS521E–JULY2004–REVISED MARCH2008FUNCTIONAL BLOCK DIAGRAMBASIC APPLICATION CIRCUITA.Minimum C OUT value for stability(can be increased without limit for improved stability and transient response)B.ON/OFF must be actively terminated.Connect to V IN if shutdown feature is not used.C.Pin4(NC)must be left open.Do not connect anything to this pin.Figure1.元器件交易网Absolute Maximum Ratings (1)Recommended Operating ConditionsLP2981100-mA ULTRA-LOW DROPOUT REGULATOR WITH SHUTDOWNSLVS521E–JULY 2004–REVISED MARCH 2008over virtual junction temperature range (unless otherwise noted)MINMAX UNIT V IN Continuous input voltage range –0.316V V ON/OFF ON/OFF input voltage range –0.316V V OOutput voltage range (2)–0.39V V IN –V OUT Input/output voltage differential range (3)–0.316VInternally limited I OUT Output current (4)(short-circuit protected)θJA Package thermal impedance (4)(5)206°C/W T J Operating virtual junction temperature 150°C T stg Storage temperature range –65150°C Human-Body Model (HBM)2000ESD Electrostatic discharge protectionVMachine Model (MM)200(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 under "recommended operating conditions"is not implied.Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.(2)If load is returned to a negative power supply,the output must be diode clamped to GND.(3)The PNP pass transistor has a parasitic diode connected between the input and output.This diode normally is reverse biased(V IN >V OUT ),but will be forward biased if the output voltage exceeds the input voltage by a diode drop (see Application Information for more details).(4)Maximum power dissipation is a function of T J (max),θJA ,and T A .The maximum allowable power dissipation at any allowable ambient temperature is P D =(T J (max)–T A )/θJA .Operating at the absolute maximum T J of 150°C can affect reliability.(5)The package thermal impedance is calculated in accordance with JESD 51-7.MINMAX UNIT V IN Supply input voltage 2.2(1)16V V ON/OFF ON/OFF input voltage 0V IN V V IN –V OUT Input-output differential 0.711V I OUT Output current100mA T J Virtual junction temperature–40125°C(1)Minimum V IN of 2.2V is needed for proper biasing of LDO control circuitry.元器件交易网Electrical CharacteristicsLP2981100-mA ULTRA-LOW DROPOUT REGULATORWITH SHUTDOWNSLVS521E–JULY 2004–REVISED MARCH 2008at specified free-air temperature range,V IN =V OUT(NOM)+1V,V ON/OFF =2V,C IN =1µF,I L =1mA,C OUT =4.7µF (unless otherwise noted)LP2981A-xx LP2981-xx PARAMETERTEST CONDITIONS T A UNITMIN TYPMAX MIN TYPMAX I L =1mA25°C –0.750.75–1.25 1.25Output voltage ΔV OUT25°C –11–22%V NOM tolerance I L =1mA to 100mA –40°C to 125°C–2.52.5–3.53.525°C 0.0070.0140.0070.014Output voltage V IN =(V OUT(NOM)+1V)to ΔV OUT /ΔV IN%/V line regulation16V –40°C to 125°C0.0320.03225°C 1313I L =0–40°C to 125°C5525°C 710710I L =1mA –40°C to 125°C1515Dropout V IN –V OUTmV voltage (1)25°C 7010070100I L =25mA –40°C to 125°C15015025°C 200250200250I L =100mA –40°C to 125°C37537525°C 65956595I L =0–40°C to 125°C12512525°C 8011080110I L =1mA –40°C to 125°C17017025°C 200300200300I L =25mA–40°C to 125°C550550Ground pin V OUT =25°C 600800600800I GNDµA current2.8V,3V,–40°C to 125°C150015003.3V I L =100mA25°C 60010006001000V OUT =2.9V,5V–40°C to 125°C17001700V ON/OFF <0.3V (OFF)25°C 0.010.80.010.8–40°C to 105°C 0.0520.052V ON/OFF <0.15V (OFF)–40°C to 125°C5525°C 1.41.4High =O/P ON–40°C to 125°C1.61.6ON/OFF input V ON/OFFVvoltage (2)25°C 0.50.5Low =O/P OFF –40°C to 125°C0.150.1525°C 0.010.01V ON/OFF =0–40°C to 125°C–1–1ON/OFF input I ON/OFFµAcurrent25°C 55V ON/OFF =5V–40°C to 125°C1515Peak output I OUT(PK)V OUT ≥V OUT(NOM)–5%25°C 150400400mA current Output noise BW =300Hz to 50kHz,V n25°C 160160µV voltage (RMS)C OUT =10µFΔV OUT /ΔV IN Ripple rejection f =1kHz,C OUT =10µF 25°C 6363dB Short-circuit I OUT(MAX)R L =0(steady state)25°C150150mAcurrent(1)Dropout voltage is defined as the input-to-output differential at which the output voltage drops 100mV below the value measured with a 1-V differential.This dropout specification does not apply to the 1.8-V option,as the minimum V IN =2.2V must be observed for proper biasing of LDO control circuitry.(2)The ON/OFF input must be actively terminated.Connect to V IN if this function is not used (see Application Information ).元器件交易网APPLICATION INFORMATIONCapacitorsInput Capacitor (C in )Output Capacitor (C out )E S R − ΩLoad Current − mAE S R − ΩLoad Current − mAE S R − ΩLoad Current − mAE S R − ΩLoad Current − mALP2981100-mA ULTRA-LOW DROPOUT REGULATOR WITH SHUTDOWNSLVS521E–JULY 2004–REVISED MARCH 2008A minimum value of 1µF (over the entire operating temperature range)is required at the input of the LP2981.In addition,this input capacitor should be located within 1cm of the input pin and connected to a clean analog ground.There is no Equivalent Series Resistance (ESR)requirement for this capacitor,and the capacitance can be increased without limit.A good quality ceramic or tantalum capacitor can be used.As a PNP regulator,the LP2981requires the output capacitor to meet both a minimum capacitance and ESR value.Required ESR values as a function of load current are provided for various output voltages,load currents,and capacitances (see Figure 2through Figure 5).•Minimum C out :3.3µF (can be increased without limit to improve transient response stability margin)•ESR range:see Figure 2through Figure 5It is critical that both the minimum capacitance and ESR requirement be met over the entire operating temperature range.Depending on the type of capacitor used,both of these parameters can vary significantly with temperature (see capacitor characteristics section).Figure 2.5-V/3.3-µF ESR Curves Figure 3.5-V/10-µF ESR CurvesFigure 4.3-V/3.3-µF ESR Curves Figure 5.3-V/10-µF ESR Curves元器件交易网Capacitor Characteristics CeramicsTantalumAluminumON/OFF OperationLP2981 100-mA ULTRA-LOW DROPOUT REGULATORWITH SHUTDOWNSLVS521E–JULY2004–REVISED MARCH2008Due to their very low ESR values,ceramic capacitors are not suitable for use as the output capacitor.For instance,a typical2.2-µF ceramic capacitor has an ESR in the range of10mΩto20mΩand,thus,easily can fall out of minimum ESR requirements under certain operating conditions.If a ceramic capacitor is used at the output,a1-Ωresistor should be placed in series with the capacitor to raise the ESR seen by the regulator.Solid tantalum capacitors are optimal choices for the LP2981,but they still must meet the minimum ESR requirement.Note that the ESR of a tantalum capacitor increases as temperature drops,as much as doubling from25°C to–40°C.Thus,ESR margins must be maintained over the temperature range to prevent regulator instability.For operation at very low temperatures,paralleling a tantalum capacitor with a ceramic one keeps the combined ESR from increasing near the upper limit of the ESR curve.Aluminum capacitors can be used,but use with the LP2981is impractical due to their large physical dimensions.They also must meet the ESR requirements over the full temperature range.In this regard,aluminium capacitors are at a big disadvantage due to their sharp ESR increase as temperature drops.For example,over a temperature drop from20°C to–40°C,the ESR of an aluminum electrolytic capacitor can increase by a factor of50.In addition,some of the electrolytes used in these capacitors can freeze at–25°C,making the capacitornonoperational.The LP2981allows for a shutdown mode via the ON/OFF pin.If the shutdown feature is not used,ON/OFF should be connected to the input to ensure that the regulator is on at all times.To drive ON/OFF:•A LOW(≤0.3V)turns the regulator OFF;a HIGH(≥1.6V)turns it ON.•Use either a totem-pole output or an open-collector output with a pullup resistor tied to V IN(or another logic supply).The HIGH signal can exceed V IN,but must not exceed the absolute maximum ratings of20V for theON/OFF pin.•Apply a signal with a slew rate of≥40mV/µs.A slow slew rate can cause the shutdown function to operate incorrectly.元器件交易网Reverse Input-Output VoltageV OUTSchottkyLP2981100-mA ULTRA-LOW DROPOUT REGULATOR WITH SHUTDOWNSLVS521E–JULY 2004–REVISED MARCH 2008An inherent diode is present across the PNP pass element of the LP2981.With the anode connected to the output,this diode is reverse biased during normal operation,since the input voltage is higher than the output.However,if the output is pulled one V BE higher than the input,or if the input is abruptly stepped below the output,this diode is forward biased and can cause a parasitic silicon-controlled rectifier (SCR)to latch,resulting in current flowing from the output to the input (values in excess of 100mA can cause damage).Thus,to prevent possible damage to the regulator in any application where the output may be pulled above the input,an external Schottky diode must be connected between the output and input.With the anode on output,this Schottky limits the reverse voltage across the output and input pins to ∼0.3V,preventing the regulator's internal diode from forward biasing.元器件交易网PACKAGING INFORMATIONOrderable Device Status(1)PackageType PackageDrawingPins PackageQtyEco Plan(2)Lead/Ball Finish MSL Peak Temp(3)LP2981-28DBVR ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-28DBVRE4ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-28DBVRG4ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-28DBVT ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-28DBVTE4ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-28DBVTG4ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-29DBVR ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-29DBVRG4ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-29DBVT ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-29DBVTG4ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-30DBVR ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-30DBVRE4ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-30DBVRG4ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-30DBVT ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-30DBVTE4ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-30DBVTG4ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-33DBVR ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-33DBVRE4ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-33DBVRG4ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-33DBVT ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-33DBVTE4ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-33DBVTG4ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-50DBVR ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-50DBVRG4ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981-50DBVT ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMOrderable Device Status(1)PackageType PackageDrawingPins PackageQtyEco Plan(2)Lead/Ball Finish MSL Peak Temp(3)LP2981-50DBVTG4ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-28DBVR ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-28DBVRE4ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-28DBVRG4ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-28DBVT ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-28DBVTE4ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-28DBVTG4ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-29DBVR ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-29DBVRG4ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-29DBVT ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-29DBVTG4ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-30DBVR ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-30DBVRE4ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-30DBVRG4ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-30DBVT ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-30DBVTE4ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-30DBVTG4ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-33DBVR ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-33DBVRE4ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-33DBVRG4ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-33DBVT ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-33DBVTE4ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-33DBVTG4ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-50DBVR ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-50DBVRG4ACTIVE SOT-23DBV53000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMLP2981A-50DBVT ACTIVE SOT-23DBV5250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMOrderable Device Status (1)Package Type Package Drawing Pins Package Qty Eco Plan (2)Lead/Ball Finish MSL Peak Temp (3)LP2981A-50DBVTG4ACTIVESOT-23DBV5250Green (RoHS &no Sb/Br)CU NIPDAULevel-1-260C-UNLIM(1)The marketing status values are defined as follows:ACTIVE:Product device recommended for new designs.LIFEBUY:TI has announced that the device will be discontinued,and a lifetime-buy period is in effect.NRND:Not recommended for new designs.Device is in production to support existing customers,but TI does not recommend using this part in a new design.PREVIEW:Device has been announced but is not in production.Samples may or may not be available.OBSOLETE:TI has discontinued the production of the device.(2)Eco Plan -The planned eco-friendly classification:Pb-Free (RoHS),Pb-Free (RoHS Exempt),or Green (RoHS &no Sb/Br)-please check /productcontent for the latest availability information and additional product content details.TBD:The Pb-Free/Green conversion plan has not been defined.Pb-Free (RoHS):TI's terms "Lead-Free"or "Pb-Free"mean semiconductor products that are compatible with the current RoHS requirements for all 6substances,including the requirement that lead not exceed 0.1%by weight in homogeneous materials.Where designed to be soldered at high temperatures,TI Pb-Free products are suitable for use in specified lead-free processes.Pb-Free (RoHS Exempt):This component has a RoHS exemption for either 1)lead-based flip-chip solder bumps used between the die and package,or 2)lead-based die adhesive used between the die and leadframe.The component is otherwise considered Pb-Free (RoHS compatible)as defined above.Green (RoHS &no Sb/Br):TI defines "Green"to mean Pb-Free (RoHS compatible),and free of Bromine (Br)and Antimony (Sb)based flame retardants (Br or Sb do not exceed 0.1%by weight in homogeneous material)(3)MSL,Peak Temp.--The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications,and peak solder temperature.Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.TI bases its knowledge and belief on information provided by third parties,and makes no representation or warranty as to the accuracy of such information.Efforts are underway to better integrate information from third parties.TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.TI and TI suppliers consider certain information tobe proprietary,and thus CAS numbers and other limited information may not be available for release.In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s)at issue in this document sold by TI to Customer on an annual basis.PACKAGE OPTION ADDENDUM4-Mar-2008TAPE AND REEL INFORMATION*All dimensions are nominalDevicePackage Type Package Drawing Pins SPQReel Diameter (mm)Reel Width W1(mm)A0(mm)B0(mm)K0(mm)P1(mm)W (mm)Pin1Quadrant LP2981-28DBVR SOT-23DBV 53000180.09.2 3.23 3.17 1.37 4.08.0Q3LP2981-28DBVR SOT-23DBV 53000178.09.0 3.23 3.17 1.37 4.08.0Q3LP2981-28DBVT SOT-23DBV 5250180.09.2 3.23 3.17 1.37 4.08.0Q3LP2981-29DBVR SOT-23DBV 53000180.09.2 3.23 3.17 1.37 4.08.0Q3LP2981-30DBVR SOT-23DBV 53000178.09.0 3.23 3.17 1.37 4.08.0Q3LP2981-30DBVR SOT-23DBV 53000180.09.2 3.23 3.17 1.37 4.08.0Q3LP2981-30DBVT SOT-23DBV 5250180.09.2 3.23 3.17 1.37 4.08.0Q3LP2981-33DBVR SOT-23DBV 53000178.09.0 3.23 3.17 1.37 4.08.0Q3LP2981-33DBVR SOT-23DBV 53000180.09.2 3.23 3.17 1.37 4.08.0Q3LP2981-33DBVT SOT-23DBV 5250180.09.2 3.23 3.17 1.37 4.08.0Q3LP2981-50DBVR SOT-23DBV 53000180.09.2 3.23 3.17 1.37 4.08.0Q3LP2981-50DBVT SOT-23DBV 5250180.09.2 3.23 3.17 1.37 4.08.0Q3LP2981A-28DBVR SOT-23DBV 53000178.09.0 3.23 3.17 1.37 4.08.0Q3LP2981A-28DBVR SOT-23DBV 53000180.09.2 3.23 3.17 1.37 4.08.0Q3LP2981A-28DBVT SOT-23DBV 5250180.09.2 3.23 3.17 1.37 4.08.0Q3LP2981A-29DBVR SOT-23DBV 53000180.09.2 3.23 3.17 1.37 4.08.0Q3LP2981A-29DBVT SOT-23DBV 5250180.09.2 3.23 3.17 1.37 4.08.0Q3LP2981A-30DBVRSOT-23DBV53000180.09.23.233.171.374.08.0Q3Device PackageType PackageDrawingPins SPQ ReelDiameter(mm)ReelWidthW1(mm)A0(mm)B0(mm)K0(mm)P1(mm)W(mm)Pin1QuadrantLP2981A-30DBVR SOT-23DBV53000178.09.0 3.23 3.17 1.37 4.08.0Q3 LP2981A-30DBVT SOT-23DBV5250180.09.2 3.23 3.17 1.37 4.08.0Q3 LP2981A-33DBVR SOT-23DBV53000180.09.2 3.23 3.17 1.37 4.08.0Q3 LP2981A-33DBVR SOT-23DBV53000178.09.0 3.23 3.17 1.37 4.08.0Q3 LP2981A-33DBVT SOT-23DBV5250180.09.2 3.23 3.17 1.37 4.08.0Q3 LP2981A-50DBVR SOT-23DBV53000180.09.2 3.23 3.17 1.37 4.08.0Q3 LP2981A-50DBVT SOT-23DBV5250180.09.2 3.23 3.17 1.37 4.08.0Q3*All dimensions are nominalDevice Package Type Package Drawing Pins SPQ Length(mm)Width(mm)Height(mm) LP2981-28DBVR SOT-23DBV53000205.0200.033.0LP2981-28DBVR SOT-23DBV53000180.0180.018.0LP2981-28DBVT SOT-23DBV5250205.0200.033.0LP2981-29DBVR SOT-23DBV53000205.0200.033.0LP2981-30DBVR SOT-23DBV53000180.0180.018.0LP2981-30DBVR SOT-23DBV53000205.0200.033.0LP2981-30DBVT SOT-23DBV5250205.0200.033.0LP2981-33DBVR SOT-23DBV53000180.0180.018.0LP2981-33DBVR SOT-23DBV53000205.0200.033.0LP2981-33DBVT SOT-23DBV5250205.0200.033.0Device Package Type Package Drawing Pins SPQ Length(mm)Width(mm)Height(mm) LP2981-50DBVR SOT-23DBV53000205.0200.033.0LP2981-50DBVT SOT-23DBV5250205.0200.033.0LP2981A-28DBVR SOT-23DBV53000180.0180.018.0LP2981A-28DBVR SOT-23DBV53000205.0200.033.0LP2981A-28DBVT SOT-23DBV5250205.0200.033.0LP2981A-29DBVR SOT-23DBV53000205.0200.033.0LP2981A-29DBVT SOT-23DBV5250205.0200.033.0LP2981A-30DBVR SOT-23DBV53000205.0200.033.0LP2981A-30DBVR SOT-23DBV53000180.0180.018.0LP2981A-30DBVT SOT-23DBV5250205.0200.033.0LP2981A-33DBVR SOT-23DBV53000205.0200.033.0LP2981A-33DBVR SOT-23DBV53000180.0180.018.0LP2981A-33DBVT SOT-23DBV5250205.0200.033.0LP2981A-50DBVR SOT-23DBV53000205.0200.033.0LP2981A-50DBVT SOT-23DBV5250205.0200.033.0IMPORTANT NOTICETexas Instruments Incorporated and its subsidiaries(TI)reserve the right to make corrections,modifications,enhancements,improvements, and other changes to its products and services at any time and to discontinue any product or service without notice.Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty.Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty.Except where mandated by government requirements,testing of all parameters of each product is not necessarily 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TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products are designated by TI as compliant with ISO/TS16949requirements.Buyers acknowledge and agree that,if they use any non-designated products in automotive applications,TI will not be responsible for any failure to meet such requirements.Following are URLs where you can obtain information on other Texas Instruments products and application solutions:Products ApplicationsAmplifiers AudioData Converters AutomotiveDSP BroadbandClocks and Timers Digital ControlInterface MedicalLogic MilitaryPower Mgmt Optical NetworkingMicrocontrollers SecurityRFID TelephonyRF/IF and ZigBee®Solutions Video&ImagingWirelessMailing Address:Texas Instruments,Post Office Box655303,Dallas,Texas75265Copyright©2008,Texas Instruments Incorporated。
MIC29152BT资料
元器件交易网 MIC29150/29300/29500/29750 Ordering Information
Part Number MIC29150-3.3BT MIC29150-4.2BT MIC29150-5.0BT MIC29150-12BT MIC29150-3.3BU MIC29150-5.0BU MIC29150-12BU MIC29151-3.3BT MIC29151-5.0BT MIC29151-12BT MIC29151-3.3BU MIC29151-5.0BU MIC29151-12BU MIC29152BT MIC29152BU MIC29153BT MIC29153BU MIC29300-3.3BT MIC29300-5.0BT MIC29300-12BT MIC29300-3.3BU MIC29300-5.0BU MIC29300-12BU MIC29301-3.3BT MIC29301-5.0BT MIC29301-12BT MIC29301-3.3BU MIC29301-5.0BU MIC29301-12BU MIC29302BT MIC29302BU MIC29303BT MIC29303BU Temp. Range* Volts Current Package –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C –40 to +125°C 3.3 4.2 5.0 12 3.3 5.0 12 3.3 5.0 12 3.3 5.0 12 Adj Adj Adj Adj 3.3 5.0 12 3.3 5.0 12 3.3 5.0 12 3.3 5.0 12 Adj Adj Adj Adj 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A TO-220 TO-220 TO-220 TO-220 TO-263 TO-263 TO-263 TO-220-5 TO-220-5 TO-220-5 TO-263-5 TO-263-5 TO-263-5 TO-220-5 TO-263-5 TO-220-5 TO-263-5 TO-220 TO-220 TO-220 TO-263 TO-263 TO-263 TO-220-5 TO-220-5 TO-220-5 TO-263-5 TO-263-5 TO-263-5 TO-220-5 TO-263-5 TO-220-5 TO-263-5 Part Number MIC29500-3.3BT MIC29500-5.0BT MIC29501-3.3BT MIC29501-5.0BT MIC29501-3.3BU MIC29501-5.0BU MIC29502BT MIC29502BU MIC29503BT MIC29503BU MIC29750-3.3BWT MIC29750-5.0BWT MIC29751-3.3BWT MIC29751-5.0BWT MIC29752BWT
EN298中文版
鼓风或非鼓风燃气燃烧器和燃气用具的自动燃气燃烧器控制系统鼓风或非鼓风燃气燃烧器和燃气用具的自动燃气燃烧器控制系统目录前言引言1范围2引用标准3术语和定义4分类5测试和测量误差的条件6结构要求6.1 概述6.2 由外壳提供的保护6.3 电气设备6.4 电气元件6.4.1电气元件性能6.4.2测试6.5 长期性能6.5.1概述6.5.2应力测试和长期性能测试7功能要求7.1 概述7.2 程序概述安全动作火焰故障再启动再点火起动顺序中其它外部装置的监测安全关闭后的起动内清扫和内等候时间7.3 时间概述清扫和等候时间安全时间熄火响应时间达到安全关闭再动作时间达到锁定的再动作时间7.4 火焰检测装置7.5 锁定和复位装置锁定功能复位键7.6 性能测试在室温在低温在高温8 环境影响防护8.1 温度范围8.2 电源电压变化概述对低于额定电压85%的操作要求9 对内部故障的保护9.1 内部故障概述非长期运行系统：第一故障非长期运行系统：第二故障长期运行系统：第一故障长期运行系统：第二故障长期和非长期运行系统：在锁定和安全关闭期间的故障9.2 电路和结构评价测试条件测试准则10 集成电子器件的附加要求10.1 概述10.2 故障避免和容错10.3 文献10.4 评定11 标志、安装和操作说明11.1 标志11.2 安装和操作说明11.3 警示语附录附录A（标准的）电气/电子元件的故障模式附录B（资料的）燃气用具标准中提出的燃烧器控制系统功能特性表附录C（标准的）对DC电源燃烧器的要求C.1 范围C.2 热应力测试C.3 长期性能测试（由厂商实施）C.4 在室温下C.5 电源电压变化C.6 电源电压、电源频率、电压波动抗扰度，电快速瞬变/脉冲群电磁传导抗扰度C.7 B型控制器的电快速瞬变抗扰度C.7.1 概述C.7.2 电瞬变传导抗扰度测试附录ZA(资料性) 本欧洲标准各条款与EU指令的基本要求或其它条款对照表参考资料前言本欧洲标准EN298:2003是由CEN/TC 58“燃气燃烧器和燃气用具安全和控制装置”技术委员会制定。
瑞士音响R1 MKII软胶布麦克风说明书
UNPACKING, INSPECTION STORAGE AND TRANSPORTThe R1 MKII was carefully tested and packed at the factory. The soft case has been designed to protect the microphone when you store, ship or move it. Please always use it when you will need to transport the R1 MKII for service or for any other reason. IMPORTANT NOTICE:The ribbon assembly in the R1 MKII, as in any ribbon microphones, is very sensitive and fragile and can be easily damaged if handled the wrong way,That is why it is important that you immediately after you have received the R1 MKII, verifies that it is working properly and that it has not been dam-aged during shipping.The warranty of the ribbon assembly in theR1 MK II does not extend beyond this initial inspec-tion, since it can be damaged so easily if it isn´t handled properly.In the rare case that the R1 MKII is not working properly when receiving it, please contact your dealer.FEATURES- The unmatched natural and musical sound of a classical ribbon microphone.- A stunning realism with the feeling of “being-there”.- The typical large and mellow ribbon sound quality with a very smooth top end and an extended low end.- A fast and life-like transient reproduction.- An ultra-high SPL capability, 160 dB SPL (1% THD @ 1000 Hz) and a very good sensitivity for a ribbon microphone.- A Figure-8 directional pattern for wide sweet spots both in the front and in the back of the microphone. Zero spots towards the sides.- A 50 mm long ribbon made of 2 microns thick aluminium foil.- An internal shock mount for the ribbon and magnet assembly.- A removable microphone cable and a soft trans-port case- Manufactured of the finest materials for a great performance and long-term reliability.- The R1 MKII can be used with any standard mixer or preamp, preferably with a balanced input.USE OF THE R1 MKIIThe Figure-8 pattern of the R1 MKII gives you the ability to separate sound sources by placing the unwanted ones in the side zero pick-up directions. Placing the unwanted ones towards the sides of the R1 MKII will remove most of the direct sound from the sound source. The R1 MKII will still pick up that source from the reverberant fieldin the recording room though.Due to the small width of the ribbon,the horizontal pick-up pattern is verywide.It is much wider compared to a largecapsule condenser microphone.The vertical pick-up pattern is narrowat the higher frequencies though dueto the length of the ribbon. Thisis due to the fact the wavelengthat higher frequencies is muchshorter than the length of theribbon. If you want maximumtop end response from the R1MKII, it is important that theR1 MKII is mounted so that itis parallel to the sound source.If it is vertically angled againstthe sound source, then therewill inevitably be a loss of topend. This can sometimes be aR 1MKIIVintage Style Ribbon MicrophoneINTRODUCTIONCongratulations on choosing the Golden Age Project R1 MKII microphone!The R1 MKII is a high quality vintage style ribbon microphone. It offers the unique and natural sound that has been available in classical microphones like the RCA 44 and 77 that are still used to make high quality recordings today after almost 70 years.The R1 MKII is very well suited for the recording of most sound sources like vocals, acoustic instruments, strings, horns, orchestras and choral groups and many live sound applications.In spite of its low cost, the R1 MKII meets the most stringent demands.To get maximum benefit and trouble free use out of the R1 MKII, please read this manual carefully.good thing so this effect can be used creatively. The narrow vertical pick-up pattern will lower the effect of high frequency sound reflections.Since the sensitivity of ribbon microphones in gen-eral are low compared to condenser microphones, you will need a preamp with some extra gain avail-able when you record quiet sound sources.Be aware of the proximity effect (an increase in bass response) when the R1 MKII is close to the sound source. This can be a good or a bad thing. You can adjust the bass response by changing the distance from the microphone to the sound source for an optimum result in different situations. You can also use a high-pass filter in your preamp or mixer. PRECAUTIONS-The active part in the R1 MKII consists of a very thin and ultra-light corrugated aluminium ribbon clamped under light tension and mounted between the poles of a strong magnet. When the sound waves hits the ribbon and moves it, a small current is generated in the ribbon since it is suspended in a magnetic field.The good part of this design is that it results in one of the warmest and most natural sound available from any type of microphone. The bad part of it is that it also makes ribbon microphones the most sen-sitive and fragile ones. It is therefore very important that the R1 MKII, as any other ribbon microphone, is treated with very special care if it is not to be seri-ously damaged.In order to ensure a long life for your R1 MKII, please always follow these guidelines:1. Do never subject the R1 MKII to hard knocks, such as dropping it or not packing it properly when you move or transport it since this can destroy the ribbon assembly.2. Do never blow into the R1 MKII and protect it from any strong blast of air movement as this can tear and destroy the fragile ribbon.3. Do never move around fast with the R1 MKII in your hand, please remember that any excessive air movement can damage the ribbon.4. Do always use a pop-filter when there is a risk of excessive air movements reaching the ribbon from the sound source. One example is close-up vocals. The pop-filter will also protect the R1 MKII from mouth spray.5. Do always protect the R1 MKII from dirt and moisture.6. Do never apply phantom power to the R1 MKII since it can burn the ribbon. Be very careful that phantom power is switched off at least 1 minute before plugging the R1 MKII into a mixer or preamp and see to it that no one turns the phantom power on by mistake.7. When the R1 MKII is not in use, always keep it in its soft case.8. Do always store the R1 MKII in a vertical posi-tion. If it is stored horizontally, the 50 mm long ribbon can sag by time which will gradually degrade the performance of the R1 MKII.9. Avoid exposing the R1 MKII to direct sunlight or extremes in humidity for extended periods of time.10. Do never try to service the R1 MKII yourself since this will void the warranty. WARRANTY- Due to the extremely delicate nature of ribbon microphones which can so easily be damaged by improper handling and use, the ribbon assembly is not covered under warranty.Please check your R1 MKII carefully immediately when you receive it and make sure that there are no problems with the microphone. After that first initial inspection, the standard one year warranty only apply to defects in materials and workmanship in parts other than the ribbon assembly.If the ribbon assembly is damaged during use, con-tact your dealer for a quote for replacement of the ribbon assembly.SPECIFICATIONSType: Large ribbon geometry, pure aluminium, 2 um thick, 50 x 5 mm size.Polar pattern: Figure 8Frequency response: 30 Hz – 18 kHz +/- 3 dB Sensitivity: -52 dB (0 dB=1V/Pa) @1kHz.Maximum SPL (<1% THD @ 1kHz):160 dB.Output impedance: 600 ohm, bal-anced.Recommended load impedance: > 3kOhm.Dimensions: 69x185 mm.Weight: 1 400 g.Please note: Specifications canbe changed at any time withoutnotice.Many thanks for purchasing theGolden Age Project R1 MKII- We wish you much joy and manywonderful recordings with it!。
MIC5822YN;MIC5821YN;MIC5821BN;MIC5822BN;中文规格书,Datasheet资料
February 20051MIC5821/5822General DescriptionBiCMOS technology gives the MIC5821/5822 family flexibil-ity beyond the reach of standard logic buffers and power driver arrays. These devices each have an eight-bit CMOS shift register, CMOS control circuitry, eight CMOS data latches, and eight bipolar current-sink Darlington output drivers. The 500mA outputs are suitable for use with incan-descent bulbs and other moderate to high current loads. The drivers can be operated with a split supply where the negative supply is down to –20V. Except for maximum driver output voltage ratings, the MIC5821 and MIC5822 are identical.These devices have greatly improved data-input rates. With a 5V logic supply they will typically operate faster than 5MHz. With a 12V supply significantly higher speeds are obtained. The CMOS inputs are compatible with standard CMOS, PMOS, and NMOS logic levels. TTL and DTL circuits may require the use of appropriate pull-up resistors. By using the serial data output, the drivers can be cascaded for interface applications requiring additional drive lines.Features• 3.3 MHz Minimum Data-Input Rate•CMOS, PMOS, NMOS, TTL Compatible •Internal Pull-Down or Pull-Up Resistors •Low-Power CMOS Logic and Latches •High-Voltage Current-Sink Outputs •Single or Split Supply OperationSERIAL DATA OUT V SSV DDSTROBEOUTPUT ENABLE (ACTIVE LOW)87654321GND V EEFunctional DiagramPin Configuration1OUT 2OUT 3OUT 4OUT 5OUT 6OUT 7OUT 8OUT (Plastic DIP)Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • Ordering InformationPart NumberStandard Pb-Free Temp Range PackageMIC5821BN MIC5821YN –40°C to +85°C 16-Pin Plastic DIP MIC5822BNMIC5822YN–40°C to +85°C16-Pin Plastic DIP/MIC5821/58222February 2005 /February 20053MIC5821/5822Micrel, Inc.MIC5821/5822Electrical Characteristics (Note 4) T A = –55°C, V DD = 5V, V SS = V EE = 0V (unless otherwise noted)LimitsCharacteristicSymbol Test Conditions Min.Max.Unit Output Leakage Current I CEX V OUT = 80V 50µA Collector-Emitter V CE(SAT)I OUT = 100mA 1.3VSaturation Voltage I OUT = 200mA1.5I OUT = 350mA, V DD = 7.0V1.8Input VoltageV IN0)0.8V V IN(1)V DD = 12V 10.5V DD = 5.0V 3.5Input ResistanceRINV DD = 12V 35k ΩV DD = 10V 35V DD = 5.0V35Supply CurrentI DD(ON)One Driver ON, V DD = 12V 5.5mA One Driver ON, V DD = 10V 4.5One Driver ON, V DD = 5.0V 3.0All Drivers ON, V DD = 12V 16All Drivers ON, V DD = 10V 14All Drivers ON, V DD = 5.0V10I DD(OFF)All Drivers OFF, V DD = 12V 3.5All Drivers OFF, V DD = 5.0V2.0Electrical Characteristics (Note 4) at T A = 25°C V DD = 5V, V EE = V SS = 0V (unless otherwise specified)ApplicableLimits CharacteristicSymbol Devices Test Conditions Min.Max.Unit Output Leakage CurrentI CEXMIC5821V OUT = 50V50µAV OUT = 50V, T A = +70°C 100MIC5822V OUT = 80V50V OUT = 80V, T A = +70°C 100Collector-Emitter V CE(SAT)BothI OUT = 100mA 1.1V Saturation Voltage I OUT = 200mA1.3I OUT = 350mA, V DD = 7.0V1.6Input VoltageV IN(0)Both 0.8V V IN(1)BothV DD = 12V 10.5V DD = 10V 8.5V DD = 5.0V3.5Input ResistanceR INBothV DD = 12V 50k ΩV DD = 10V 50V DD = 5.0V50Supply CurrentI DD(ON)BothOne Driver ON, V DD = 12V 4.5mA One Driver ON, V DD = 10V 3.9One Driver ON, V DD = 5.0V 2.4All Drivers ON, V DD = 12V 16All Drivers ON, V DD = 10V 14All Drivers ON, V DD = 5.0V8I DD(OFF)BothAll Drivers OFF, V DD = 5.0V, 1.6All Inputs = 0VAll Drivers OFF, V DD = 12V, 2.9All Inputs= 0V/MIC5821/58224February 2005 /MIC5821/5822Micrel, Inc.Timing Conditions(T A = +25°C, Logic Levels are V DD and V SS)V DD = 5.0VA. Minimum Data Active Time Before Clock Pulse (Data Set-Up Time).......................................................................75 nsB. Minimum Data Active Time After Clock Pulse (Data Hold Time).............................................................................75 nsC. Minimum Data Pulse Width....................................................................................................................................150 nsD. Minimum Clock Pulse Width...................................................................................................................................150 nsE. Minimum Time Between Clock Activation and Strobe............................................................................................300 nsF. Minimum Strobe Pulse Width..................................................................................................................................100 nsG. Typical Time Between Strobe Activation and Output Transition.............................................................................500 nsSERIAL DATA present at the input is transferred to the shift register on the logic “0” to logic “1” transition of the CLOCK input pulse. On succeeding CLOCK pulses, the registers shift data information towards the SERIAL DATA OUTPUT. The SERIAL DATA must appear at the input prior to the rising edge of the CLOCK input waveform.Information present at any register is transferred to its respective latch when the STROBE is high (serial-to-parallel conversion).The latches will continue to accept new data as long as the STROBE is held high. Applications where the latches are bypassed (STROBE tied high) will require that the ENABLE input be high during serial entry.When the ENABLE input is high, all of the output buffers are disabled (OFF) without affecting the information stored in the latches or shift register. With the ENABLE input low, the outputs are controlled by the state of the latches.Typical ApplicationsMIC5822 Level Shifting Lamp Driver with Darlington Emitters Tied to a Negative SupplySERIAL DATA CLOCK/MIC5821/58226February 2005 /MIC5821/5822Micrel, Inc.February 20057MIC5821/5822/Micrel, Inc.MIC5821/5822MIC5821/58228February 2005MICREL INC.2180 FORTUNE DRIVE SAN JOSE, CA 95131USATEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by Micrel for its use.Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnifyMicrel for any damages resulting from such use or sale.© 1998 Micrel Incorporated/分销商库存信息:MICRELMIC5822YN MIC5821YN MIC5821BN MIC5822BN。
MIC2951中文资料
MIC2951中⽂资料Pin DescriptionPin #Pin #Pin Name Pin Function MIC2950MIC295131OUT Regulated Output2SNS Sense (Input): Output-voltage sensing end of internal voltage divider for fixed 5V operation. Not used in adjustable configuration.3SHDN Shutdown/Enable (Input): TTL compatible input. High = shutdown, low or open = enable.24GND Ground5ERRError Flag (Output): Active low, open-collector output (low = error,floating = normal).6TAP 3.3V/4.85/5V Tap: Output of internal voltage divider when the regulator is configured for fixed operation. Not used in adjustable configuration.7FB Feedback (Input): 1.235V feedback from internal voltage divider’s TAP (for fixed operation) or external resistor network (adjustable configuration).18INUnregulated Supply InputPin ConfigurationIN FB TAP ERROUT SNS SHDN GND DIP (N), SOIC (M), MM8? (MM)(Top View)GND MIC2950-xx TO-92 (Z)(Bottom View)Ordering InformationPart Number Voltage Accuracy Temperature Range*Package MIC2950-05BZ 5.0V 0.5%–40°C to +125°C TO-92MIC2950-06BZ 5.0V 1.0%–40°C to +125°C TO-92MIC2951-02BM 5.0V 0.5%–40°C to +125°C 8-pin SOIC MIC2951-03BM 5.0V 1.0%–40°C to +125°C 8-pin SOIC MIC2951-02BN 5.0V 0.5%–40°C to +125°C 8-pin plastic DIP MIC2951-03BN 5.0V 1.0%–40°C to +125°C 8-pin plastic DIP MIC2951-03BMM 5.0V 1.0%–40°C to +125°C 8-lead MM8?MIC2951-3.3BM 3.3V 1.0%–40°C to +125°C 8-pin SOIC MIC2951-4.8BM4.85V1.0%–40°C to +125°C8-pin SOIC* junction temperatureThe MIC2950 is available as either an -05 or -06 version. The-05 and -06 versions are guaranteed for junction temperatures from –40°C to +125°C; the -05 version has a tighter output and reference voltage specification range over temperature. The MIC2951 is available as an -02 or -03 version.The MIC2950 and MIC2951 have a tight initial tolerance (0.5% typical), a very low output voltage temperature coefficient which allows use as a low-power voltage reference, and extremely good load and line regulation (0.04% typical). This greatly reduces the error in the overall circuit, and is the result of careful design techniques and process control.Electrical CharacteristicsV IN = 6V; I L = 100µA; C L = 1µF; T J = 25°C, bold values indicate –40°C ≤ T J ≤ +125°C; Note 8; unless noted.Parameter ConditionMin Typ Max Units Output VoltageMIC295x-02/-05 (±0.5%), T J = 25°C 4.975 5.000 5.025V MIC295x-03/-06 (±1%), T J = 25°C 4.950 5.000 5.050V MIC2951-3.3 (±1%), T J = 25°C 3.267 3.300 3.333V MIC2951-4.8 (±1%), T J = 25°C4.802 4.8504.899V Output VoltageMIC295x-02/-05 (±0.5%), –25°C ≤ T J ≤ +85°C 4.950 5.050V MIC295x-03/-06 (±1%), –25°C ≤ T J ≤ +85°C 4.925 5.075V MIC2951-3.3 (±1%), –25°C ≤ T J ≤ +85°C 3.251 3.350V MIC2951-4.8 (±1%), –25°C ≤ T J ≤ +85°C4.777 4.872V Output VoltageMIC295x-02/-05 (±0.5%), –40°C to +125°C 4.940 5.060V Over Full Temperature RangeMIC295x-03/-06 (±1%), –40°C to +125°C 4.900 5.100V MIC2951-3.3 (±1%), –40°C to +125°C 3.234 3.366V MIC2951-4.8 (±1%), –40°C to +125°C4.753 4.947V Output VoltageMIC295x-02/-05 (±0.5%), 100µA ≤ I L ≤ 150mA, T J ≤ T J(max) 4.930 5.070V Over Load VariationMIC295x-03/-06 (±1%), 100µA ≤ I L ≤ 150mA, T J ≤ T J(max) 4.880 5.120V MIC2951-3.3 (±1%), 100µA ≤ I L ≤ 150mA, T J ≤T J(max) 3.221 3.379V MIC2951-4.8 (±1%), 100µA ≤ I L ≤ 150mA, T J ≤ T J(max)4.7334.967V Output VoltageMIC295x-02/-05 (±0.5%), Note 920100ppm/°C Temperature CoefficientMIC295x-03/-06 (±1%), Note 950150ppm/°C MIC2951-3.3 (±1%), Note 950150ppm/°C MIC2951-4.8 (±1%), Note 950150ppm/°C Line RegulationMIC295x-02/-05 (±0.5%), Note 10, 110.030.10%0.20%MIC295x-03/-06 (±1%), Note 10, 110.040.20%0.40%MIC2951-3.3 (±1%), Note 10, 110.040.20%0.40%MIC2951-4.8 (±1%), Note 10, 110.040.20%0.40%Absolute Maximum Ratings (Note 1)Input Suppy Voltage (V IN ) Note 5.................–20V to +60VFeedback Input Voltage (V FB ) Note 6, 7......–1.5V to +26V Shutdown Input Voltage (V SHDN ) Note 6.....–0.3V to +30V Power Dissipation (P D ) Note 4................Internally Limited Storage Temperature..............................–65°C to + 150°C Lead Temperature (soldering, 5 sec.).......................260°C ESD, Note 3Operating Ratings (Note 2)Input Supply Voltage (V IN )...........................+2.0V to +30V Junction Temperature (T J ).......................................Note 4MIC2950-05/MIC2950-06.....................–40°C to +125°C MIC2951-02/MIC2950-03.....................–40°C to +125°CParameter Condition Min Typ Max Units Load Regulation MIC295x-02/-05 (±0.5%), 100µA ≤ I L≤ 150mA, Note 100.040.10% 0.20%MIC295x-03/-06 (±1%), 100µA ≤ I L≤ 150mA, Note 100.100.20%0.30%MIC2951-3.3 (±1%), 100µA ≤ I L≤ 150mA, Note 100.100.20%0.30%MIC2951-4.8 (±1%), 100µA ≤ I L≤ 150mA, Note 100.100.20%0.30% Dropout Voltage MIC295x-02/-03/-05/-06, I L = 100µA, Note 124080mV140mVMIC295x-02/-03/-05/-06, I L = 100mA, Note 12250300mVMIC295x-02/-03/-05/-06, I L = 150mA, Note 12300450mV600mVMIC2951-3.3 (±1%), I L = 100µA, Note 124080mV150mVMIC2951-3.3 (±1%), I L = 100mA, Note 12250350mVMIC2951-3.3 (±1%), I L = 150mA, Note 12320450mV600mVMIC2951-4.8 (±1%), I L = 100µA, Note 124080mV140mVMIC2951-4.8 (±1%), I L = 100mA, Note 12250300mVMIC2951-4.8 (±1%), I L = 150mA, Note 12300450mV600mV Ground Current MIC295x-02/-03/-05/-06, I L = 100µA120180µA300µAMIC295x-02/-03/-05/-06, I L = 100mA 1.7 2.5mA3.5mAMIC295x-02/-03/-05/-06, I L = 150mA46mA8mAMIC2951-3.3 (±1%), I L = 100µA100180µA300µAMIC2951-3.3 (±1%), I L = 100mA 1.7 2.5mAMIC2951-3.3 (±1%), I L = 150mA46mA10mAMIC2951-4.8 (±1%), I L = 100µA120180µA300µAMIC2951-4.8 (±1%), I L = 100mA 1.7 2.5mA3.5mAMIC2951-4.8 (±1%), I L = 150mA46mA8mA Dropout Ground Current MIC295x-02/-03/-05/-06 (±0.5%), V IN = 4.5V, I L = 100µA280350µA400µAMIC2951-3.3 (±1%), V IN = 3.0V, I L = 100µA150350µA400µAMIC2951-4.8 (±1%), V IN = 4.3V, I L = 100µA280350µA400µAParameter Condition MinTyp Max Units Current Limit V OUT = 0V 300400mA 450mA Thermal Regulation Note 130.050.20%/W Output Noise10Hz to 100kHz, C L = 1.5µF 430µV RMS 10Hz to 100kHz, C L = 200µF 160µV RMS 10Hz to 100kHz, C L = 3.3µF,100µV RMS 0.01µF bypass Feedback to OutputReference VoltageMIC295x-02/-05 (±0.5%) 1.220 1.235 1.250V 1.200 1.260V MIC295x-03/-06 (±1%) 1.210 1.235 1.260V 1.200 1.270VMIC2951-3.3 (±1%) 1.210 1.235 1.260V 1.200 1.270V MIC2951-4.8 (±1%)1.210 1.2351.260V 1.200 1.270V Reference VoltageMIC295x-02/-05 (±0.5%), Note 14 1.190 1.270V MIC295x-03/-06 (±1%), Note 14 1.185 1.285V MIC2951-3.3 (±1%), Note 14 1.185 1.285V MIC2951-4.8 (±1%), Note 141.1851.285V Feedback Bias Current 2040nA 60nA Reference VoltageMIC295x-02/-05 (±0.5%), Note 920ppm/°C Temperature CoefficientMIC295x-03/-06 (±1%), Note 950ppm/°C MIC2951-3.3 (±1%), Note 950ppm/°C MIC2951-4.8 (±1%), Note 950ppm/°C Feedback Bias Current 0.1nA/°C Temperature Coefficient Error Comparator (Flag)V OH = 30V0.01 1.00µA Output Leakage Current 2.00µA Error Comparator (Flag)V IN = 4.5V, I OL = 200µA 150250mV Output Low Voltage 400mV Error ComparatorNote 154060mV Upper Threshold Voltage 25mV Error ComparatorNote 157595mV Lower Threshold Voltage 140mV Error Comparator HysteresisNote 1515mVParameter Condition Min Typ Max Units Shutdown Input Logic Voltage MIC295x-02/-05 (±0.5%) 1.3VLow0.7VHigh 2.0VMIC295x-03/-06 (±1%) 1.3VLow0.7VHigh 2.0VMIC2951-3.3 (±1%) 1.3VLow0.7VHigh 2.0VMIC2951-4.8 (±1%) 1.3VLow0.7VHigh 2.0V Shutdown Input Current V SHUTDOWN = 2.4V3050µA100µAV SHUTDOWN = 30V450600µA750µA Regulator Output Current Note 7310µA in Shutdown20µANote 1.Exceeding the absolute maximum rating may damage the device.Note 2.The device is not guaranteed to function outside its operating rating.Note 3.Devices are ESD sensitive. Handling precautions are recommended.Note 4.The junction-to-ambient thermal resistance of the TO-92 package is 180°C/W with 0.4” leads and 160°C/W with 0.25” leads to a PC board.The thermal resistance of the 8-pin DIP package is 105°C/W junction-to-ambient when soldered directly to a PC board. Junction-to-ambient thermal resistance for the SOIC (M) package is 160°C/W. Junction-to-ambient thermal resistance for the MM8? (MM) is 250°C/W.Note 5.The maximum positive supply voltage of 60V must be of limited duration (≤100ms) and duty cycle (≤1%). The maximum continuous supply voltage is 30V.Note 6.When used in dual-supply systems where the output terminal sees loads returned to a negative supply, the output voltage should be diode-clamped to ground.Note 7.V SHDN≥ 2V, V IN≤ 30 V, V OUT = 0, with the FB pin connected to TAP.Note 8.Additional conditions for 8-pin devices are V FB = 5V, TAP and OUT connected to SNS (V OUT = 5V) and V SHDN≤0.8V.Note 9.Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.Note 10.Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered in the specification for thermal regulation.Note 11.Line regulation for the MIC2951 is tested at 150°C for I L = 1mA. For I L = 100µA and T J = 125°C, line regulation is guaranteed by design to0.2%. See Typical Performance Characteristics for line regulation versus temperature and load current.Note 12.Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 1V differential. At very low values of programmed output voltage, the minimum input supply voltage of 2V (2.3V over temperature) must be taken into account.Note 13.Thermal regulation is defined as the change in output voltage at a time “t” after a change in power dissipation is applied, excluding load or line regulation effects. Specifications are for a 50mA load pulse at V IN = 30V (1.25W pulse) for t = 10ms.Note 14.V REF≤ V OUT≤ (V IN – 1 V), 2.3V ≤ V IN≤ 30V, 100µA < I L≤ 150mA, T J≤ T JMAX.Note parator thresholds are expressed in terms of a voltage differential at the FB terminal below the nominal reference voltage measured at 6V input. To express these thresholds in terms of output voltage change, multiply by the error amplifier gain = V OUT /V REF =(R1 + R2)/R2. For example, at a programmed output voltage of 5V, the error output is guaranteed to go low when the output drops by95mV x 5V/1.235V = 384mV. Thresholds remain constant as a percent of V OUT as V OUT is varied, with the dropout warning occurring attypically 5% below nominal, 7.5% guaranteed.MIC2951Error Comparator OutputMIC2951Minimum Operating VoltageLine Transient ResponseLoad Transient ResponseLoad Transient Response2.22.01.91.6-30-20-1001020-250-200-150-100-50050-2.0-1.5-1.0-0.500.5 1.086420-20123465 2.52.01.51.00.50.0200400600800105210.50.20.10.05908070605040201010706050403020TEMPERATURE (°C)FEEDBACK VOLTAGE (V)TIME (µS)OUTPUT LOW VOLTAGE (V)INPUT VOLTAGE (V)TIME (mS)TIME (mS)FREQUENCY (Hz)FREQUENCY (Hz)M I N I M U M O P E R A T I N G V O L T A G E (V )B I A SC U R R E N T (n A )F E E D B A C K C U R R E N T (µA )C O M P A R A T O R O U T P U T (V )S I N K C U R R E N T (m A )O U T P U T V O L T A G E C H A N G E (m V )O U T P U T I M P E D A N C E (O H M S ) R I P P L E R E J E C T I O N (d B )R I P P L E R E J E C T I O N (d B )MIC2951Feedback Bias CurrentMIC2951Feedback Pin CurrentMIC2951Comparator Sink CurrentMIC2951Enable TransientRipple Rejection2.11.81.7-75-50-250255075100125150-75-50-250255075100125150TEMPERATURE (°C)µL O A DC U R R E N TµO U T P U T V O L T A G EC H A N G E (m V )L O A D C U R R E N TO U T P U T V O L T A G EC H A N G EI N P U T V O L T A G EO U T P U TV O L T A G E (V )S H U T D O W N P I N V O L T A G E (V )0.020.01301010101068090FREQUENCY (Hz)6TIME (µS)offset of about 60mV divided by the 1.235V reference voltage.(Refer to the block diagram on Page 1). This trip level remains “5% below normal” regardless of the programmed output voltage of the MIC2951. For example, the error flag trip level is typically 4.75V for a 5V output or 11.4V for a 12V output. The out of regulation condition may be due either to low input voltage, current limiting, thermal limiting, or overvoltage on input (over ? 40V).Figure 1 is a timing diagram depicting the ERROR signal and the regulated output voltage as the MIC2951 input is ramped up and down. The ERROR signal becomes valid (low) at about 1.3V input. It goes high at about 5V input (the input voltage at which V OUT = 4.75—for 5.0V applications). Since the MIC2951’s dropout voltage is load-dependent (see curve in Typical Performance Characteristics), the input voltage trip point (about 5V) will vary with the load current. The output voltage trip point does not vary with load.The error comparator has an open-collector output which requires an external pull-up resistor. Depending on system requirements, this resistor may be returned to the output or some other supply voltage. In determining a value for this resistor, note that while the output is rated to sink 200µA, this sink current adds to battery drain in a low battery condition.Suggested values range from 100k to 1M ?. The resistor is not required if this output is unused.Programming the Output Voltage (MIC2951)The MIC2951 may be pin-strapped for 5V (or 3.3V or 4.85V)using its internal voltage divider by tying Pin 1 (output) to Pin 2(sense) and Pin 7 (feedback) to Pin 6 (5V Tap). Alternatively,it may be programmed for any output voltage between its1.235V reference and its 30V maximum rating. An external pair of resistors is required, as shown in Figure2.The complete equation for the output voltage is V OUT = V REF x { 1 + R 1/R 2 } + I FB R 1where V REF is the nominal 1.235 reference voltage and I FB is the feedback pin bias current, nominally –20nA. The minimum recommended load current of 1 µA forces an upper limit of 1.2M ? on the value of R 2, if the regulator must work with no load (a condition often found in CMOS in standby), I FB will produce a 2% typical error in V OUT which may be eliminated at room temperature by trimming R 1. For better accuracy,choosing R 2 = 100k reduces this error to 0.17% while increasing the resistor program current to 12 µA.Reducing Output NoiseIn some applications it may be advantageous to reduce the AC noise present at the output. One method is to reduce the regulator bandwidth by increasing the size of the output capacitor. This is the only method by which noise can be reduced on the 3 lead MIC2950 and is relatively inefficient, as increasing the capacitor from 1µF to 220µF only decreases the noise from 430µV to 160µV rms for a 100kHz bandwidth at 5V output.Applications InformationAutomotive ApplicationsThe MIC2950/2951 are ideally suited for automotiveapplications for a variety of reasons. They will operate over a wide range of input voltages, have very low dropout voltages (40mV at light loads), and very low quiescent currents. These features are necessary for use in battery powered systems,such as automobiles. They are also “bulletproof” devices; with the ability to survive both reverse battery (negative transients up to 20V below ground), and load dump (positive transients up to 60V) conditions. A wide operating temperature range with low temperature coefficients is yet another reason to use these versatile regulators in automotive designs. External CapacitorsA 1.5 µF (or greater) capacitor is required between the MIC2950/MIC2951 output and ground to prevent oscillations due to instability. Most types of tantalum or aluminum electrolytics will be adequate; film types will work, but are costly and therefore not recommended. Many aluminum electrolytics have electrolytes that freeze at about –30°C, so solid tantalums are recommended for operation below –25°C.The important parameters of the capacitor are an effective series resistance of about 5? or less and a resonant frequency above 500kHz. The value of this capacitor may be increased without limit.At lower values of output current, less output capacitance is required for output stability. The capacitor can be reduced to 0.5µF for current below 10mA or 0.15µF for currents below 1mA. Using the 8-pin versions at voltages below 5V runs the error amplifier at lower gains so that more output capacitance is needed. For the worst-case situation of a 150mA load at 1.23V output (Output shorted to Feedback) a 5µF (or greater)capacitor should be used.The MIC2950 will remain stable and in regulation with no load in addition to the internal voltage divider, unlike many other voltage regulators. This is especially important in CMOS RAM keep-alive applications. When setting the output voltage of the MIC2951 version with external resistors, a minimum load of 1µA is recommended.A 0.1µF capacitor should be placed from the MIC2950/MIC2951 input to ground if there is more than 10 inches of wire between the input and the AC filter capacitor or if a battery is used as the input.Stray capacitance to the MIC2951 Feedback terminal (pin 7)can cause instability. This may especially be a problem when using high value external resistors to set the output voltage.Adding a 100pF capacitor between Output and Feedback and increasing the output capacitor to at least 3.3µF will remedy this.Error Detection Comparator OutputA logic low output will be produced by the comparator whenever the MIC2951 output falls out of regulation by more than approximately 5%. This figure is the comparator’s built-in1.230V870 29Regulator with Early Warning and Auxiliary OutputEARLY WARNING FLAG ON LOW INPUT VOLTAGEMAIN OUTPUT LATCHES OFF AT LOWER INPUT VOLTAGES BATTERY BACKUP ON AUXILIARY OUTPUT OPERATION: REG. #1’S V OUT IS PROGRAMMED ONE DIODE DROP ABOVE 5 V.ITS ERROR FLAG BECOMES ACTIVE WHEN V IN ≤ 5.7 V. WHEN V IN DROPS BELOW 5.3 V, THE ERROR FLAG OF REG. #2 BECOMES ACTIVE AND VIA Q1LATCHES THE MAIN OUTPUT OFF. WHEN V IN AGAIN EXCEEDS 5.7 V REG. #1IS BACK IN REGULATION AND THE EARLY WARNING SIGNAL RISES,UNLATCHING REG. #2 VIA D3.。
Micrel SY88212L 光学评估板说明书
SY88212LOptical Evaluation BoardMicrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • General DescriptionThis evaluation board allows for checking the performance of the SY88212 burst mode driver while driving a laser.Datasheet and support documentation can be found on Micrel's web site at: .Features∑ Open loop or close-loop operation∑Manual modulation, biasmax and bias settingRelated Support Documentation∑SY88212L Datasheet_______________________________________________________________________________________________________Evaluation BoardTOSA InstallationCheck the pin-out of the laser and install according tothe diagrams shown in Figure 1.Figure 1. Mounting of the LaserEvaluation Board Setting and OperationThe SY88216 evaluation is used to evaluate the SY88212 since the two parts are pin-compatible at the exception that pin 10 (APCFAULT) is active HIGH in SY88212 and active LOW in SY88216.1. Connect BEN- to GND or/and connect BEN+to V CC or remove R17 and R18.2. Install a jumper on SW3 to enable the driver.3. Adjust potentiometers VR2 (BIASMAX), VR3(MODSET), and VR4 (BIASSET) completely counterclockwise to set bias and modulation currents to zero “0” before powering the board.4. If the inputs DIN+/DIN- are DC-coupled, setthe output of the pattern generator high level within the range 0.5V-2V, first. Then connect the input (DIN+/DIN-) to the output of the pattern generator.5. Connect the laser output to the optical moduleof the scope with a SMF jumper.6. Open Loop Operation: Install a jumper onSW2 (MOD ON) and make sure that there is no jumper on SW4 (PD-MD).7. Connect 3.3V to TP9 (red) and GND to TP10(black) to power the board.8. Turn VR2 (BIASMAX) clockwise, BIASMAXsets the bias current in open loop, to increase the bias current until the laser starts output some light then turn VR3 clockwise to setmodulation current. Keep adjusting bias (VR2)and modulation (VR3) until an acceptable eye diagram is seen on the scope.9. Bias Current can be deduced from the voltageacross R7 between TP4 and TP6.I BIAS = (V TP6 – V TP4) / R710. The voltage between TP11 (BIASMON) andGND (across R4) is proportional to (Bias Current + Half modulation current):(I BIAS + I MOD / 2) / 50 = V R4 / R411. Close-loop operation: Install jumpers on SW1(BIAS ON) and SW4 (PD-MD) to close the loop and turn VR4 clockwise to increase the bias current. Keep adjusting BIASSET (VR4)and modulation (VR3) until an acceptable eye diagram is seen on the scope.PerformanceFigure 2. Optical Eye Diagram 1.25Gbps with 2.3G FilterLaser Response TuningOvershoot/UndershootThe damping resistors R21 and R22 installed in series with the laser are 10Ω. This value might be changed to a higher value to minimize or suppress any overshoot or undershoot on the optical signal out of the laser, but keep in mind that higher value damping resistors will lead to higher rise/fall time and lower maximum modulation current.The user can adjust the values of (R19, C8) and/or (R8, C9) to get better performance with his laser.Evaluation Board SchematicPCB Layout/AssemblyBill of MaterialsItem Part Number Manufacturer Description Qty. C1-5, C10Vishay(1)0.1m F, Size 0402, Ceramic Capacitor6 C6, C7ECSH0GY106R Panasonic(2)10m F, Y, Tantalium Solid Electrolytic Capacitor2 C8Vishay(1)5pF, Size 0402, Ceramic Capacitor1 D167-1636-1-ND Digikey(3)Red LED1 J1, J3-5142-0701-851JohnsonSMA End Launch Receptacle Connector4Components(4)J2Vishay(1)TOSA, Laser Subassembly1 L1Vishay(1) 1.2m H Ferrite Bead Inductor, Size 12061 L2Vishay(1)0W Resistor1 L3Vishay(1) 1.2m H Ferrite Bead Inductor, Size 08051 Q3, Q4MMTB3906WT1ON Semiconductor(5)N-MOSFET2 CRCW04020R00F Vishay(1)0W Resistor3 R6, R13,R14CRCW040210R0F Vishay(1)10W Resistor5 R3, R7, R9,R21, R22R19CRCW040275R0F Vishay(1)75W Resistor1 R16, R18CRCW040282R0F Vishay(1)82W Resistor2 R1, R2, R4CRCW04021000F Vishay(1)100W Resistor3 R15, R17CRCW04021300F Vishay(1)130W Resistor2 R12CRCW04022700F Vishay(1)270W Resistor1 R11CRCW04021002F Vishay(1)10k W Resistor1 TSW-1-2-07-G-S Samtec(6)Header, 2 positions4 SW1, SW2,SW3, SW4TP105011Keystone(7)Color Coded PCB test point, Black1 TP1-TP8,5014Keystone(7)Color Coded PCB test point, Yellow9 TP11TP95010Keystone(7)Color Coded PCB test point, Red1 U1SY88212L Micrel, Inc.(8) 2.5G Burst Mode Laser Driver1 3269 W-1-503 GLF Bourns(9)50K SMD Trimming Potentiometer3 VR2, VR3,VR4Notes:1.Vishay: .2.Panasonic: .3. Digikey: .4. Johnson components: .5. ON Semiconductor: .6.Samtec: .7. Keystone: .8. Micrel, Inc.: .9. Bourns: .HBW SupportHotline: 408-955-1690Email Support: ******************。
LG KG298 手机 使用说明书
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UDN2982LW-T中文资料
2981 AND 29828-CHANNELSOURCE DRIVERS1Pb-based variants are being phased out of the product line. Some variants cited in this footnote are in production but have been determined to be LAST TIME BUY or NOT FOR NEW DESIGN. This classification indicates that sale of this device is currently restricted to existing customer applications. The variants should not be purchased for new design applications becauseobsolescence in the near future is probable. Samples are no longer available. For LAST TIME BUY: status change: October 31,2006. Deadline for receipt of LAST TIME BUY orders: April 27, 2007. These variants include: A2982ELW, A2982ELWTR,A2982SLW, A2982SLWTR, UDN2981A, and UDN2982A. For NOT FOR NEW DESIGN: status change: May 1, 2006. These variants include: UDN2982LW and UDN2982LWTR.Selection GuidePart NumberPb-free 1Package Packing Ambient Temperature(°C)A2982ELW-T Yes 20-pin SOICW 37 per tube –40 to 85A2982ELWTR-T Yes 20-pin SOICW 1000 per reel –40 to 85A2982SLW-T Yes 20-pin SOICW 37 per tube –20 to 85A2982SLWTR-T Yes 20-pin SOICW 1000 per reel –20 to 85UDN2981A-T Yes 18-pin DIP 21 per tube –20 to 85UDN2982A-T Yes 18-pin DIP 21 per tube –20 to 85UDN2982LW-T Yes 18-pin SOICW 41 per tube –20 to 85UDN2982LWTR-T Yes 18-pin SOICW 1000 per reel –20 to 85UDQ2982LW-T Yes 18-pin SOICW 41 per tube –40 to 85UDQ2982LWTR-TYes18-pin SOICW1000 per reel–40 to 852981AND 29828-CHANNELSOURCE DRIVERSOne of Eight DriversOUTP UTV 5INP UT G R OUNDUSA2981 AND 29828-CHANNEL SOURCE DRIVERSs t i m i L t s e T el b a c i l p p A CharacteristicSymbol Devices Test ConditionsFig.Min.Typ.Max. Units Output Leakage Current I CEX All V IN = 0.4 V*, V S = 50 V, T A = +70°C 1——200µA Output Sustaining V CE(SUS)All I OUT V ——53—Am 54- = VoltageCollector-Emitter V CE(SAT)AllV IN = 2.4 V, I OUT = -100 mA 2— 1.6 1.8 V V e g a t l o V n o i t a r u t a S IN = 2.4 V, I OUT = -225 mA 2— 1.7 1.9 V V IN = 2.4 V, I OUT = -350 mA 2— 1.8 2.0 V Input CurrentI IN(ON)UDN2981A V IN 002041—3V 4.2 = µA V IN 054013—3V 58.3 = µA 2982†V IN 002041—3V 4.2 = µA V IN A m 39.152.1—3V21 = Output Source Current l OUT UDN2981A V IN = 2.4 V, V CE = 2.0 V 2-350——mA (Outputs Open)2982†V IN = 2.4 V, V CE = 2.0 V 2-350——mA Supply Current I S All V IN = 2.4 V*, V S = 50 V 4——10mA Leakage Current Clamp Diode I R All V R = 50 V, V IN = 0.4 V*5——50µA Clamp Diode V F All I F V 0.25.1—6Am 053 = Turn-On Delay t ON All 0.5E IN to 0.5 E OUT ,R L = 100Ω,——0.3 2.0µs V S = 35 VTurn-Off Delayt OFFAll0.5 E IN to 0.5 E OUT ,R L = 100Ω,——2.010µsV S = 35 V, See NoteELECTRICAL CHARACTERISTICS at T A = +25°C (unless otherwise specified).NOTES:Turn-off delay is influenced by load conditions. Systems applications well below the specified output loading may requiretiming considerations for some designs, i.e., multiplexed displays or when used in combination with sink drivers in a totem pole configuration.Negative current is defined as coming out of (sourcing) the specified device terminal.* All inputs simultaneously.All unused inputs must be connected to ground. Pulldown resistors (≈ 10 kΩ) are recommended for inputs that are allowed to float while power is being applied to V S .† Complete part number includes a prefix (A or UDN) and a suffix (A or SLW) as follows:UDN2981A, UDN2982A, UDN2982LW, or A2982SLW.2981 AND29828-CHANNEL SOURCE DRIVERS2981 AND 29828-CHANNEL SOURCE DRIVERSAllowable peak collector current as a function of duty cycleSeries UDN2980A300A L L O W AB L E P E A KC O L L E C T O R C U R R E N T I N m A A T 50°CPER CENT DUTY CYCLE100804000100150200250300350400450500A L L O W AB L E P E A KC O L L E C T O R C U R R E N T I N m A A T 70°CPER CENT DUTY CYCLEDwg. No. A-11,111BDwg. No. A-11,106B UDN2981A and UDN2982A150200250300350400450A L L O W A B L E P E A K C O L L E C T O R C U R R E N T I N m A A T 50°CPER CENT DUTY CYCLE100150200250300350400450A L L O W AB L E P E A KC O L L E C T O R C U R R E N T I N m A A T 70°CPER CENT DUTY CYCLEDwg. No. A-11,107BDwg. No. A-11,108B2981 AND 29828-CHANNELSOURCE DRIVERSInput current as a functionof input voltageTypical electrosensitiveT YP I C A L 2.5I N P U T C U R R E N T , I (m A )I N2.01.51.00.524681012INPUT VOLTAGE (VOLTS)MA X IM U MDwg. No. A-11,115BIN 1IN 2IN 3IN 4IN 5IN 6IN 7IN 8V SDwg. No. A-11,113A10 NOTES:1.Exact body and lead configuration at vendor’s option within limits shown.2.Lead spacing tolerance is non-cumulative.3.Lead thickness is measured at seating plane or below.4.Supplied in standard sticks/tubes of 21 devices.2981 AND29828-CHANNELSOURCE DRIVERSUDN2982LW(add “TR” to part number for tape and reel)Dimensions in InchesDimensions in MillimetersNOTES: 1.Exact body and lead configuration at vendor’s option within limits shown.2.Lead spacing tolerance is non-cumetive.3.Supplied in standard sticks/tubes of 41 devices or add “TR” to part number for tape and reel.2981 AND29828-CHANNELSOURCE DRIVERSNOTES: 1.Exact body and lead configuration at vendor’s option within limits shown.2.Lead spacing tolerance is non-cumulative.3.Supplied in standard sticks/tubes of 37 devices or add “TR” to part number for tape and reel.2981 AND 29828-CHANNELSOURCE DRIVERS115 Northeast Cutoff, Box 15036Worcester, Massachusetts 01615-0036 (508) 853-500010Copyright ©1977, 2007, Allegro MicroSystems, Inc.The products described here are manufactured under one or more U.S. patents or U.S. patents pending.Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the information being relied upon is current.Allegro’s products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system.The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use; nor for any infringement of patents or other rights of third parties which may result from its use.For the latest version of this document, visit our website:元器件交易网。
MIC298182YWM;MIC298182YN;MIC298182BN;MIC298182BWM;中文规格书,Datasheet资料
June 20051MIC2981/2982Functional DiagramsOUT1OUT2OUT3OUT4–OUT7OUT84IN1IN2IN3IN4–IN7IN8GNDV SOUTTypical MIC2891/2982 Source DriverMicrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • /MIC2981/2982Micrel, Inc.MIC2981/29822June 2005Pin ConfigurationIN2OUT2IN3OUT3IN4OUT4IN5OUT5IN6OUT6IN7OUT7IN1OUT1IN8OUT8V S GND18-Pin DIP (N)18-Pin Wide SOP (WM)Pin No.Pin No.Pin NamePin Function1–8IN1–IN8Input 1 through Input 8: Base drive to driver input transistor.9V S Supply Input 10GND Ground11–18OUT8–OUT1Output 8 through Output 1: Emitter of Darlington driver output.Pin Description/MIC2981/2982Micrel, Inc.Absolute Maximum RatingsSupply Voltage (V S) (50V)Output Voltage (V CE) (50V)Continuous Output Current (I C)................................500mA Input Voltage (V IN)MIC2981/82 (30V)Ground Current (I GND)....................................................3A Junction Temperature (T J)......................................+150°C Storage Temperature (T S).......................–65°C to +150°C Operating RatingsSupply Voltage (V S)............................................5V to 50V Ambient Temperature (T A).........................–40°C to +85°C Package Thermal ResistancePDIP θJA..............................................................56°C/W SOP θJA..............................................................84°C/WElectrical Characteristics(Note 3)V S = 50V, T A = +25°C, unless noted.Symbol Parameter Condition Min Typ Max UnitsI CEX Output Leakage Current V IN = 0.4V, T A = +70°C, Note 1200µAV CE(sus)Output Sustaining Voltage I OUT = 45mA35V V CE(sat)Collector-Emitter Saturation Voltage V IN = 2.4V, I OUT = 100mA 1.7 2.0VV IN = 2.4V, I OUT = 225mA 1.8 2.1VV IN = 2.4V, I OUT = 350mA 1.9 2.2VI IN(on)Input Current MIC2981V IN = 2.4V140200µAV IN = 3.85310450µAMIC2982V IN = 2.4V140200µAV IN = 12V 1.25 1.93mAI OUT Output Source Current V IN = 2.4V, V CE = 2.2V350mAI S Supply Current V IN = 2.4, OUT1–8 = open, Note 110mAt ON Turn-On Delay0.5E IN to 0.5E OUT, R L = 100Ω, V S = 35V, 1.0 2.0µs t OFF Turn-Off Delay0.5E IN to 0.5E OUT, R L = 100Ω, V S = 35V, 5.010µsNote 2I R Clamp Diode Leakage Current V R = 50V, V IN = 0.4V, Note 150µAV F Clamp Diode Forward Voltage I F = 350mA 1.5 2.0VGeneral Note:Devices are ESD protected; however, handling precautions are recommended.Note 1:Applied to all 8 inputs simultaneously.Note 2:Load conditions affect turnoff delay.Note 3:Specification for packaged product only./June 20053MIC2981/2982MIC2981/2982Micrel, Inc.MIC2981/29824June 2005Package Information18-Pin Plastic DIP (N)18-Pin Wide SOP (WM)MICREL INC.2180 FORTUNE DRIVE SAN JOSE, CA 95131USATEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by Micrel for its use.Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnifyMicrel for any damages resulting from such use or sale.© 1999 Micrel Incorporated/分销商库存信息:MICRELMIC2981/82YWM MIC2981/82YN MIC2981/82BN MIC2981/82BWM。
LM298详细中文资料
NewWay298-M 电机驱动模块用户说明手册产品特点：●采用全新原装L298N芯片设计，双H桥能够驱动2路直流或者1路步进电机，峰值驱动电流达4A●6路输入信号全部采用光耦隔离，保护控制控制端不受电机的影响，使得系统安全可靠●可通过编码器选择关闭或者打开光耦隔离功能，能够兼容多种系统设计，随意切换●模块可自己提供5V逻辑电压，使您的系统设计更加简洁，让您更专注于是用模块而不是重新设计模块●采用特殊的电路设计，真正兼容5-42V系统，接线简单可靠●系统自带开关更加安全可靠●全部输入输出端口均采用旋接形式，5.08mm标准工业接口，模块上无插针，安全可靠，真正为控制电机而设计，特别适合工业应用●整个模块均采用机器自动焊接，采用加厚PCB设计，军工品质，值得信赖简介NewWay298-M电机驱动模块是NewWay电子精心打造的一款电机驱动器，它能够很方便的驱动2路直流电机或者1路步进电机，使用简单。
模块上集成6路光耦控制器，完全隔离控制端与执行端的电气联系。
接口说明:控制信号端子：IN1：控制信号输入1，与EN1一起控制OUT1输出当EN1为高电平时，如果IN1（相对于VCCIN）输入高电平，OUT1将输出高电平（相对于GND），如果IN1（相对于VCCIN）输入低电平，OUT1将输出低电平（相对于GND），IN1输入电压范围0-VCCIN 伏特。
IN2：控制信号输入2，与EN1一起控制OUT2输出当EN1为高电平时，如果IN2（相对于VCCIN）输入高电平，OUT2将输出高电平（相对于GND），如果IN2（相对于VCCIN）输入低电平，OUT2将输出低电平（相对于GND），IN2输入电压范围0-VCCIN 伏特。
IN3：控制信号输入3，与EN2一起控制OUT3输出当EN2为高电平时，如果IN3（相对于VCCIN）输入高电平，OUT3将输出高电平（相对于GND），如果IN3（相对于VCCIN）输入低电平，OUT3将输出低电平（相对于GND），IN3输入电压范围0-VCCIN 伏特。
MICRF211AYQS中文资料
Ordering Information
Part Number
Temperature Range
Package
MICRF211AYQS
–40° to +105°C
16-Pin QSOP
_______________________________________________________________________________________________
Not Connected (Connect to Ground)
Reference resonator input connection to Colpitts oscillator stage, 7pF, in parallel with low resistance MOS switch-to-GND, during normal operation. Driven by startup excitation circuit during the internal startup control sequence.
元器件交易网
CRF211
3V, QwikRadio® 433.92 MHz Receiver
General Description
Features
Micrel MIC28512 70V 2A 同步降压电源评估板说明书
MIC28512 Evaluation Board70V/2A Synchronous Buck RegulatorGeneral DescriptionMicrel’s MIC28512 is a synchronous step-down regulatorfeaturing unique adaptive on-time control architecture withintegrated power MOSFETs. The MIC28512 operates overan input supply range of 4.6V to 70V, and can be used tosupply up to 2A of output current. The output voltage isadjustable down to 0.8V with a guaranteed accuracy of±1% from 0°C to 85°C. The device operates with aprogrammable switching frequency from 200kHz to680kHz (nominal).The MIC28512-1 uses the HyperLight Load®architectureto operate in pulse-skipping mode at light load whilefunctioning in fixed-frequency CCM mode from mediumload to heavy load. The MIC28512-2 utilizes Hyper SpeedControl TM architecture, operating in fixed-frequency CCMmode under all load conditions.Datasheets and support documentation are available onMicrel’s web site at: .RequirementsThe MIC28512 evaluation board requires only a singlepower supply with at least 5A current capability. Forapplications where V IN is less than +5.5V, the internal LDOcan be bypassed by tying VDD to VIN.PrecautionsThe MIC28512 evaluation board does not have reversepolarity protection. Applying a negative voltage to the VINand GND terminals can damage the device. The maximumV IN of the board is rated at 70V; exceeding 70V candamage the device.Ordering InformationPart Number DescriptionMIC28512-1YML EVMIC28512 Evaluation BoardMIC28512-2YML EVEvaluation BoardGetting Started1. Connect VIN SupplyConnect a supply to the VIN and GND terminals, paying careful attention to the polarity and the supply range (4.6V < V IN < 70V). Monitor I IN with a current meter and monitor input voltage at VIN and GND terminals with a voltmeter. Do not apply power until Step 4. 2. Connect Load and Monitor InputConnect a load to the VOUT and GND terminals. The load can be either a passive or an active electronic load. A current meter can be placed between theVOUT terminal and load to monitor the output current. Ensure the output voltage is monitored at the VOUT terminal. 3. Enable InputThe EN terminal has an on board 100k Ω pull-up resistor (R16) to VIN, which allows the output to be turned on when PVDD exceeds its UVLO threshold. An EN (J16) connector is provided on the evaluation board for ease-of-access to the enable feature.Applying an external logic signal on the EN terminal to pull it low or using a jumper to short the EN terminal to the GND terminal will disable the MIC28512 evaluation board. 4. Apply PowerApply V IN and verify that the output voltage regulates to the set voltage.Evaluation Board DescriptionThe basic parameters of the evaluation board are: • Input range: 4.6V to 70V• Output range: 0.8V to 0.85V × V IN at 2A.(For more detailed information, refer to TypicalCharacteristics section. Note that 0.85V is the maximum duty cycle of the MIC28512 controller) • 300kHz switching frequency (Adjustable 200kHz to 680kHz)Feedback ResistorsWith Jumper J11 in place, the output voltage is set to 5.0V as determined by the feedback dividers R1 and R11. Jumper J8 sets the output voltage to 3.3V. With jumper J7 in place the output is set by modifying R9, as illustrated in Equation 1:+×=9R 1R 1V V REF OUTEq. 1Where:V REF = 0.8V, and R1 is 10.0kΩ.With jumpers J11, J8, and J7 removed, the output regulates at the 0.8V reference voltage. All other voltages not listed can be set by modifying R9 with Jumper J7 installed according to Equation 2:REFOUT REFV V V R1R9-×=Eq. 2Jumper J12 shorts out the feedback and forces the converter to operate open loop and approach 100% duty cycle.SW NodeUse test point J1 (V SW ) for monitoring the power MOSFET switching waveform.Current LimitThe MIC28512 uses the R DS(ON) and external resistor connected from ILIM to the SW node to decide the current limit (see Figure 1).Figure 1. MIC28512 Current-Limiting CircuitIn each switching cycle of the MIC28512 converter theinductor current is sensed by monitoring the low-side MOSFET in the OFF period. The sensed voltage V (ILIM) is compared with the power ground (PGND) after a blanking time of 150ns. In this way, the drop voltage over the resistor R22 (V CL ) is compared with the drop over the bottom FET generating the short current limit. The small capacitor (C18) connected from ILIM to PGND filters the switching node ringing during the off time which allows a better short-limit measurement. The time constant created by R22 and C18 should be much less than the minimum off time.The V CL drop allows programming of short limit through the value of the resistor (R22). If the absolute value of the voltage drop on the bottom FET is greater than V CL , V (ILIM)is lower than PGND and a short-circuit event is triggered.A “hiccup” soft-start cycle is generated, reducing the stress on the power switching FETs while protecting the load and supply during severe short conditions.The short circuit current limit can be programmed by using Equation 3:()CLCLDS(ON)PP L CLIM I V R )5.0ΔI (I 22R +××=- Eq. 3Where:I CLIM = Desired current limitR DS(ON) = On-resistance of low-side power MOSFET, 28mΩ typicallyV CL = Current-limit threshold (typical absolute value is 14mV, per the Electrical Characteristics section in the MIC28512 datasheet)I CL = Current-limit source current (typical value is 70µA, per the Electrical Characteristics section in the MIC28512 datasheet).ΔI L(PP) = Inductor current peak-to-peak The peak-to-peak inductor current ripple is:Lf V )V (V V I sw IN(MAX)OUT IN(MAX)OUT L(PP)×××=∆-Eq. 4In case of hard short, the short current-limit threshold (V CL )is reduced by half to the short-circuit threshold. This allowsan indefinite hard short on the output without any destructive effect. It is critical to make sure that theinductor current used to charge the output capacitance during soft start is below the foldback short-circuit level; otherwise the supply can go into hiccup mode and latch up at start up. This should be verified over the operating temperature range as well.The MOSFET R DS(ON) varies 30% to 40% with temperature. Therefore, it is recommended to add a 50% margin to I CL in Equation 4 to avoid false current limiting due to increased MOSFET junction temperature rise. Table 1 shows typical output current limit value for a given R22.Table 1. R22 Typical Output Current-Limit ValueR22 Typical Output Current Limit (V IN = 12V, V OUT = 5V, L = 8.2µH)2.21kΩ 4.3A 1.82kΩ3.0AThe MIC28512 evaluation board was designed with a 8.2µH inductor for operation at 300kHz at 5V output. The typical value of R WINDING(DCR) of this particular inductor is 44mΩ.Setting the Switching FrequencyThe MIC28512 switching frequency can be adjusted by changing the value of resistor R17. The top resistor (R19) is set at 100kΩand is connected between VIN and FREQ. R4 is connected from the FREQ input to PGND and sets the switching frequency according to Equation 4.Figure 2. Switching Frequency Adjustment17R 19R 17R f f O ADJ _SW +×=Eq. 4Where:f O = Switching frequency when R17 is open, per the Electrical Characteristics section in the MIC28512 datasheet.For a more precise setting, it is recommended to use the Figure 3:Figure 3. Switching Frequency vs. R17Typical Characteristics1020304050607080901000.010.1110E F F I C I E N C Y (%)OUTPUT CURRENT (A)Efficiency (VIN = 12V)vs. Output Current MIC28512-15.0V 3.3Vf SW = 300kHz1020304050607080901000.010.1110E F F I C I E N C Y (%)OUTPUT CURRENT (A)Efficiency (VIN = 24V)vs. Output Current MIC28512-15.0V 3.3Vf SW = 300kHz1020304050607080901000.010.1110E F F I C I E N C Y (%)OUTPUT CURRENT (A)Efficiency (VIN = 48V)vs. Output Current MIC28512-15.0V 3.3Vf SW = 300kHz0.00.51.01.52.02.52540557085100O U T P U T C U R R E N T (A )AMBIENT TEMPERATURE (°C)12V Input Thermal DeratingMIC28512-15.0V 3.3VV IN = 12V f SW = 300kHz T J(MAX) =125°C θJA = 30°C/W0.00.51.01.52.02.52540557085100O U T P U T C U R R E N T (A )AMBIENT TEMPERATURE (°C)24V Input Thermal DeratingMIC28512-15.0V 3.3VV IN = 24V f SW = 300kHz T J(MAX) =125°C θJA = 30°C/W0.00.51.01.52.02.52540557085100O U T P U T C U R R E N T (A )AMBIENT TEMPERATURE (°C)48V Input Thermal DeratingMIC28512-15.0V 3.3VV IN = 48V f SW = 300kHz T J(MAX) =125°C θJA = 30°C/W0.00.20.40.60.81.00.511.52I C P O W E R D I S S I P A T I O N (W )OUTPUT CURRENT (A)IC Power Dissipationvs. Output Current MIC28512-15.0V 3.3VV IN =12V f SW = 300kHz0.00.20.40.60.81.01.200.51 1.52I C P O W E R D I S S I P A T I O N (W )OUTPUT CURRENT (A)IC Power Dissipationvs. Output Current MIC28512-1Vin =24V f SW = 300kHz 5.0V3.3VV IN = 24V = 300kHz0.00.40.81.21.62.02.400.51 1.52I C P O W E R D I S S I P A T I O N (W )OUTPUT CURRENT (A)IC Power Dissipationvs. Output Current MIC28512-1Vin =24V f SW = 300kHz 5.0V 3.3VV IN = 48V= 300kHzTypical Characteristics (Continued)1020304050607080901000.010.1110E F F I C I E N C Y (%)OUTPUT CURRENT (A)Efficiency (VIN = 12V)vs. Output Current MIC28512-25.0V 3.3Vf SW = 300kHz1020304050607080901000.010.1110E F F I C I E N C Y (%)OUTPUT CURRENT (A)Efficiency (VIN = 24V)vs. Output Current MIC28512-25.0V 3.3Vf SW = 300kHz1020304050607080901000.010.1110E F F I C I E N C Y (%)OUTPUT CURRENT (A)Efficiency (VIN = 48V)vs. Output Current MIC28512-25.0V 3.3Vf SW = 300kHz0.00.51.01.52.02.52540557085100O U T P U T C U R R E N T (A )AMBIENT TEMPERATURE (°C)12V Input Thermal DeratingMIC28512-25.0V 3.3VV IN = 12V f SW = 300kHz T J(MAX) =125°C θJA = 30°C/W0.00.51.01.52.02.52540557085100O U T P U T C U R R E N T (A )AMBIENT TEMPERATURE (°C)24V Input Thermal DeratingMIC28512-25.0V 3.3VV IN = 24V f SW = 300kHz T J(MAX) =125°C θJA = 30°C/W0.00.51.01.52.02.52540557085100O U T P U T C U R R E N T (A )AMBIENT TEMPERATURE (°C)48V Input Thermal DeratingMIC28512-25.0V 3.3VV IN = 48V f SW = 300kHz T J(MAX) =125°C θJA = 30°C/W0.00.20.40.60.81.00.511.52I C P O W E R D I S S I P A T I O N (W )OUTPUT CURRENT (A)IC Power Dissipationvs. Output Current MIC28512-25.0V 3.3VV IN = 12V f SW = 300kHz0.00.20.40.60.81.01.200.51 1.52I C P O W E R D I S S I P A T I O N (W )OUTPUT CURRENT (A)IC Power Dissipationvs. Output Current MIC28512-2Vin =24V 5.0V 3.3VV IN = 24V f SW = 300kHz0.00.40.81.21.62.02.400.51 1.52I C P O W E R D I S S I P A T I O N (W )OUTPUT CURRENT (A)IC Power Dissipationvs. Output Current MIC28512-2Vin =24V 5.0V 3.3VV IN =48V f SW = 300kHzEvaluation Board SchematicBill of MaterialsItem Part Number Manufacturer Description Qty. C1 UVZ2A330MPD Nichicon(1)33µF/100V 20% Radial Aluminum Capacitor 1 C2, C3 12061Z475KAT2A AVX(2) 4.7µF/100V, X7S, Size 1206 Ceramic Capacitor 2 C4, C7 C1608X7R1A225K080AC TDK(3) 2.2µF/10V, X7R, Size 0603 Ceramic Capacitor 2 C5, C11, C13,C18, C19, C20,C21Open NA C6, C16 C0603C104K8RACTU Kemet(4)0.1µF/10V, X7R, Size 0603 Ceramic Capacitor 2C9 GRM21BR72A474KA73 Murata(5)0.47µF/100V, X7R, Size 0805 Ceramic Capacitor 1 08051C474KAT2A AVXC10, C17 GRM188R72A104KA35D Murata 0.1µF/100V, X7R, Size 0603 Ceramic Capacitor 2 C12 CGA3E2X7R1H102K TDK 1nF/50V, X7R, Size 0603 Ceramic Capacitor 1 Notes:1. Nichicon: www.nichicon.co.jp/english.2. AVX: .3. TDK: .4. Kemet.: .5. Murata: .Bill of Materials (Continued)Item Part Number Manufacturer Description Qty. C14, C15 GRM32ER71A476KE15L Murata 47µF/10V, X7R, Size 1210 Ceramic Capacitor 2 D1 BAT46W-TP MCC(6)100V Small Signal Schottky Diode, SOD123 1 D3 Open NA J1, J7, J8,J10 − J12,J16 − J1877311-118-02LF FCI(7)CONN HEADER 2POS VERT T/H 9 L1 XAL7030-822MED Coilcraft(8)8.2µH, 10.2A Saturation Current 1 R1 CRCW060310K0FKEA Vishay Dale(9)10.0kΩ, Size 0603, 1% Resistor 1 R2, R9, R25, R26 Open NA R10 CRCW06033K24FKEA Vishay Dale 3.24kΩ, Size 0603, 1% Resistor 1 R11 CRCW06031K91FKEA Vishay Dale 1.91kΩ, Size 0603, 1% Resistor 1 R14, R15 CRCW06030000FKEA Vishay Dale 0.0 Ω, Size 0603, Resistor Jumper 2 R3, R16,R17, R19CRCW0603100K0FKEA Vishay Dale 100kΩ, Size 0603, 1% Resistor 4 R18 CRCW06031K00JNEA Vishay Dale 1.0kΩ, Size 0603, 5% Resistor 1 R20, R21 CRCW060349R9FKEA Vishay Dale 49.9Ω, Size 0603, 1% Resistor 2 R22 CRCW06032K21FKEA Vishay Dale 2.21kΩ, Size 0603, 1% Resistor 1 R23 CRCW08051R21FKEA Vishay Dale 1.21Ω, Size 0805, 1% Resistor 1 R24 CRCW060340R0FKEA Vishay Dale 40.0Ω, Size 0603, 1% Resistor 1 TP7, TP14,TP8, TP13,TP17, TP18Open NATP9 − TP12 1502KeystoneElectronics(10)Test Point Turret, .090 4U1 MIC28512-1YFLMicrel. Inc.(11)70V/2A Synchronous Buck Regulator 1 MIC28512-2YFLNotes:6. MCC: .7. FCI: .8. Coilcraft: .9. Vishay Dale: .10. Keystone Electronics: .11. Micrel, Inc.: .Evaluation Board Layout RecommendationsEvaluation Board Layout Recommendations (Continued)MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USATEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB Micrel, Inc. is a leading global manufacturer of IC solutions for the worldwide high-performance linear and power, LAN, and timing & communications markets. The Company’s products include advanced mixed-signal, analog & power semiconductors; high-performance communication, clock management, MEMs-based clock oscillators & crystal-less clock generators,Ethernet switches, and physical layer transceiver ICs. Company customers include leading manufacturers of enterprise, consumer, industrial, mobile, telecommunications, automotive, and computer products. Corporation headquarters and state-of-the-art wafer fabrication facilities are located in San Jose, CA, with regional sales and support offices and advanced technology design centers situated throughout the Americas, Europe, and Asia. Additionally, the Company maintains an extensive network of distributors and reps worldwide.Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this datasheet. This information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry, specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale.© 2015 Micrel, Incorporated.。
LP2981IM5X-3.3资料
LP2981Micropower 100mA Ultra Low-Dropout RegulatorGeneral DescriptionThe LP2981is a 100mA,fixed-output voltage regulator de-signed specifically to meet the requirements of battery-powered applications.Using an optimized VIP ™(Vertically Integrated PNP)pro-cess,the LP2981delivers unequaled performance in all specifications critical to battery-powered designs:Dropout Voltage.Typically 200mV @100mA load,and 7mV @1mA load.Ground Pin Current.Typically 600µA @100mA load,and 80µA @1mA load.Sleep Mode.Less than 1µA quiescent current when ON/OFF pin is pulled low.Smallest Possible Size.SOT-23and micro SMD packages use an absolute minimum board space.Precision Output.0.75%tolerance output voltages avail-able (A grade).Eleven voltage options,from 2.5V to 5.0V,are available as standard products.Featuresn Ultra low dropout voltagen Output voltage accuracy 0.75%(A Grade)n Guaranteed 100mA output currentn Smallest possible size (SOT-23,micro SMD package)n <1µA quiescent current when shutdown n Low ground pin current at all load currents n High peak current capability (300mA typical)n Wide supply voltage range (16V max)n Fast dynamic response to line and load n Low Z OUT over wide frequency range n Overtemperature/overcurrent protectionn−40˚C to +125˚C junction temperature rangeApplicationsn Cellular Phonen Palmtop/Laptop Computern Personal Digital Assistant (PDA)nCamcorder,Personal Stereo,CameraBlock DiagramVIP ™is a trademark of National Semiconductor Corporation.DS012506-1March 2000LP2981Micropower 100mA Ultra Low-Dropout Regulator©2000National Semiconductor Corporation Connection DiagramsOrdering InformationTABLE 1.Package Marking and Order InformationOutput Voltage(V)GradeOrder InformationPackage Marking Supplied as:5-Lead Small Outline Package (M5)2.5A LP2981AIM5X-2.5L0CA 3000Units on Tape and Reel 2.5A LP2981AIM5-2.5L0CA 1000Units on Tape and Reel 2.5STD LP2981IM5X-2.5L0CB 3000Units on Tape and Reel 2.5STD LP2981IM5-2.5L0CB 1000Units on Tape and Reel 2.7A LP2981AIM5X-2.7L0DA 3000Units on Tape and Reel 2.7A LP2981AIM5-2.7L0DA 1000Units on Tape and Reel 2.7STD LP2981IM5X-2.7L0DB 3000Units on Tape and Reel 2.7STD LP2981IM5-2.7L0DB 1000Units on Tape and Reel 2.8A LP2981AIM5X-2.8L77A 3000Units on Tape and Reel 2.8A LP2981AIM5-2.8L77A 1000Units on Tape and Reel 2.8STD LP2981IM5X-2.8L77B 3000Units on Tape and Reel 2.8STD LP2981IM5-2.8L77B 1000Units on Tape and Reel 2.9A LP2981AIM5X-2.9L0VA 3000Units on Tape and Reel 2.9A LP2981AIM5-2.9L0VA 1000Units on Tape and Reel 2.9STD LP2981IM5X-2.9L0VB 3000Units on Tape and Reel 2.9STD LP2981IM5-2.9L0VB 1000Units on Tape and Reel3.0A LP2981AIM5X-3.0L05A 3000Units on Tape and Reel 3.0A LP2981AIM5-3.0L05A 1000Units on Tape and Reel 3.0STD LP2981IM5X-3.0L05B 3000Units on Tape and Reel 3.0STD LP2981IM5-3.0L05B 1000Units on Tape and Reel 3.1A LP2981AIM5X-3.1L38A 3000Units on Tape and Reel 3.1A LP2981AIM5-3.1L38A 1000Units on Tape and Reel 3.1STD LP2981IM5X-3.1L38B 3000Units on Tape and Reel 3.1STD LP2981IM5-3.1L38B 1000Units on Tape and Reel 3.2A LP2981AIM5X-3.2L35A 3000Units on Tape and Reel 3.2A LP2981AIM5-3.2L35A 1000Units on Tape and Reel 3.2STD LP2981IM5X-3.2L35B 3000Units on Tape and Reel 3.2STD LP2981IM5-3.2L35B 1000Units on Tape and Reel 3.3A LP2981AIM5X-3.3L04A 3000Units on Tape and Reel 3.3A LP2981AIM5-3.3L04A 1000Units on Tape and Reel 3.3STD LP2981IM5X-3.3L04B 3000Units on Tape and Reel 3.3STDLP2981IM5-3.3L04B1000Units on Tape and Reel5-Lead Small Outline Package (M5)DS012506-2Top ViewSee NS Package Number MF05A For ordering information see Table 1micro SMD,5Bump Package (BPA05)DS012506-50Bottom ViewSee NS Package Number BPA05L P 2981 2Ordering Information(Continued)TABLE1.Package Marking and Order Information(Continued)Output Voltage(V)Grade Order Information PackageMarkingSupplied as:5-Lead Small Outline Package(M5)3.6A LP2981AIM5X-3.6L0JA3000Units on Tape and Reel3.6A LP2981AIM5-3.6L0JA1000Units on Tape and Reel3.6STD LP2981IM5X-3.6L0JB3000Units on Tape and Reel3.6STD LP2981IM5-3.6L0JB1000Units on Tape and Reel3.8A LP2981AIM5X-3.8L36A3000Units on Tape and Reel3.8A LP2981AIM5-3.8L36A1000Units on Tape and Reel3.8STD LP2981IM5X-3.8L36B3000Units on Tape and Reel3.8STD LP2981IM5-3.8L36B1000Units on Tape and Reel4.0A LP2981AIM5X-4.0L0ZA3000Units on Tape and Reel4.0A LP2981AIM5-4.0L0ZA1000Units on Tape and Reel4.0STD LP2981IM5X-4.0L0ZB3000Units on Tape and Reel4.0STD LP2981IM5-4.0L0ZB1000Units on Tape and Reel4.7A LP2981AIM5X-4.7L0GA3000Units on Tape and Reel4.7A LP2981AIM5-4.7L0GA1000Units on Tape and Reel4.7STD LP2981IM5X-4.7L0GB3000Units on Tape and Reel4.7STD LP2981IM5-4.7L0GB1000Units on Tape and Reel5.0A LP2981AIM5X-5.0L03A3000Units on Tape and Reel5.0A LP2981AIM5-5.0L03A1000Units on Tape and Reel5.0STD LP2981IM5X-5.0L03B3000Units on Tape and Reel5.0STD LP2981IM5-5.0L03B1000Units on Tape and Reelmicro SMD,5Bump Package(BPA05)2.5A LP2981AIBP-2.5250Units on Tape and Reel2.5A LP2981AIBPX-2.53000Units on Tape and Reel2.5STD LP2981IBP-2.5250Units on Tape and Reel2.5STD LP2981IBPX-2.53000Units on Tape and Reel3.2A LP2981AIBP-3.2250Units on Tape and Reel3.2A LP2981AIBPX-3.23000Units on Tape and Reel3.2STD LP2981IBP-3.2250Units on Tape and Reel3.2STD LP2981IBPX-3.23000Units on Tape and Reel3.3A LP2981AIBP-3.3250Units on Tape and Reel3.3A LP2981AIBPX-3.33000Units on Tape and Reel3.3STD LP2981IBP-3.3250Units on Tape and Reel3.3STD LP2981IBPX-3.33000Units on Tape and ReelLP29813Absolute Maximum Ratings(Note1)If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.Storage Temperature Range−65˚C to+150˚C Operating Junction TemperatureRange−40˚C to+125˚C Lead Temperature(Soldering,5sec.)260˚C ESD Rating(Note2)2kV Power Dissipation(Note3)Internally Limited Input Supply Voltage(Survival)−0.3V to+16V Input Supply Voltage(Operating) 2.1V to+16V Shutdown Input Voltage(Survival)−0.3V to+16V Output Voltage(Survival,(Note4))−0.3V to+9V I OUT(Survival)Short Circuit Protected Input-Output Voltage(Survival,(Note5))−0.3V to+16VElectrical CharacteristicsLimits in standard typeface are for T J=25˚C,and limits in boldface type applyover the full operating temperature range.Un-less otherwise specified:V IN=V O(NOM)+1V,C IN=1µF,I L=1mA,C OUT=4.7µF,V ON/OFF=2V.Symbol Parameter Conditions Typ LP2981AI-XX LP2981I-XX Units(Note6)(Note6)Min Max Min Max∆V O Output VoltageTolerance I L=1mA−0.750.75−1.25 1.25%V NOM 1mA<I L<100mA−1.0 1.0−2.0 2.0−2.5 2.5−3.53.5Electrical Characteristics(Continued)Note 1:Absolute maximum ratings indicate limits beyond which damage to the component may occur.Electrical specifications do not apply when operating the de-vice outside of its rated operating conditions.Note 2:The ESD rating of pins 3and 4is 1kV.Note 3:The maximum allowable power dissipation is a function of the maximum junction temperature,T J(MAX),the junction-to-ambient thermal resistance,θJA ,and the ambient temperature,T A .The maximum allowable power dissipation at any ambient temperature is calculated using:The value of θJA for the SOT-23package is 220˚C/W and the micro SMD package is 320˚C/W.Exceeding the maximum allowable power dissipation will cause ex-cessive die temperature,and the regulator will go into thermal shutdown.Note 4:If used in a dual-supply system where the regulator load is returned to a negative supply,the LP2981output must be diode-clamped to ground.Note 5:The output PNP structure contains a diode between the V IN and V OUT terminals that is normally reverse-biased.Reversing the polarity from V IN to V OUT will turn on this diode (see Application Hints).Note 6:Limits are 100%production tested at 25˚C.Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control (SQC)methods.The limits are used to calculate National’s Average Outgoing Quality Level (AOQL).Note 7:Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below the value measured with a 1V differential.Note 8:The ON/OFF inputs must be properly driven to prevent misoperation.For details,refer to Application Hints.Note 9:See Typical Performance Characteristics curves.Basic Application CircuitDS012506-4*ON/OFF input must be actively terminated.Tie to V IN if this function is not to be used.**Minimum Output Capacitance is shown to insure stability over full load current range.More capacitance provides superior dynamic performance andadditional stability margin (see Application Hints).***Do not make connections to this pin.LP29815Typical Performance CharacteristicsUnless otherwise specified:T A =25˚C,V IN =V O(NOM)+1V,C OUT =4.7µF,C IN =1µF all voltage options,ON/OFF pin tied to V IN .Output Voltage vs TemperatureDS012506-6Output Voltage vs TemperatureDS012506-7Output Voltage vs TemperatureDS012506-8Dropout CharacteristicsDS012506-9Dropout Characteristics DS012506-10Dropout CharacteristicsDS012506-11L P 2981 6Typical Performance Characteristics Unless otherwise specified:TA=25˚C,V IN=V O(NOM)+1V, C OUT=4.7µF,C IN=1µF all voltage options,ON/OFF pin tied to V IN.(Continued)Dropout Voltage vsTemperatureDS012506-12Dropout Voltage vsLoad CurrentDS012506-13Ground Pin Current vsTemperatureDS012506-14Ground Pin Current vsLoad CurrentDS012506-15Input Current vs V INDS012506-16Input Current vs V INDS012506-17LP29817Typical Performance CharacteristicsUnless otherwise specified:T A =25˚C,V IN =V O(NOM)+1V,C OUT =4.7µF,C IN=1µF all voltage options,ON/OFF pin tied to V IN .(Continued)Line Transient ResponseDS012506-18Line Transient ResponseDS012506-19Load Transient Response DS012506-20Load Transient ResponseDS012506-21Load Transient Response DS012506-22Load Transient ResponseDS012506-23L P 2981 8Typical Performance Characteristics Unless otherwise specified:TA=25˚C,V IN=V O(NOM)+1V, C OUT=4.7µF,C IN=1µF all voltage options,ON/OFF pin tied to V IN.(Continued)Short Circuit CurrentDS012506-24Instantaneous Short CircuitCurrent vs TemperatureDS012506-25Short Circuit CurrentDS012506-26Instantaneous Short CircuitCurrent vs Output VoltageDS012506-27Output Impedance vsFrequencyDS012506-28Ripple RejectionDS012506-29LP29819Typical Performance CharacteristicsUnless otherwise specified:T A =25˚C,V IN =V O(NOM)+1V,C OUT =4.7µF,C IN =1µF all voltage options,ON/OFF pin tied to V IN .(Continued)Output Noise DensityDS012506-30Output Impedance vs FrequencyDS012506-31Input to Output Leakage vs TemperatureDS012506-32Output Reverse Leakage vs TemperatureDS012506-33Turn-On Waveform DS012506-34Turn-Off WaveformDS012506-35L P 2981 10Typical Performance Characteristics Unless otherwise specified:TA=25˚C,V IN=V O(NOM)+1V, C OUT=4.7µF,C IN=1µF all voltage options,ON/OFF pin tied to V IN.(Continued)Application HintsEXTERNAL CAPACITORSLike any low-dropout regulator,the external capacitors used with the LP2981must be carefully selected to assure regula-tor loop stability.INPUT CAPACITOR:An input capacitor whose value is ≥1µF is required with the LP2981(amount of capacitance can be increased without limit).This capacitor must be located a distance of not more than 0.5"from the input pin of the LP2981and returned to a clean analog ground.Any good quality ceramic or tantalum can be used for this capacitor.OUTPUT CAPACITOR:The output capacitor must meet both the requirement for minimum amount of capacitance and E.S.R.(equivalent series resistance)value.Curves are provided which show the allowable ESR range as a function of load current for various output voltages and capacitor val-ues(refer to Figures1,2,3,4).IMPORTANT:The output capacitor must maintain its ESR in the stable region over the full operating temperature range to assure stability.Also,capacitor tolerance and variation with temperature must be considered to assure the minimum amount of capacitance is provided at all times.This capacitor should be located not more than0.5"from the output pin of the LP2981and returned to a clean analog ground.CAPACITOR CHARACTERISTICSTANTALUM:Tantalum capacitors are the best choice for use with the LP2981.Most good quality tantalums can be used with the LP2981,but check the manufacturer’s data sheet to be sure the ESR is in range.It is important to remember that ESR increases at lower tem-peratures and a capacitor that is near the upper limit for sta-bility at room temperature can cause instability when it gets cold.In applications which must operate at very low temperatures, it may be necessary to parallel the output tantalum capacitor with a ceramic capacitor to prevent the ESR from going up too high(see next section for important information on ce-ramic capacitors).CERAMIC:Ceramic capacitors are not recommended for use at the output of the LP2981.This is because the ESR of a ceramic can be low enough to go below the minimum stable value for the LP2981.A2.2µF ceramic was measured and found to have an ESR of about15mΩ,which is low enough to cause oscillations.If a ceramic capacitor is used on the output,a1Ωresistor should be placed in series with the capacitor. ALUMINUM:Because of large physical size,aluminum elec-trolytics are not typically used with the LP2981.They must meet the same ESR requirements over the operating tem-perature range,more difficult because of their steep increase at cold temperature.An aluminum electrolytic can exhibit an ESR increase of as much as50X when going from20˚C to−40˚C.Also,some aluminum electrolytics are not operational below−25˚C be-cause the electrolyte can freeze.ON/OFF Pin Current vsV ON/OFFDS012506-36ON/OFF Thresholdvs TemperatureDS012506-37DS012506-38FIGURE1.5V/3.3µF ESR CurvesLP298111Application Hints(Continued)REVERSE CURRENT PATHThe power transistor used in the LP2981has an inherent di-ode connected between the regulator input and output (see below).If the output is forced above the input by more than a V BE ,this diode will become forward biased and current will flow from the V OUT terminal to V IN .This current must be limited to <100mA to prevent damage to the part.The internal diode can also be turned on by abruptly step-ping the input voltage to a value below the output voltage.To prevent regulator mis-operation,a Schottky diode should be used in any application where input/output voltage condi-tions can cause the internal diode to be turned on (see be-low).As shown,the Schottky diode is connected in parallel with the internal parasitic diode and prevents it from being turned on by limiting the voltage drop across it to about 0.3V.ON/OFF INPUT OPERATIONThe LP2981is shut off by pulling the ON/OFF input low,and turned on by driving the input high.If this feature is not to be used,the ON/OFF input should be tied to V IN to keep the regulator on at all times (the ON/OFF input must not be left floating).To ensure proper operation,the signal source used to drive the ON/OFF input must be able to swing above and below the specified turn-on/turn-off voltage thresholds which guar-antee an ON or OFF state (see Electrical Characteristics).The ON/OFF signal may come from either a totem-pole out-put,or an open-collector output with pull-up resistor to the LP2981input voltage or another logic supply.The high-level voltage may exceed the LP2981input voltage,but must re-main within the Absolute Maximum Ratings for the ON/OFF pin.It is also important that the turn-on/turn-off voltage signals applied to the ON/OFF input have a slew rate which is greater than 40mV/µs.Important:the regulator shutdown function will operate incor-rectly if a slow-moving signal is applied to the ON/OFF input.Micro SMD MountingThe micro SMD package requires specific mounting tech-niques which are detailed in National Semiconductor Appli-cation Note #1112.Referring to the section Surface Mount Technology (SMT)Assembly Considerations ,it should be noted that the pad style which must be used with the 5-pin package is the NSMD (non-solder mask defined)type.DS012506-39FIGURE 2.5V/10µF ESR CurvesDS012506-40FIGURE 3.3V/3.3µF ESR CurvesDS012506-42FIGURE 4.3V/10µF ESR CurvesDS012506-41DS012506-43L P 2981 12Application Hints(Continued)For best results during assembly,alignment ordinals on the PC board may be used to facilitate placement of the micro SMD device.Micro SMD Light SensitivityExposing the micro SMD device to direct sunlight will cause misoperation of the device.Light sources such as Halogen lamps can also affect electrical performance if brought near to the device.The wavelenghts which have the most detrimental effect arereds and infra-reds,which means that the fluorescent light-ing used inside most buildings has very little effect on perfor-mance.A micro SMD test board was brought to within1cmof a fluorescent desk lamp and the effect on the regulatedoutput voltage was negligible,showing a deviation of lessthan0.1%from nominal.LP298113Physical Dimensionsinches (millimeters)unless otherwise noted5-Lead Small Outline Package (M5)NS Package Number MF05AFor Order Numbers,refer to Table 1in the “Ordering Information”section of this document.L P 2981 14LP2981 Physical Dimensions inches(millimeters)unless otherwise noted(Continued)NOTES:UNLESS OTHERWISE SPECIFIED1.EPOXY COATING2.63Sn/37Pb EUTECTIC BUMP3.RECOMMEND NON-SOLDER MASK DEFINED LANDING PAD.4.PIN1IS ESTABLISHED BY LOWER LEFT CORNER WITH RESPECT TO TEXT ORIENTATION.REMAINING PINS ARE NUMBERED COUNTER CLOCKWISE.5.XXX IN DRAWING NUMBER REPRESENTS PACKAGE SIZE VARIATION WHERE X1IS PACKAGE WIDTH,X2IS PACK-AGE LENGTH AND X3IS PACKAGE HEIGHT.6.NO JEDEC REGISTRATION AS OF AUG.1999.micro SMD,5Bump Package(BPA05)NS Package Number BPA05AFor Order Numbers,refer to Table1in the“Order Information”section of this document.The dimensions for X1,X2and X3are as given:X1=0.930+/−0.030mmX2=1.107+/−0.030mmX3=0.850+/−0.050mm15NotesLIFE SUPPORT POLICYNATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION.As used herein:1.Life support devices or systems are devices or systems which,(a)are intended for surgical implant into the body,or (b)support or sustain life,and whose failure to perform when properly used in accordance with instructions for use provided in the labeling,can be reasonably expected to result in a significant injury to the user.2.A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system,or to affect its safety or effectiveness.National Semiconductor Corporation AmericasTel:1-800-272-9959Fax:1-800-737-7018Email:support@National Semiconductor EuropeFax:+49(0)180-5308586Email:europe.support@Deutsch Tel:+49(0)6995086208English Tel:+44(0)8702402171Français Tel:+33(0)141918790National Semiconductor Asia Pacific Customer Response Group Tel:65-2544466Fax:65-2504466Email:ap.support@National Semiconductor Japan Ltd.Tel:81-3-5639-7560Fax:81-3-5639-7507L P 2981M i c r o p o w e r 100m A U l t r a L o w -D r o p o u t R e g u l a t o rNational does not assume any responsibility for use of any circuitry described,no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.。
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Functional Diagrams
OUT1
OUT2
OUT3
OUT4–OUT7
OUT8
4
IN1IN2IN3
IN4–IN7
IN8GND
V S
OUT
Typical MIC2891/2982 Source Driver
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 •
Pin Configuration
IN1OUT1
IN2OUT2
IN3OUT3
IN4OUT4
IN5OUT5
IN6OUT6
IN7OUT7
IN8OUT8
V S GND
18-Pin DIP (N)
18-Pin Wide SOP (WM)
Pin Description
Pin No.Pin No.Pin Name Pin Function
1–8IN1–IN8Input 1 through Input 8: Base drive to driver input transistor.
9V S Supply Input
10GND Ground
11–18OUT8–OUT1Output 8 through Output 1: Emitter of Darlington driver output.
Absolute Maximum Ratings
Supply Voltage (V S) (50V)
Output Voltage (V CE) (50V)
Continuous Output Current (I C)................................500mA Input Voltage (V IN)
MIC2981/82 (30V)
Ground Current (I GND)....................................................3A Junction Temperature (T J)......................................+150°C Storage Temperature (T S).......................–65°C to +150°C Operating Ratings
Supply Voltage (V S)............................................5V to 50V Ambient Temperature (T A).........................–40°C to +85°C Package Thermal Resistance
PDIP θJA..............................................................56°C/W SOP θJA..............................................................84°C/W
Electrical Characteristics(Note 3)
V S = 50V, T A = +25°C, unless noted.
Symbol Parameter Condition Min Typ Max Units I CEX Output Leakage Current V IN = 0.4V, T A = +70°C, Note 1200µA V CE(sus)Output Sustaining Voltage I OUT = 45mA35V V CE(sat)Collector-Emitter Saturation Voltage V IN = 2.4V, I OUT = 100mA 1.7 2.0V
V IN = 2.4V, I OUT = 225mA 1.8 2.1V
V IN = 2.4V, I OUT = 350mA 1.9 2.2V I IN(on)Input Current MIC2981V IN = 2.4V140200µA
V IN = 3.85310450µA
MIC2982V IN = 2.4V140200µA
V IN = 12V 1.25 1.93mA I OUT Output Source Current V IN = 2.4V, V CE = 2.2V350mA I S Supply Current V IN = 2.4, OUT1–8 = open, Note 110mA t ON Turn-On Delay0.5E IN to 0.5E OUT, R L = 100Ω, V S = 35V, 1.0 2.0µs t OFF Turn-Off Delay0.5E IN to 0.5E OUT, R L = 100Ω, V S = 35V, 5.010µs
Note 2
I R Clamp Diode Leakage Current V R = 50V, V IN = 0.4V, Note 150µA V F Clamp Diode Forward Voltage I F = 350mA 1.5 2.0V
General Note:Devices are ESD protected; however, handling precautions are recommended.
Note 1:Applied to all 8 inputs simultaneously.
Note 2:Load conditions affect turnoff delay.
Note 3:Specification for packaged product only.
Package Information
18-Pin Plastic DIP (N)
18-Pin Wide SOP (WM)
MICREL INC.2180 FORTUNE DRIVE SAN JOSE, CA95131USA
TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB
This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by Micrel for its use.
Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify
Micrel for any damages resulting from such use or sale.
© 1999 Micrel Incorporated。