AMS1117-3.3 PDF 中文资料

AMS1117800mA LDO稳压器电路------AMS1117概述AMS1117是一款正电压输出低压差的三端线性稳压电路，在输出1A电流时，输入输出的电压差典型值为1.8V。

AMS1117分为两个版本，固定电压输出版本和可调电压输出版本，固定输出版本的输出电压可以为：1.8V，3.3V和5.0V，可调电压输出版本能提供的输出电压范围为：1.8V~5.5V。

AMS1117内部集成过热保护和限流电路,确保芯片和电源系统的稳定性。

该器件广泛适用于各种电子产品中。

特点�能提供包括固定电压输出版本（固定电压包括1.8V，3.3V，5V）跟三端可调电压输出版本�最高输出电流可达1A�输出电压精度高达2％�稳定工作电压范围为高达12V�限流功能�过热切断�温度范围：-20℃-120℃应用�膝上型电脑，掌上电脑和笔记本�电脑�电池充电器�电池供电系统�便携式设备内部框图极限参数参数符号范围单位输入工作电压V IN12V 引脚温度(焊接8秒)T Lead260℃工作结温范围T J-20~120℃储存温度T STG-65~+150℃功耗P D内部限制(注1)mw ESD能力(最小值)ESD2000V注1：最大允许功耗是最大工作结温TJ(max)，结对空热阻θJA和环境温度Tamb的函数。

最大允许功耗在给定的环境温度下，PD(max)=(TJ(max)-Tamb)/θJA，超过最大允许功耗会导致芯片温度过高，调整器因此会进入到过热切断状态。

不同封装类型的结对空热阻θJA是不同的，由封装技术决定。

推荐工作条件参数符号范围单位输入电压V IN3~9V 工作结温范围T J-20~+120℃电气特性(除非特别指定，否则黑色字体所示的参数，Tamb=25℃，正常工作结温范围-40℃~125℃。

)参数符号测试条件最小值典型值最大值单位基准电压VREFAMS1117-ADJ,IOUT=10mA,VIN-VOUT=2V,TJ=25℃,10mA≤IOUT≤800mA,1.4V≤VIN-VOUT≤10V1.2381.2251.2501.2501.2621.270V输出电压VOUT AMS1117-1.8,IOUT=10mA,VIN=3.8V,TJ=25℃,0≤IOUT≤800mA,3.2V≤VIN≤10V1.7821.7641.8001.8001.8181.836VAMS1117-3.3,IOUT=10mA,VIN=5V,TJ=25℃,0≤IOUT≤800mA,4.75V≤VIN≤10V3.2673.2353.3003.3003.3333.365VAMS1117-5.0,IOUT=10mA,VIN=7V,TJ=25℃,0≤IOUT≤800mA,6.5V≤VIN≤10V4.9504.9005.0005.0005.055.10V输出电压温度稳定性TSOUT0.3%线性调整Rline VINMIN≤VIN≤12V,VOUT=Fixed/Adj,IOUT=10mA37mV负载调整Rload 10mA≤IOUT≤1A,VOUT=Fixed/Adj612mV漏失电压Vdrop IOUT=100mA 1.00 1.20V管脚排列功能描述AMS1117是一个低漏失电压调整器，它的稳压调整管是由一个PNP驱动的NPN管组成的,漏失电压定义为：VDROP=VBE+VSAT。

1Features•For a newer drop-in alternative,see the TLV1117•Available in 1.8V,2.5V,3.3V,5V,and Adjustable Versions•Space-saving SOT-223and WSON packages •Current limiting and thermal protection •Output current:800mA•Line regulation:0.2%(maximum)•Load regulation:0.4%(maximum)•Temperature range:–LM1117:0°C to 125°C –LM1117I:−40°C to 125°C2Applications•AC drive power stage modules •Merchant network and server PSU •Industrial AC/DC •Ultrasound scanners•Servo drive control modules3DescriptionThe LM1117is a low dropout voltage regulator with a dropout of 1.2V at 800mA of load current.The LM1117is available in an adjustable version,which can set the output voltage from 1.25to 13.8V with only two external resistors.In addition,it is available in five fixed voltages,1.8V,2.5V,3.3V,and 5V.The LM1117offers current limiting and thermal shutdown.Its circuit includes a Zener trimmed bandgap reference to assure output voltage accuracy to within ±1%.A minimum of 10-µF tantalum capacitor is required at the output to improve the transient response and stability.Device Information (1)PART NUMBERPACKAGE BODY SIZE (NOM)LM1117,LM1117ISOT-223(4) 6.50mm ×3.50mm TO-220(3)14.986mm ×10.16mm TO-252(3) 6.58mm ×6.10mm WSON (8) 4.00mm ×4.00mm TO-263(3)10.18mm ×8.41mm(1)For all available packages,see the orderable addendum atthe end of the data sheet.Adjustable OutputRegulator找Memory 、FPGA 、二三极管、连接器、模块、光耦、电容电阻、单片机、处理器、晶振、传感器、 滤波器，上深圳市美光存储技术有限公司The case temperature is measured at the point where the leads contact with the mounting pad surfaceFigure22.Cross-Sectional View of Integrated Circuit Mounted on a Printed Circuit BoardLM1117SNOS412O –FEBRUARY 2000–REVISED JUNE 2020(1)Tab of device attached to topside copperThe LM1117regulators have internal thermal shutdown to protect the device from over-heating.Under all possible operating conditions,the junction temperature of the LM1117must be within the range of 0°C to 125°C.A heatsink may be required depending on the maximum power dissipation and maximum ambient temperature of the application.To determine if a heatsink is needed,the power dissipated by the regulator,P D ,must be calculated:I IN =I L +I G(2)P D =(V IN -V OUT )I L +V IN I G(3)Figure 23shows the voltages and currents which are present in thecircuit.TAPE AND REELINFORMATION*All dimensions arenominalDevicePackage Type Package Drawing Pins SPQReel Diameter (mm)Reel Width W1(mm)A0(mm)B0(mm)K0(mm)P1(mm)W (mm)Pin1Quadrant LM1117DTX-1.8/NOPB TO-252NDP 32500330.016.4 6.910.5 2.78.016.0Q2LM1117DTX-2.5/NOPB TO-252NDP 32500330.016.4 6.910.5 2.78.016.0Q2LM1117DTX-3.3/NOPB TO-252NDP 32500330.016.4 6.910.5 2.78.016.0Q2LM1117DTX-5.0/NOPB TO-252NDP 32500330.016.4 6.910.5 2.78.016.0Q2LM1117DTX-ADJ/NOPB TO-252NDP 32500330.016.4 6.910.5 2.78.016.0Q2LM1117IDTX-3.3/NOPB TO-252NDP 32500330.016.4 6.910.5 2.78.016.0Q2LM1117IDTX-5.0/NOPB TO-252NDP 32500330.016.4 6.910.5 2.78.016.0Q2LM1117IDTX-ADJ/NOPB TO-252NDP 32500330.016.4 6.910.5 2.78.016.0Q2LM1117ILD-ADJ/NOPB WSON NGN 81000178.012.4 4.3 4.3 1.38.012.0Q1LM1117IMP-3.3/NOPB SOT-223DCY 41000330.016.47.07.5 2.212.016.0Q3LM1117IMP-5.0/NOPBSOT-223DCY 41000330.016.47.07.5 2.212.016.0Q3LM1117IMP-ADJ/NOPB SOT-223DCY 41000330.016.47.07.5 2.212.016.0Q3LM1117IMPX-3.3/NOPB SOT-223DCY 42000330.016.47.07.5 2.212.016.0Q3LM1117IMPX-5.0/NOPB SOT-223DCY 42000330.016.47.07.5 2.212.016.0Q3LM1117IMPX-ADJ/NOPB SOT-223DCY 42000330.016.47.07.5 2.212.016.0Q3LM1117LD-1.8/NOPB WSON NGN 81000178.012.4 4.3 4.3 1.38.012.0Q1LM1117LD-2.5/NOPB WSON NGN 81000178.012.4 4.3 4.3 1.38.012.0Q1LM1117LD-3.3/NOPBWSONNGN81000178.012.44.34.31.38.012.0Q1PACKAGE MATERIALS INFORMATION12-May-2020。

AMS1117800mA LDO稳压器电路------AMS1117概述AMS1117是一款正电压输出低压差的三端线性稳压电路，在输出1A电流时，输入输出的电压差典型值为1.8V。

AMS1117分为两个版本，固定电压输出版本和可调电压输出版本，固定输出版本的输出电压可以为：1.8V，3.3V和5.0V，可调电压输出版本能提供的输出电压范围为：1.8V~5.5V。

AMS1117内部集成过热保护和限流电路,确保芯片和电源系统的稳定性。

该器件广泛适用于各种电子产品中。

特点�能提供包括固定电压输出版本（固定电压包括1.8V，3.3V，5V）跟三端可调电压输出版本�最高输出电流可达1A�输出电压精度高达2％�稳定工作电压范围为高达12V�限流功能�过热切断�温度范围：-20℃-120℃应用�膝上型电脑，掌上电脑和笔记本�电脑�电池充电器�电池供电系统�便携式设备内部框图极限参数参数符号范围单位输入工作电压V IN12V 引脚温度(焊接8秒)T Lead260℃工作结温范围T J-20~120℃储存温度T STG-65~+150℃功耗P D内部限制(注1)mw ESD能力(最小值)ESD2000V注1：最大允许功耗是最大工作结温TJ(max)，结对空热阻θJA和环境温度Tamb的函数。

最大允许功耗在给定的环境温度下，PD(max)=(TJ(max)-Tamb)/θJA，超过最大允许功耗会导致芯片温度过高，调整器因此会进入到过热切断状态。

不同封装类型的结对空热阻θJA是不同的，由封装技术决定。

推荐工作条件参数符号范围单位输入电压V IN3~9V 工作结温范围T J-20~+120℃电气特性(除非特别指定，否则黑色字体所示的参数，Tamb=25℃，正常工作结温范围-40℃~125℃。

)参数符号测试条件最小值典型值最大值单位基准电压VREFAMS1117-ADJ,IOUT=10mA,VIN-VOUT=2V,TJ=25℃,10mA≤IOUT≤800mA,1.4V≤VIN-VOUT≤10V1.2381.2251.2501.2501.2621.270V输出电压VOUT AMS1117-1.8,IOUT=10mA,VIN=3.8V,TJ=25℃,0≤IOUT≤800mA,3.2V≤VIN≤10V1.7821.7641.8001.8001.8181.836VAMS1117-3.3,IOUT=10mA,VIN=5V,TJ=25℃,0≤IOUT≤800mA,4.75V≤VIN≤10V3.2673.2353.3003.3003.3333.365VAMS1117-5.0,IOUT=10mA,VIN=7V,TJ=25℃,0≤IOUT≤800mA,6.5V≤VIN≤10V4.9504.9005.0005.0005.055.10V输出电压温度稳定性TSOUT0.3%线性调整Rline VINMIN≤VIN≤12V,VOUT=Fixed/Adj,IOUT=10mA37mV负载调整Rload 10mA≤IOUT≤1A,VOUT=Fixed/Adj612mV漏失电压Vdrop IOUT=100mA 1.00 1.20V管脚排列功能描述AMS1117是一个低漏失电压调整器，它的稳压调整管是由一个PNP驱动的NPN管组成的,漏失电压定义为：VDROP=VBE+VSAT。

1A Adjustable/Fixed Low Dropout Linear Regulator- Low dropout voltage- Load regulation: 0.2% typical - Optimized for Low V oltage - On-chip thermal limiting- Standard SOT-223 and TO-252 packages- Three-terminal adjustable or fixed low dropout 1.2V ,1.5V ,1.8V , 2.5V , 2.85V , 3.3V , 5V . Regulators- Active SCSI terminators- High efficiency linear regulators- Post regulators for switching supplies - Battery chargers- 12V to 5V linear regulators - M otherboard clock suppliesThe AMS 1117-ADJ and AMS 1117-1.2,-1.5,-1.8,-2.5,-2.85, -3.3 and-5 are low dropout three-terminal regulators with 1A output current capability. These devices have been optimized for low voltage where transient response and minimum input voltage are critical. The 2.85V version is designed specifically to be used in Active Terminators for SCSI bus.On-chip thermal limiting provides protection against any combination of overload and ambient temperatures that would create excessive junction temperatures.Unlike PNP type regulators where up to 10% of the output current is wasted as quiescent current, the quiescent cur-rent of the AMS 1117 flows into the load, increasing effi-ciency.The AMS 1117 series regulators are available in the indus-try-standard SOT-223 and TO-252 power packages.Key FeaturesApplicationsGeneral DescriptionTypical ApplicationNotice: The distance between V out pin and Capacitor should not exceed 4cm for excellent performanceFigure 1. Typical Applications of AMS 11171A Adjustable/Fixed Low Dropout Linear RegulatorPin Assignments*With package soldered to 0.5 square inch copper area over backside ground plane or internal power plane, ΘJA can vary from 30°C/W to more than 50°C/W. Other mounting techniques may provide better thermal resistance than 30°C/W.Absolute Maximum RatingsFigure 2. Pin Assignments of AMS 1117ParameterMin.Max.UnitV IN 18 V(V IN – V OUT ) * I OUTSee Figure 3Operating Junction Temperature Range -20 125°C Storage Temperature Range-65150°C Lead Temperature (Soldering, 10 sec.) 300°C1A Adjustable/Fixed Low Dropout Linear RegulatorTypicals and limits appearing in normal type apply for T J =25℃.Limits appearing in Boldface type apply over the entire junction temperature for operation, -20℃to 125℃.Electrical CharacteristicBlock DiagramThermal LimitCurrent LimitV OUTV INSubstrateGND (fixed output) ADJ. (adjustable output)Figure 3. Block Diagram of AMS 1117SymbolParameterConditionsMin (Note 2) Typ (Note 1) Max(Note 2)UnitsV REFReference VoltageAMS 11171.5V<=(V IN -V OUT )<=7V,10mA<=I OUT <=1A1.225 1.250 1.275 VV OUT OutputVoltage 10mA<=I OUT <=1AI OUT = 10mA, V IN = 3.2V AMS 1117-1.2 ,2.7V<= V IN <=8.2V 1.176 1.152 1.200 1.200 1.224 1.248 V AMS 1117-1.5 ,3.0V<= V IN <=8.5V1.4701.5001.530VAMS 1117-1.8 ,3.3V<= V IN <=8.8V 1.764 1.800 1.836 VAMS 1117-2.5 ,4V<= V IN <= 9.5V 2.450 2.500 2.550 V AMS 1117-2.85 , 4.35V <= V IN <= 9.85V 2.793 2.850 2.907 V AMS 1117-3.3 , 4.8V<= V IN <=10.3V 3.234 3.300 3.366 V AMS 1117-5.0,6.5V<=V IN <= 12V4.9005.0005.100V1A Adjustable/Fixed Low Dropout Linear RegulatorTypicals and limits appearing in normal type apply for T J =25℃.Limits appearing in Boldface type apply over the entire junction temperature for operation, -20℃ to 125℃.Electrical Characteristic(Continued)SymbolParameter ConditionsMin (Note 2)Typ (Note 1) Max (Note 2) Units △V OUTLine Regultion (Note 3)I OUT =10mA ,(V OUT +1.5V)<=V IN <=12V 0.035 0.2 % Load Regultion (Note 3) V IN -V OUT =2V,10mA<= I OUT <=1A,0.2 0.7 % AMS 1117-1.2V IN -V OUT =2V,10mA<= I OUT <=1A,0.2 1 % V IN -V OUTDropout Volage I OUT =1A,△V REF =1% 1.100 1.250 V I LimitCurrent Limit V IN -V OUT = 2V, T J =25℃1.1 1.5A Minimum Load Current (Note 4) AMS 1117-ADJ1.5V<=(V IN -V OUT )<=10V10mA Quiescent CurentV IN =V OUT +1.25V 5 13 mA Thermal Regulation T A = 25°C, 30ms pulse 0.01 0.1 %/W RippleRejection f=120Hz,V IN -V OUT =3V, V Ripple =1V PP60 72 dB Adjust Pin Current50120µAAdjust Pin CurrentChange 1.5V<=V IN -V OUT <=7V, 10mA<=I OUT <=1A0.2 5 µATemperature Stability0.5 % Long Term StabilityT A = 125°C, 1000hrs.0.3%1A Adjustable/Fixed Low Dropout Linear RegulatorNote 1: Typical Values represent the most likely parametric norm. Note 2: All limits are guaranteed by testing or statistical analysis.Note 3: Load and line regulation are measured at constant junction room temperature. Note 4: The minimum output current required to maintain regulation.Typical Performance CharacteristicsTypicals and limits appearing in normal type apply for T J =25℃.Limits appearing in Boldface type apply over the entire junction temperature for operation, -20℃to 125℃.Electrical Characteristic(Continued)Symbol ParameterConditionsMin (Note 2) Typ (Note 1) Max (Note 2)UnitsI LimitRMS Output Noise(% ofV OUT )T A = 25°C, 10Hz<= f <=10kHz0.003 % Thermal Resistance, Junctionto CaseSOT-223 15 ℃/W TO-252 3 ℃/W Thermal Shutdown Junction Temperature155 ℃ Thermal Shutdown Hysteresis25℃Output Current ( A )0 0.2 0.4 0.6 0.8 1.01.5 1.4 1.3 1.2 1.0 0.9 0.8 0.7 0.6 0.5 0D r o p o u t V o l t a g e ( V )Figure 4. Dropout Voltage VS. Output Current1A Adjustable/Fixed Low Dropout Linear RegulatorTypical Performance Characteristics(Continued)Figure 6. Output Voltage VS. TemperatureO u t p u t V o l t a g e ( V )3.70 3.65 3.603.553.50 3.45 3.40 3.35 3.30 3.253.20Junction Temperature ( ℃ )-75 –50 –25 0 25 50 75 100 125 150 175Figure 5. Reference Voltage VS. TemperatureR e f e r e n c e V o l t a g e ( V )0.260 1.255 1.250 1.245 1.240 1.235 1.225 1.220 1.215 1.210Junction Temperature ( ℃ )-75 –50 –25 0 25 50 75 100 125 150 175Figure 7. Minimum Load Current VS. TemperatureM i n i m u m L o a d C u r r e n t ( m A )5 4 3 2 1Junction Temperature ( ℃ ) -75 –50 –25 0 25 50 75 100 125 150 175Figure 8. ADJ Pin Current VS. TemperatureA D J P i n C u r r e n t ( µA ) 100 90 807060 50 40 30 20 10 0Junction Temperature ( ℃ ) -75 –50 –25 0 25 50 75 100 125 150 175Note:AMS 1117 OnlyAMS11171AAdjustable/Fixed Low Dropout Linear RegulatorMechanical Dimensions4-Lead SOT-223 PackageSymbolInches Millimeters NotesMin.Max.Min. Max.A Ñ .071 Ñ 1.80 A1 Ñ .181 Ñ 4.80B .025 .033 .064 .840 c Ñ 0.90 Ñ 2.29 D .248 .264 6.30 6.71 E .130 .148 3.30 3.71 e .115 .124 2.95 3.15 F .033 .041 .840 1.04 H .264 .287 6.71 7.29 I .0121 Ñ .310 Ñ J Ñ 10° Ñ 10° K 10° 16° 10° 16° L.0008 .0040 .0203 .1018 M 10° 16° 10° 16° N.010.014.250.360Figure 9. 4-Lead SOT-223 Package1A Adjustable/Fixed Low Dropout Linear RegulatorMechanical Dimensions(Continued)3-Lead TO-252 PackageNotes:1. Dimensions are exclusive of mold flash, metal burrsor interlead protrusion.2. Stand off-height is measured from lead tip with ref. toDatum –B-.3. Foot length is measured with ref. to Datum –A– withlead surface. 4. Thermal pad contour optional within dimension b3 and L3.5. Formed leads to be planar with respect to one anotherat seating place –C-.6. Dimensions and tolerances.SymbolInchesMillimetersNotesMin. Max.Min. Max.A .086 .094 2.19 2.39 b .025 .035 0.64 0.89 b2 .030 .045 0.76 1.14 b3 .205 .215 5.12 5.46 4 c .018 .024 0.46 0.61 c2 .018 .023 0.46 0.58 D .210 .245 5.33 6.22 1E .250 .265 6.35 6.73 1e .090 BSC 2.29 BSCH .370 .410 9.40 10.41 L .055 .070 1.40 1.78 3 L1 .108 REF 2.74 REFL3 .035 .080 0.89 2.03 4 L4.025.0400.641.02Figure 10. 3-Lead TO-252 Package1A Adjustable/Fixed Low Dropout Linear R egulatorAdvanced Monolithic Systems The " " logo is a registered trademark of Advanced Monolithic Systems.All other company and product names are trademarks of their respective ownersOrdering InformationPackage Temperature Range Part Number Output Voltage Packing Marking Transport MediaSOT －223－２０℃ - +125℃ AMS 1117-1.2 1.2V AMS 1117 1.2 2.5K Tape and Reel －２０℃ - +125℃ AMS 1117-1.5 1.5V AMS 1117 1.5 2.5K Tape and Reel -20℃ - +125℃ AMS 1117-1.8 1.8V AMS 1117 1.8 2.5K Tape and Reel-20℃ - +125℃ AMS 1117-2.5 2.5V AMS 1117 2.5 2.5K Tape and Reel -20℃ - +125℃ AMS 1117-2.85 2.85V AMS 1117 2.8 2.5K Tape and Reel -20℃ - +125℃ AMS 1117-3.3 3.3V AMS 1117 3.3 2.5K Tape and Reel -20℃ - +125℃ AMS 1117-5 5V AMS 1117 5 2.5K Tape and Reel -20℃ - +125℃ AMS 1117 Adjust AMS 1117 2.5K Tape and Reel TO －252-20℃ - +125℃ AMS 1117-1.2 1.2V AMS 1117 1.2 2.5K Tape and Reel -20℃ - +125℃ AMS 1117-1.5 1.5V AMS 1117 1.5 2.5K Tape and Reel -20℃ - +125℃ AMS 1117-1.8 1.8V AMS 1117 1.8 2.5K Tape and Reel-20℃ - +125℃ AMS 1117-2.5 2.5V AMS 1117 2.5 2.5K Tape and Reel -20℃ - +125℃ AMS 1117-2.85 2.85V AMS 1117 2.8 2.5K Tape and Reel -20℃ - +125℃ AMS 1117-3.3 3.3V AMS 1117 3.3 2.5K Tape and Reel -20℃ - +125℃ AMS 1117-5 5.0V AMS 1117 5 2.5K Tape and Reel -20℃ - +125℃ AMS 1117CD Adjust AMS 1117CD 2.5K Tape and ReelDisclaimer:• AMS reserves the right to make changes to the information herein for the improvement of the design and performancewithout further notice! Customers should obtain the latest relevant information before placing orders and should verify that such information is complete and current.• All semiconductor products malfunction or fail with some probability under special conditions. When using AMS productsin system design or complete machine manufacturing, it is the responsibility of the buyer to comply with the safety standards strictly and take essential measures to avoid situations in which a malfunction or failure of such AMS products could cause loss of body injury or damage to property.• AMS will supply the best possible product for customers!。

假冒器件警示：AMS1117-3.3型稳压器
一、被仿冒产品基本情况
样品名称：稳压器
生产厂家：AMS
规格型号：AMS1117-3.3
封装形式：SOT-223
批次号：H821MP
二、信息来源
使用方送检（融融元器件检测）
三、失效现象
在接近额定负载条件下长时间工作，存在较高失效率，失效率可达10%；在20%负载条件下，失效率为2%。

四、危害等级及辨别难度
1、危险等级：器件初始状态功能基本正常，使用中会出现短路、烧毁等严重影响功能和安全的失效，隐蔽性强，早期发现困难，具有非常高危险等级。

2、识别难度：主要假冒方式为仿制，外观基本正常，硅片面积、结构均与正常器件存在巨大差别，识别难度非常高。

五、辨别方法
1、表面标识基本正常
图1 外部照片
2、硅片与原装器件有明显差异，硅片面积小，无厂家标识，版图结构过于简单。

3、封装SiO2填料形状不规则，有大量尖角
图2 内部结构照片。