ASEMI电源芯片AMS1117-3.3AMS1117-5.0使用手册.docx

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1、AdvancedAMS1117MonolithicSystems1A LOW DROPOUT VOLTAGE REGULATORRoHs CompliantAPPLICATIONS High Efficiency Linear Regulators Post Regulators for Switching Supplies 5V to 3.3V Linear Regulator Battery Chargers Active SCSI Terminators Power Management for Notebook Battery Powered InstrumentationFEATUR

2、ES Three Terminal Adjustable or Fixed Voltages*L5V, L8V, 25V, 285V, 33V and 5.0V Output Current of 1A Operates Down to IV Dropout Line Regulation: 0.2% Max. Load Regulation: 0.4% Max. SOT-223, TO-252 and SO-8 package availableGENERAL DESCRIPTIONThe AMS1 1 1 7 series of adjustable and fixed voltage r

3、egulators are designed to provide up tol A output current and to operatedown to 1 V input-to-output differential. The dropout voltage of the device is guaranteed maximum 1.3 V, decreasing at lowerload currents.On-chip trimming adjusts the reference voltage to 1.5%. Current limit is set to minimize t

4、he stress under overload conditionson both the regulator and power source circuitry.The AMS1 1 I 7 devices are pin compatible with other three- terminal SCSI regulators and are offered in the low profile surfacemount SOT-223 package, in the 8L SOIC package and in the TO-252 (DPAK) plastic package.OR

5、DERING INFORMATION:PACKAGE TYPEOPERATING JUNCTIONTEMPERATURE RANGETO-252SOT-2238L SOICAMS1 1 17CDAMS1 117AMS1 1 17CS-40 to 125o CAMS1I17CD- 1.5AMS1117- 1.5AMS1117CS- 1.5-40 to 125o CAMS1 1 17CD- 1.8AMS1H7- 1.8AMS1117CS- 1.8-40 to 125o CAMS1117CD-2.5AMS1117-2.5AMS1117CS-2.5-40 to 125o CAMS1117CD-2.85

6、AMS1117-2.85AMS1117CS-2.85-40 to 125o CAMS1117CD-3.3AMS1117-3.3AMS1117CS-3.3-40 to 125o CAMSI 1 17CD-5.0AMS1 1 17-5.0AMS1 1 17CS-5.0-40 to I25o C* For additional available fixed voltages contact factory.8L SOIC Top ViewPIN CONNECTIONS3 PIN FIXED/ADJUSTABLEVERSIONSOT-223 Top ViewTO-252 FRONT VIEW1 -

7、Ground/Adj ust2- Vou3- Vin,l 2l 3lTAB ISOUTPUT3=,2=AMS1117ABSOLUTE MAXIMUM RATINGS (Note 1)Power DissipationInternally limitedInput Voltage15VOperating Junction TemperatureControl Section-40 to 125 Power Transistor-40 to 125oCStorage temperature- 65 to +150oCSoldering informationLead Temperature (25

8、 sec)Thermal Resistance265oCSO-8 packageTO-252 packageSOT-223 package* With package soldering to copperground plane or internal power plane ja= 160oCW ja= 80oCW ja= 90oCW*area over backside ja can vary from46oCW to 90oCW depending on mounting technique andthe size of the copper area.ELECTRICAL CHARA

9、CTERISTICSElectrical Characteristics at Iu = mA, and Tj = +250C unless otherwise specified.ParameterDeviceConditionsMinTypMaxUnitsReference Voltage(Note 2)AMS1117Iou= 10 mA1.5V (Vin - Vor) 12V1.2321.21251.250L2501.2681.2875VVOutput Voltage(Note 2)AMS1117- 1.5Vin =3V1.4781.4551.5001.5001.5221.545VVAM

10、S1117- 1.8Vin =33V1.7731.7461.8001.8001.8271.854VVAMS1117-2.5Vin =4V2.46324252.5002.5002.5372.575VVAMS1117-2.85Vin = 4.35V2.8082.76452.8502.8502.8922.9355VVAMS1117-3.3Vin =4.8V3.25132013.3003.30033493.399VVAMS1117-5.0Vin =6.5V4.9254.8505.0005.0005.0755.150VVLine RegulationAMS1117l.5V (Vin- Vr) 12V0.

11、0150.0350.20.2%AMS1117- 1.5L5V (Vin - Vor) 12V0.30.656mVmVAMS1117- 1.81.5V (Vin - Vor) I2V0.30.656mVmVAMS1117-2.5L5V (Vin- Vr) 12V030.666mVmVAMS1117-2.851.5V (Vin - Vor) 12V0.30.666mVmVAMS1117-3.31.5V (Vin - Vr) 12V0.51.01010mVmVAMS1117-5.01.5V (Vin - Vor) I2V0.51.01010mVmVLoad Regulation(Notes 2,3)

12、AMS1117(Vin - Vou) = 1.5V, 10mA Iou 0.8A0.10.20.30.4%AMS1117- 1.5Vjn= 3V, 0 lour 0.8A361020mVmVAMS11I7- 1.8Vn=33V,0 Iou0.8A361020mVmVAMS1117-2.5Vjn = 5V, 0 Iou 0.8A361220mVmVELECTRICAL CHARACTERISTICSElectrical Characteristics at Iu = 0 mA, and Tj = +250C unless otherwise specified.ParameterDeviceCo

13、nditionsMinTypMaxUnitsLoad Regulation(Notes 2, 3)AMSI 117-2.85Vin = 435V,0 Iout 0.8A361220mVmVAMS1II7-33Vin = 4.75V,0 Iou 0.8A371525mVmVAMS1117-5.0Vin = 6.5V, 0 Iou 0.8A5102035mVmVDropout Voltage(Vin - Vou)AMS1117- 1.5/- 1.8/-2.5/-2.85/-3.3/-5.0Vou,Vref= 1%, Iou=0.8A(Note4)1.11.3VCurrent LimitN4S1117-1.5/- 1.8/-2.5/-2.85/-3.3/-5.0(Vin - Vou) = 1.5V9001,1001,500mAN4inimum LoadCurrentAMS1117(Vn-Vorr)= 1.5V (Note 5)510mAQuiescent CurrentMS1117-1.5/-1.8/-2.5/-2.85/-3.3/-5.0(Vin - Vo) = 1.5V511mARipple Rejec