资料课件讲义芯片手册l7812

1、L7800 SERIESPOSITIVE VOLTAGE REGULATORS OUTPUT CURRENT UP TO 1.5 A OUTPUT VOLTAGES OF 5; 5.2; 6; 8; 8.5; 9;12; 15; 18; 24V THERMAL OVERLOAD PROTECTION SHORT CIRCUIT PROTECTION OUTPUT TRANSITION SOA PROTECTIONDESCRIPTIONThe L7800 series of three-terminal positive regulators is available in TO-220 ISO

2、WATT220 TO-3 and D2PAK packages and several fixed output voltages, making it useful in a wide range of applications.These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type employs internal current limiting, therm

3、al shut-down and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A1312TO-3D2PAKoutput current. Although designed primarily fixed voltage regulators, these devices can beas33221usedwithexternalcomponents adjustable voltages and

4、currents.toobtain1TO-220ISOWATT220BLOCK DIAGRAM1/25January 1997L7800ABSOLUTE MAXIMUM RATINGSSymbolParameterValue3540Internally limited Internally limited- 55 to 1250 to 150- 40 to 150UnitV VViDC Input Voltage (for VO = 5 to 18V)(for VO = 20, 24V)Output Current Power DissipationOperating Junction Tem

5、perature Range (for L7800)(for L7800C)Storage Temperature RangeIo PtotTopoCoCoCTstgTHERMAL DATASymbolD2PAK362. 5ParameterTO-220350ISOWATT220460TO-3435UnitoC/W oC/WRthj- caseRth j-a mbThermal Resistance Junction-case Thermal Resistance Junction-ambientMax MaxCONNECTION DIAGRAM AND ORDERING NUMBERS (t

6、op view)TO-220 & ISOWATT220D2PAKTO-3TypeL7805 L7805C L7852C L7806 L7806C L7808 L7808C L7885C L7809C L7812 L7812C L7815 L7815C L7818 L7818C L7820 L7820C L7824 L7824CTO-220D2PAK (*)ISOWATT 220TO-3L7805T L7805CT L7852CT L7806T L7806CT L7808T L7808CT L7885CT L7809CT L7812T L7812CT L7815T L7815CT L7818T

7、L7818CT L7820T L7820CT L7824T L7824CTOutput Voltage5V5V5.2V6V6V8V8V8.5V9V12V12V15V15V18V18V20V20V24V24VL7805CV L7852CVL7805CD2T L7852CD2TL7805CP L7852CPL7806CVL7806CD2TL7806CPL7808CV L7885CV L7809CVL7808CD2T L7885CD2T L7809CD2TL7808CP L7885CP L7809CPL7812CVL7812CD2TL7812CPL7815CVL7815CD2TL7815CPL781

8、8CVL7818CD2TL7818CPL7820CVL7820CD2TL7820CPL7824CVL7824CD2TL7824CP(*) AVAILABLE IN TAPE AND REEL WITH ”-TR” SUFFIX2/25L7800APPLICATION CIRCUITSCHEMATIC DIAGRAM3/25L7800TEST CIRCUITSFigure 1 : DC ParameterFigure 2 : Load Regulation.Figure 3 : Ripple Rejection.4/25L7800ELECTRICAL CHARACTERISTICS FOR L7

9、805 (refer to the test circuits, Tj = -55 to 150 oC, Vi = 10V, Io = 500 mA, Ci = 0.33 mF, Co = 0.1 mF unless otherwise specified)SymbolVo VoParameterOutput Voltage Output VoltageTest ConditionsMin.4.84.65Typ.55Max.5.25.35UnitV VTj = 25 oCIo = 5 mA to 1 A Po 15 W Vi = 8 to 20 VVi = 7 to 25 V Tj = 25

10、oC Vi =8 to 12 V Tj = 25 oCDVo*Line Regulation3150251002560.50.8mV mVmV mVm A m A m AmV/oCDVo*Load RegulationIo = 5 to 1500 mAIo = 250 to 750 mA Tj = 25 oCIo = 5 to 1000 mAVi =8 to 25 VIo =5 mATj = 25 oC Tj = 25 oCIdDIdDIdDVoDT eN SVRVd Ro IscIscpQuiescent Current Quiescent Current Change Quiescent

11、Current ChangeOutput Voltage Drift0. 6Tj = 25oCmV/VO dB VmWA AOutput Noise Voltage Supply Voltage Rejection Dropout VoltageOutput Resistance Short Circuit CurrentShort Circuit Peak CurrentB = 10Hz to 100KHz40Vi = 8 to 18 Vf = 120 Hz68Tj = 25 oCIo =1 Af = 1 KHzVi = 35 V Tj = 25 oC2170.752. 22.5Tj = 2

12、5 oC1.23.31.3ELECTRICAL CHARACTERISTICS FOR L7806 (refer to the test circuits, Tj = -55 to 150 oC, Vi = 15V, Io = 500 mA, Ci = 0.33 mF, Co = 0.1 mF unless otherwise specified)SymbolVo VoParameterOutput Voltage Output VoltageTest ConditionsMin.5.755.65Typ.66Max.6.256.35UnitV VTj = 25 oCIo = 5 mA to 1

13、 A Po 15 W Vi = 9 to 21 VVi =8 to 25 V Tj = 25 oC Vi = 9 to 13 V Tj = 25 oCDVo*Line Regulation60301003060.50.8mV mVmV mVm A m A m AmV/oCDVo*Tj = 25oC Tj = 25 oCLoad RegulationIo = 5 to 1500 mAIo = 250 to 750 mA Tj = 25 oCIo = 5 to 1000 mAVi =9 to 25 VIo =5 mAIdDIdDIdDVoDT eN SVRVd Ro IscIscpQuiescen

14、t Current Quiescent Current Change Quiescent Current ChangeOutput Voltage Drift0. 7Output Noise Voltage Supply Voltage Rejection Dropout VoltageOutput Resistance Short Circuit CurrentShort Circuit Peak CurrentB = 10Hz to 100KHzTj = 25 oC40mV/VO dB VmWA AVi = 9 to 19 Vf = 120 Hz65Io =1 Af = 1 KHzVi =

15、 35 V Tj = 25 oCTj = 25 oC2190.752. 22.5Tj = 25oC1.23.31.3* Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulce testing with low duty cycle is used.5/25L7800ELECTRICAL CHARACTERISTICS FOR L7808 (re

16、fer to the test circuits, Tj = -55 to 150 oC, Vi = 14V, Io = 500 mA, Ci = 0.33 mF, Co = 0.1 mF unless otherwise specified)SymbolVo VoParameterOutput Voltage Output VoltageTest ConditionsMin.7.77.6Typ.88Max.8.38.4UnitV VTj = 25 oCIo = 5 mA to 1 A Po 15 W Vi = 11.5 to 23 VVi = 10.5 to 25 V Tj = 25 oC

17、Vi = 11 to 17V Tj = 25 oCDVo*Line Regulation80401004060.50.8mV mVmV mVm A m A m AmV/oCDVo*Load RegulationIo = 5 to 1500 mAIo = 250 to 750 mA Tj = 25 oCIo = 5 to 1000 mAVi = 11.5 to 25 VIo =5 mATj = 25 oC Tj = 25 oCIdDIdDIdDVoDT eN SVRVd Ro IscIscpQuiescent Current Quiescent Current Change Quiescent

18、Current ChangeOutput Voltage Drift1Tj = 25oCf = 120 HzmV/VO dB VmWA AOutput Noise Voltage Supply Voltage Rejection Dropout VoltageOutput Resistance Short Circuit CurrentShort Circuit Peak CurrentB = 10Hz to 100KHzVi = 11.5 to 21.5 V4062Tj = 25 oCIo =1 Af = 1 KHzVi = 35 V Tj = 25 oC2160.752. 22.5Tj =

19、 25 oC1.23.31.3ELECTRICAL CHARACTERISTICS FOR L7812 (refer to the test circuits, Tj = -55 to 150 oC, Vi = 19V, Io = 500 mA, Ci = 0.33 mF, Co = 0.1 mF unless otherwise specified)SymbolVo VoParameterOutput Voltage Output VoltageTest ConditionsMin.11.511.4Typ.1212Max.12.512.6UnitV VTj = 25 oCIo = 5 mA

20、to 1 A Po 15 W Vi = 15.5 to 27 VVi = 14.5 to 30 V Tj = 25 oC Vi = 16 to 22V Tj = 25 oCDVo*Line Regulation120601006060.50.8mV mVmV mVm A m A m AmV/oCDVo*Tj = 25oC Tj = 25 oCLoad RegulationIo = 5 to 1500 mAIo = 250 to 750 mA Tj = 25 oCIo = 5 to 1000 mA Vi = 15 to 30VIo =5 mAIdDIdDIdDVoDT eN SVRVd Ro I

21、scIscpQuiescent Current Quiescent Current Change Quiescent Current ChangeOutput Voltage Drift1. 5Output Noise Voltage Supply Voltage Rejection Dropout VoltageOutput Resistance Short Circuit CurrentShort Circuit Peak CurrentB = 10Hz to 100KHzTj = 25 oC40mV/VO dB VmWA AVi = 15 to 25Vf= 120 Hz61Io =1 A

22、f = 1 KHzVi = 35 V Tj = 25 oCTj = 25 oC2180.752. 22.5Tj = 25oC1.23.31.3* Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulce testing with low duty cycle is used.6/25L7800ELECTRICAL CHARACTERISTICS

23、FOR L7815 (refer to the test circuits, Tj = -55 to 150 oC, Vi = 23V, Io = 500 mA, Ci = 0.33 mF, Co = 0.1 mF unless otherwise specified)SymbolVo VoParameterOutput Voltage Output VoltageTest ConditionsMin.14.414. 25Typ.1515Max.15.615. 75UnitV VTj = 25 oCIo = 5 mA to 1 A Po 15 W Vi = 18.5 to 30 VVi = 1

24、7.5 to 30 V Tj = 25 oC Vi = 20 to 26V Tj = 25 oCDVo*Line Regulation150751507560.50.8mV mVmV mVm A m A m AmV/oCDVo*Load RegulationIo = 5 to 1500 mAIo = 250 to 750 mA Tj = 25 oCIo = 5 to 1000 mAVi = 18.5 to 30 VIo =5 mATj = 25 oC Tj = 25 oCIdDIdDIdDVoDT eN SVRVd Ro IscIscpQuiescent Current Quiescent C

25、urrent Change Quiescent Current ChangeOutput Voltage Drift1. 8Tj = 25oCf = 120 HzmV/VO dB VmWA AOutput Noise Voltage Supply Voltage Rejection Dropout VoltageOutput Resistance Short Circuit CurrentShort Circuit Peak CurrentB = 10Hz to 100KHzVi = 18.5 to 28.5 V4060Tj = 25 oCIo =1 Af = 1 KHzVi = 35 V T

26、j = 25 oC2190.752. 22.5Tj = 25 oC1.23.31.3ELECTRICAL CHARACTERISTICS FOR L7818 (refer to the test circuits, Tj = -55 to 150 oC, Vi = 26V, Io = 500 mA, Ci = 0.33 mF, Co = 0.1 mF unless otherwise specified)SymbolVo VoParameterOutput Voltage Output VoltageTest ConditionsMin.17.317.1Typ.1818Max.18.718.9

27、UnitV VTj = 25 oCIo = 5 mA to 1 A Po 15 W Vi = 22 to33VVi = 21 to 33V Tj = 25 oC Vi = 24 to 30V Tj = 25 oCDVo*Line Regulation180901809060.50.8mV mVmV mVm A m A m AmV/oCDVo*Tj = 25oC Tj = 25 oCLoad RegulationIo = 5 to 1500 mAIo = 250 to 750 mA Tj = 25 oCIo = 5 to 1000 mA Vi = 22 to 33VIo =5 mAIdDIdDI

28、dDVoDT eN SVRVd Ro IscIscpQuiescent Current Quiescent Current Change Quiescent Current ChangeOutput Voltage Drift2. 3Output Noise Voltage Supply Voltage Rejection Dropout VoltageOutput Resistance Short Circuit CurrentShort Circuit Peak CurrentB = 10Hz to 100KHzTj = 25 oC40mV/VO dB VmWA AVi = 22 to 3

29、2Vf= 120 Hz59Io =1 Af = 1 KHzVi = 35 V Tj = 25 oCTj = 25 oC2220.752. 22.5Tj = 25oC1.23.31.3* Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulce testing with low duty cycle is used.7/25L7800ELECTRI

30、CAL CHARACTERISTICS FOR L7820 (refer to the test circuits, Tj = -55 to 150 oC, Vi = 28V, Io = 500 mA, Ci = 0.33 mF, Co = 0.1 mF unless otherwise specified)SymbolVo VoParameterOutput Voltage Output VoltageTest ConditionsMin.19.219Typ.2020Max.20.821UnitV VTj = 25 oCIo = 5 mA to 1 A Po 15 W Vi = 24 to3

31、5VVi = 22.5 to 35 V Tj = 25 oC Vi = 26 to 32V Tj = 25 oCDVo*Line Regulation20010020010060.50.8mV mVmV mVm A m A m AmV/oCDVo*Load RegulationIo = 5 to 1500 mAIo = 250 to 750 mA Tj = 25 oCIo = 5 to 1000 mA Vi = 24 to 35VIo =5 mATj = 25 oC Tj = 25 oCIdDIdDIdDVoDT eN SVRVd Ro IscIscpQuiescent Current Qui

32、escent Current Change Quiescent Current ChangeOutput Voltage Drift2. 5Tj = 25oCmV/VO dB VmWA AOutput Noise Voltage Supply Voltage Rejection Dropout VoltageOutput Resistance Short Circuit CurrentShort Circuit Peak CurrentB = 10Hz to 100KHz40Vi = 24 to 35Vf= 120 Hz58Tj = 25 oCIo =1 Af = 1 KHzVi = 35 V

33、 Tj = 25 oC2240.752. 22.5Tj = 25 oC1.23.31.3ELECTRICAL CHARACTERISTICS FOR L7824 (refer to the test circuits, Tj = -55 to 150 oC, Vi = 33V, Io = 500 mA, Ci = 0.33 mF, Co = 0.1 mF unless otherwise specified)SymbolVo VoParameterOutput Voltage Output VoltageTest ConditionsMin.2322.8Typ.2424Max.2525.2Un

34、itV VTj = 25 oCIo = 5 mA to 1 A Po 15 W Vi = 28 to38VVi = 27 to 38V Tj = 25 oC Vi = 30 to 36V Tj = 25 oCDVo*Line Regulation24012024012060.50.8mV mVmV mVm A m A m AmV/oCDVo*Tj = 25oC Tj = 25 oCLoad RegulationIo = 5 to 1500 mAIo = 250 to 750 mA Tj = 25 oCIo = 5 to 1000 mA Vi = 28 to 38VIo =5 mAIdDIdDI

35、dDVoDT eN SVRVd Ro IscIscpQuiescent Current Quiescent Current Change Quiescent Current ChangeOutput Voltage Drift3Output Noise Voltage Supply Voltage Rejection Dropout VoltageOutput Resistance Short Circuit CurrentShort Circuit Peak CurrentB = 10Hz to 100KHzTj = 25 oC40mV/VO dB VmWA AVi = 28 to 38Vf

36、= 120 Hz56Io =1 Af = 1 KHzVi = 35 V Tj = 25 oCTj = 25 oC2280.752. 22.5Tj = 25oC1.23.31.3* Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulce testing with low duty cycle is used.8/25L7800ELECTRICAL

37、 CHARACTERISTICS FOR L7805C (refer to the test circuits, Tj = 0 to 125 oC, Vi = 10V, Io = 500 mA, Ci = 0.33 mF, Co = 0.1 mF unless otherwise specified)SymbolVo VoParameterOutput Voltage Output VoltageTest ConditionsMin.4.84.75Typ.55Max.5.25.25UnitV VTj = 25 oCIo = 5 mA to 1 A Po 15 W Vi = 7 to 20 VV

38、i = 7 to 25 V Tj = 25 oC Vi =8 to 12 V Tj = 25 oCDVo*Line Regulation31100501005080.50.8mV mVmV mVm A m A m AmV/oCDVo*Load RegulationIo = 5 to 1500 mAIo = 250 to 750 mA Tj = 25 oCIo = 5 to 1000 mAVi =7 to 25 V Io = 5 mATj = 25 oC Tj = 25 oCIdDIdDIdDVoDT eN SVRVd Ro IscIscpQuiescent Current Quiescent

39、Current Change Quiescent Current ChangeOutput Voltage Drift- 1.1Tj = 25oCmV dB VmWm A AOutput Noise Voltage Supply Voltage Rejection Dropout VoltageOutput Resistance Short Circuit CurrentShort Circuit Peak CurrentB = 10Hz to 100KHz40Vi = 8 to 18 Vf = 120 Hz62Tj = 25 oCIo =1 Af = 1 KHzVi = 35 V Tj =

40、25 oC2177502. 2Tj = 25 oCELECTRICAL CHARACTERISTICS FOR L7852C (refer to the test circuits, Tj = 0 to 125 oC, Vi = 10V, Io = 500 mA, Ci = 0.33 mF, Co = 0.1 mF unless otherwise specified)SymbolVo VoParameterOutput Voltage Output VoltageTest ConditionsMin.5.04.95Typ.5. 25. 2Max.5.45.45UnitV VTj = 25 o

41、CIo = 5 mA to 1 A Po 15 W Vi = 8 to 20 VVi =7 to 25 V Tj = 25 oC Vi = 8 to 12 V Tj = 25 oCDVo*Line Regulation31105521055280.51.3mV mVmV mVm A m A m AmV/oCDVo*Tj = 25oC Tj = 25 oCLoad RegulationIo = 5 to 1500 mAIo = 250 to 750 mA Tj = 25 oCIo = 5 to 1000 mAVi =7 to 25 V Io = 5 mAIdDIdDIdDVoDT eN SVRV

42、d Ro IscIscpQuiescent Current Quiescent Current Change Quiescent Current ChangeOutput Voltage Drift- 1.0Output Noise Voltage Supply Voltage Rejection Dropout VoltageOutput Resistance Short Circuit CurrentShort Circuit Peak CurrentB = 10Hz to 100KHzTj = 25 oC42mV dB VmWm A AVi = 8 to 18 Vf = 120 Hz61

43、Io =1 Af = 1 KHzVi = 35 V Tj = 25 oCTj = 25 oC2177502. 2Tj = 25oC* Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulce testing with low duty cycle is used.9/25L7800ELECTRICAL CHARACTERISTICS FOR L7

44、806C (refer to the test circuits, Tj = 0 to 125 oC, Vi = 11V, Io = 500 mA, Ci = 0.33 mF, Co = 0.1 mF unless otherwise specified)SymbolVo VoParameterOutput Voltage Output VoltageTest ConditionsMin.5.755.7Typ.66Max.6.256.3UnitV VTj = 25 oCIo = 5 mA to 1 A Po 15 W Vi = 8 to 21 VVi = 8 to 25 V Tj = 25 o

45、C Vi =9 to 13 V Tj = 25 oCDVo*Line Regulation120601206080.51.3mV mVmV mVm A m A m AmV/oCDVo*Load RegulationIo = 5 to 1500 mAIo = 250 to 750 mA Tj = 25 oCIo = 5 to 1000 mAVi =8 to 25 V Io = 5 mATj = 25 oC Tj = 25 oCIdDIdDIdDVoDT eN SVRVd Ro IscIscpQuiescent Current Quiescent Current Change Quiescent

46、Current ChangeOutput Voltage Drift- 0.8Tj = 25oCmV dB VmWm A AOutput Noise Voltage Supply Voltage Rejection Dropout VoltageOutput Resistance Short Circuit CurrentShort Circuit Peak CurrentB = 10Hz to 100KHz45Vi = 9 to 19 Vf = 120 Hz59Tj = 25 oCIo =1 Af = 1 KHzVi = 35 V Tj = 25 oC2195502. 2Tj = 25 oC

47、ELECTRICAL CHARACTERISTICS FOR L7808C (refer to the test circuits, Tj = 0 to 125 oC, Vi = 14V, Io = 500 mA, Ci = 0.33 mF, Co = 0.1 mF unless otherwise specified)SymbolVo VoParameterOutput Voltage Output VoltageTest ConditionsMin.7.77.6Typ.88Max.8.38.4UnitV VTj = 25 oCIo = 5 mA to 1 A Po 15 W Vi = 10

48、.5 to 25 VVi = 10.5 to 25 V Tj = 25 oC Vi = 11 to 17V Tj = 25 oCDVo*Line Regulation160801608080.51mV mVmV mVm A m A m AmV/oCDVo*Tj = 25oC Tj = 25 oCLoad RegulationIo = 5 to 1500 mAIo = 250 to 750 mA Tj = 25 oCIo = 5 to 1000 mAVi = 10.5 to 25 VIo = 5 mAIdDIdDIdDVoDT eN SVRVd Ro IscIscpQuiescent Curre

49、nt Quiescent Current Change Quiescent Current ChangeOutput Voltage Drift- 0.8Output Noise Voltage Supply Voltage Rejection Dropout VoltageOutput Resistance Short Circuit CurrentShort Circuit Peak CurrentB = 10Hz to 100KHzVi = 11.5 to 21.5 VTj = 25 oCf = 120 Hz52mV dB VmWm A A56Io =1 Af = 1 KHzVi = 3

50、5 V Tj = 25 oCTj = 25 oC2164502. 2Tj = 25oC* Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulce testing with low duty cycle is used.10/25L7800ELECTRICAL CHARACTERISTICS FOR L7885C (refer to the te

51、st circuits, Tj = 0 to 125 oC, Vi = 14.5V, Io = 500 mA, Ci = 0.33 mF, Co = 0.1 mF unless otherwise specified)SymbolVo VoParameterOutput Voltage Output VoltageTest ConditionsMin.8.28.1Typ.8. 58. 5Max.8.88.9UnitV VTj = 25 oCIo = 5 mA to 1 A Po 15 W Vi = 11 to26VVi = 11 to 27V Tj = 25 oCDVo*Line Regula

52、tion160801608080.51mV mVmV mVm A m A m AmV/oCVi = 11.5 to 17.5 VIo = 5 to 1500 mAIo = 250 to 750 mA Tj = 25 oCIo = 5 to 1000 mA Vi = 11 to 27VIo = 5 mATj = 25 oCTj = 25 oC Tj = 25 oCDVo*Load RegulationIdDIdDIdDVoDT eN SVRVd Ro IscIscpQuiescent Current Quiescent Current Change Quiescent Current ChangeOutput Voltage Drift- 0.8Tj = 25oCmV dB VmWm A AOutput Noise Voltage Supply Voltage Rejection Dro