7805手册

©2006FairchildSemiconductorCorporation1■OutputCurrentupto1A■OutputVoltagesof5,6,8,9,10,12,15,18,24■ThermalOverloadProtection■ShortCircuitProtection■OutputTransistorSafeOperatingAreaProtectionGeneralDescriptionTheLM78XXseriesofthreeterminalpositiveregulatorsareavailableintheTO-220packageandwithseveralfixedoutputvoltages,makingthemusefulinawiderangeofapplications.Eachtypeemploysinternalcurrentlimiting,thermalshutdownandsafeoperatingareapro-tection,makingitessentiallyindestructible.Ifadequateheatsinkingisprovided,theycandeliverover1Aoutputcurrent.Althoughdesignedprimarilyasfixedvoltageregulators,thesedevicescanbeusedwithexternalcom-ponentstoobtainadjustablevoltagesandcurrents.OrderingInformationProductNumberOutputVoltageTolerancePackageOperatingTemperatureLM7805CT±4%TO-220-40°Cto+125°CLM7806CTLM7808CTLM7809CTLM7810CTLM7812CTLM7815CTLM7818CTLM7824CTLM7805ACT±2%0°Cto+125°CLM7806ACTLM7808ACTLM7809ACTLM7810ACTLM7812ACTLM7815ACTLM7818ACTLM7824ACT2ficationsshouldbemet,withoutexception,toensurethatthesystemdesignisreliableoveritspowersupply,temperature,andoutput/inputloadingvariables.Fairchilddoesnotrecommendoperationoutsidedatasheetspecifications.SymbolParameterValueUnitVIInputVoltageVO=5Vto18V35VVO=24V40VRθJCThermalResistanceJunction-Cases(TO-220)5°C/WRθJAThermalResistanceJunction-Air(TO-220)65°C/WTOPROperatingTemperatureRangeLM78xx-40to+125°CLM78xxA0to+125TSTGStorageTemperatureRange-65to+150°CStartingCircuitInput1ReferenceVoltageCurrentGeneratorSOAProtectionThermalProtectionSeriesPassElementErrorAmplifierOutput3GND211.Input2.GND3.OutputGNDTO-2203(LM7805)Refertothetestcircuits.-40°CTJ125°C,IO=500mA,VI=10V,CI=0.1µF,unlessotherwisespecified.Notes:1.Loadandlineregulationarespecifiedatconstantjunctiontemperature.ChangesinVOduetoheatingeffectsmustbetakenintoaccountseparately.Pulsetestingwithlowdutyisused.2.Theseparameters,althoughguaranteed,arenot100%testedinproduction.SymbolParameterConditionsMin.Typ.Max.UnitVOOutputVoltageTJ=+25°C4.85.05.2V5mA≤IO≤1A,PO≤15W,VI=7Vto20V4.755.05.25ReglineLineRegulation(1)TJ=+25°CVO=7Vto25V–4.0100mVVI=8Vto12V–1.650.0RegloadLoadRegulation(1)TJ=+25°CIO=5mAto1.5A–9.0100mVIO=250mAto750mA–4.050.0IQQuiescentCurrentTJ=+25°C–5.08.0mA∆IQQuiescentCurrentChangeIO=5mAto1A–0.030.5mAVI=7Vto25V–0.31.3∆VO/∆TOutputVoltageDrift(2)IO=5mA–-0.8–mV/°CVNOutputNoiseVoltagef=10Hzto100kHz,TA=+25°C–42.0–µV/VORRRippleRejection(2)f=120Hz,VO=8Vto18V62.073.0–dBVDROPDropoutVoltageIO=1A,TJ=+25°C–2.0–VrOOutputResistance(2)f=1kHz–15.0–mΩISCShortCircuitCurrentVI=35V,TA=+25°C–230–mAIPKPeakCurrent(2)TJ=+25°C–2.2–A4(LM7806)(Continued)Refertothetestcircuits.-40°CTJ125°C,IO=500mA,VI=11V,CI=0.33µF,CO=0.1µF,unlessotherwisespecified.Notes:3.Loadandlineregulationarespecifiedatconstantjunctiontemperature.ChangesinVOduetoheatingeffectsmustbetakenintoaccountseparately.Pulsetestingwithlowdutyisused.4.Theseparameters,althoughguaranteed,arenot100%testedinproduction.SymbolParameterConditionsMinTyp.Max.UnitVOOutputVoltageTJ=+25°C5.756.06.25V5mA≤IO≤1A,PO≤15W,VI=8.0Vto21V5.76.06.3ReglineLineRegulation(3)TJ=+25°CVI=8Vto25V–5.0120mVVI=9Vto13V–1.560.0RegloadLoadRegulation(3)TJ=+25°CIO=5mAto1.5A–9.0120mVIO=250mAto750mA–3.060.0IQQuiescentCurrentTJ=+25°C–5.08.0mA∆IQQuiescentCurrentChangeIO=5mAto1A––0.5mAVI=8Vto25V––1.3∆VO/∆TOutputVoltageDrift(4)IO=5mA–-0.8–mV/°CVNOutputNoiseVoltagef=10Hzto100kHz,TA=+25°C–45.0–µV/VORRRippleRejection(4)f=120Hz,VO=8Vto18V62.073.0–dBVDROPDropoutVoltageIO=1A,TJ=+25°C–2.0–VrOOutputResistance(4)f=1kHz–19.0–mΩISCShortCircuitCurrentVI=35V,TA=+25°C–250–mAIPKPeakCurrent(4)TJ=+25°C–2.2–A5(LM7808)(Continued)Refertothetestcircuits.-40°CTJ125°C,IO=500mA,VI=14V,CI=0.33µF,CO=0.1µF,unlessotherwisespecified.Notes:5.Loadandlineregulationarespecifiedatconstantjunctiontemperature.ChangesinVOduetoheatingeffectsmustbetakenintoaccountseparately.Pulsetestingwithlowdutyisused.6.Theseparameters,althoughguaranteed,arenot100%testedinproduction.SymbolParameterConditionsMin.Typ.Max.UnitVOOutputVoltageTJ=+25°C7.78.08.3V5mA≤IO≤1A,PO≤15W,VI=10.5Vto23V7.68.08.4ReglineLineRegulation(5)TJ=+25°CVI=10.5Vto25V–5.0160mVVI=11.5Vto17V–2.080.0RegloadLoadRegulation(5)TJ=+25°CIO=5mAto1.5A–10.0160mVIO=250mAto750mA–5.080.0IQQuiescentCurrentTJ=+25°C–5.08.0mA∆IQQuiescentCurrentChangeIO=5mAto1A–0.050.5mAVI=10.5Vto25V–0.51.