IL1084-ADJ中文资料

TECHNICALDATARev.04TA=-10to125°CAbsoluteMaximumRatingsSymbolParameterValueUnitVIDCInputVoltage12VTstgStorageTemperatureRange-65to+150°CTopOperatingJunctionTemperatureRange(Note3)-10to+125°CAbsoluteMaximumRatingsarethosevaluesbeyondwhichdamagetothedevicemayoccur.Functionaloperationundertheseconditionisnotimplied.5ALOWDROPOUTPOSITIVEREGULATORIL1084-XXFeatures•OutputCurrent:5A•MaximumInputVoltage:12V•AdjustableOutputVoltageorFixed•1.8V,3.3V,5.0V•CurrentLimitingandThermalProtection•Standard3-PinPowerPackagesApplications•PostRegulatorforSwitchingDC/DCConverter•HighEfficiencyLinerRegulators•BatteryChargerIL1084-xxRev.04ThermalDataSymbolParameterTO-220TO-263TO-252UnitθjcThermalResistanceJunction-case333°C/WθjaThermalResistanceJunction-ambient5062.550°C/WApllicationCircuitIL1084-xxRev.04ELECTRICALCHARACTERISTICSTypicalsandlimitsappearinginnormaltypeapplyforTj=+25°C.LimitsappearinginBoldfacetypeapplyovertheentirejunctiontemperaturerangeforoperation.SymbolParameterConditionsMin(Note5)Typ(Note4)Max(Note5)UnitsOutputVoltage(Note6)(Note6)(Note6)(Note6)IL1084-AdjBT2IOUT=10mA,VIN=4.25V0≤IOUT≤IFULLLOAD,2.75V≤VIN≤10V1.2371.2321.2251.2251.2251.2251.2501.2501.2501.2501.2501.2501.2631.2681.2751.2751.2751.275VOUTIL1084-1.8BT2IOUT=10mA,VIN=4.8V0≤IOUT≤IFULLLOAD,3.3V≤VIN≤10V1.7821.7731.7641.7641.7641.7641.8001.8001.8001.8001.8001.8001.8181.8271.8361.8361.8361.836IL1084-3.3BT2IOUT=10mA,VIN=6.3V0≤IOUT≤IFULLLOAD,4.8V≤VIN≤10V3.2703.2503.2353.2353.2353.2353.3003.3003.3003.3003.3003.3003.3303.3503.3653.3653.3653.365IL1084-5.0BT2IOUT=10mA,VIN=8.0V0≤IOUT≤IFULLLOAD,6.5V≤VIN≤10V4.9504.9254.9004.9004.9004.9005.0005.0005.0005.0005.0005.0005.0505.0755.1005.1005.1005.100IL1084-xxRev.04ELECTRICALCHARACTERISTICSTypicalsandlimitsappearinginnormaltypeapplyforTj=+25°C.LimitsappearinginBoldfacetypeapplyovertheentirejunctiontemperaturerangeforoperation.SymbolParameterConditionsMin(Note5)Typ(Note4)Max(Note5)UnitsLineRegulation(Note7)IL1084-AdjBT2IOUT=10mA,2.75V≤VIN≤10V----0.30.4%ΔVOUTIL1084-1.8BT2IOUT=10mA,3.3V≤VIN≤10V----610IL1084-3.3BT2IOUT=10mA,4.8V≤VIN≤10V----610IL1084-5.0BT2IOUT=10mA,6.5V≤VIN≤10V----610LoadRegulation(Note7)IL1084-AdjBT2VIN=4.25V,0≤IOUT≤IFULLLOAD----0.30.4%IL1084-1.8BT2VIN=5.0V,0≤IOUT≤IFULLLOAD----1220ΔVOUTIL1084-3.3BT2VIN=5.0V,0≤IOUT≤IFULLLOAD----1520mVIL1084-5.0BT2VIN=8.0V,0≤IOUT≤IFULLLOAD--2035ΔVDropoutVoltage(Note8)ΔVREF=1%,IOUT=5A--1.5VIO(MIN)MinimumLoadCurrentVIN=10V--10mAILIMITCurrentLimitVIN=6.25V5.5--AIADJAdjustPinCurrentVIN=2.75÷10V,IOUT=10mA--120μAΔIADJAdjustPinCurrentChangeIOUT=10mA÷5A,VIN=2.75÷10V--5μARRRippleRejectionfRIPPLE=120Hz,COUT=25μFTantalum,Iout=5A;VIN=4.25V60--dBSTemperatureStability-0.5-%NOTES1:Ratingindicateconditionsforwhichthedeviceisintendedtobefunctional,butspecificperformanceisnotGuaranteeed.Forguaranteedspecificationsandthetestconditions,seetheElectricalCharacteristics.NOTES2:PowerDissipationiskeptinasaferangebycurrentlimitingcircuitry.RefertoOverloadRecoveryinApplicationNotes.NOTES3:ThemaximumpowerdissipationisafunctionofTj(MAX),ΘjAandTA.ThemaximuallowablepowerdissipationatanyambienttemperatureisPD=(Tj(MAX)–TA)ΘjA.NOTES4:TypicalValuesrepresentthemostlikelyparametricnormNOTES5:AlllimitsareguaranteedbytestingorstatisticalanalysisNOTES6:IFULLLOADisdefindinthecurrentlimitcurves.TheIFULLLOADcurvedefinesthecurrentlimitasfunctionNOTES7:LoadandLineregulationaremeasuredatconstantjunctiontemperature,andareguaranteeduptothemaximumpowerdissipationof30W.Powerdissipationisdeterminedbytheinput/outputdifferentialandtheoutputcurrent.Guaranteedmaximumpowerdissipationwillnotbeavailableoverthefullinput/outputrange.NOTES8:DropoutvoltageisspecifiedoverthefulloutputcurrentrangeofthedeviceIL1084-xxRev.04TYPICALCHARACTERISTICS(unlessotherwisespecifiedTj=25°C,CI=10μF(tant.),CO=10μF(tant.)DropoutVoltagevsOutputCurrentLineRegulationvsTemperatureDropoutVoltagevsTemperatureOutputVoltagevsTemperatureShortCircuitCurrentvsDropoutVoltageLoadRegulationvsTemperatureIL1084-xxRev.04TYPICALCHARACTERISTICSSupplyVoltageRejectionvsFrequencyAdjustPinCurrentvsOutputCurrentIL1084-xxRev.04ApplicationNoteGENERALFigure1showsabasicfunctionaldiagramfortheIL1084-Adj(excludingprotectioncircuitry).ThetopologyisbasicallythatoftheLM317exceptforthepasstransistor.InsteadofaDarlingtionNPNwithitstwodiodevoltagedrop,theIL1084usesasingleNPN.Thisresultsinalowerdropoutvoltage.ThestructureofthepasstransistorisalsoknownasaquasiLDO.TheadvantageaquasiLDOoveraPNPLDOisitsinherentlylowerquiescentcurrent.TheIL1084isguaranteedtoprovideaminimumdropoutvoltage1.5Vovertemperature,atfullload.FIGURE1.BasicFunctionalDiagramfortheIL1084,excludingProtectioncircuitryOUTPUTVOLTAGETheIL1084adjustableversiondevelopsat1.25Vreferencevoltage,(VREF),betweentheoutputandtheadjustterminal.Asshowninfigure2,thisvoltageisappliedacrossresistorR1togenerateaconstantcurrentI1.ThisconstantcurrentthenflowsthroughR2.TheresultingvoltagedropacrossR2addstothereferencevoltagetosetsthedesiredoutputvoltage.ThecurrentIADJfromtheadjustmentterminalintroducesanoutputerror.Butsinceitissmall(120uAmax),itbecomesn