AP3031中文资料

DataSheet1Apr.2009Rev.1.3BCDSemiconductorManufacturingLimitedWHITELEDSTEP-UPCONVERTERAP3031GeneralDescriptionTheAP3031isaninductor-basedDC/DCboostcon-verterdesignedtodriveLEDarrays.1.4AswitchingcurrentallowsAP3031tobeusedindifferent7'to10'LCDpanelbacklights(3*13LEDarraystypically).Aconstantfrequency1MHzPWMcontrolschemeisemployedinthisIC,whichmeanstinyexternalcom-ponentscanbeused.Specifically,1mmtall4.7µHinductorand0.47µFoutputcapacitorforthetypicalapplicationissufficient.TheoveroutputvoltageprotectionisequippedinAP3031,whichprotectstheICunderopenloadcondi-tion.TheAP3031includesUVLO,soft-start,currentlimitandOTSDtoprotectthecircuit.TheAP3031isavailableinstandardSOT-23-6,TSOT-23-6andSOIC-8packages.Features·Upto92%Efficiency(VIN=9V,IOUT=260mA)·Upto84%Efficiency(VIN=5V,IOUT=260mA)·Fast1MHzSwitchingFrequency·WideInputVoltageRange:2.7Vto16V·Low200mVFeedbackVoltage·OutputOverVoltageProtection·CyclebyCycleCurrentLimit:1.4A·Built-inSoft-start·Built-inStandbyModetoAchieveHighFre-quencyPWMDimming·Built-inThermalShutdownFunction·UnderVoltageLockoutApplications·7'to10'LCDPanels·DigitalPhotoFrame·GPSReceiver·EPC·PDVDFigure1.PackageTypesofAP3031SOT-23-6TSOT-23-6SOIC-8DataSheet2Apr.2009Rev.1.3BCDSemiconductorManufacturingLimitedWHITELEDSTEP-UPCONVERTERAP3031Figure2.PinConfigurationofAP3031(TopView)PinConfigurationPinDescriptionPinNumberPinNameFunction6-Pin8-Pin14SWSwitchPin.ConnectexternalinductorandSchottky22,3,6GNDGroundPin31FBVoltageFeedbackPin.Referencevoltageis200mV48CTRLEnableandDimmingControlPin.ConnecttoahighinputtoenabletheICoralowinputtodisabletheIC.Iflogiclowtimeismorethanabout0.7msandthenenabletheIC,theAP3031willsoftstarttoprotectsystemdepartments.Iflogiclowtimeislessthanabout0.7msandthenenabletheIC,theAP3031willholdonstandbymodeandstartdirectlytoachievehighfrequencydimming57OVOver-voltageProtectionInputPin.Connecttotheoutputdirectly.OnOVPcondition,theout-putvoltagewillbeclamped65VINInputSupplyPin.Mustbelocallybypassed(SOT-23-6/TSOT-23-6)SWGNDFBVINOVCTRLK/KTPackage12345Pin1DotbyMarking6(SOIC-8)MPackage12348765SWGNDFBGNDVINOVCTRLGNDDataSheet3Apr.2009Rev.1.3BCDSemiconductorManufacturingLimitedWHITELEDSTEP-UPCONVERTERAP3031Q1ΣA2A11MHzOSCILLATORRAMPGENERATORVREFDRIVER1.25VCOMPARATOR200mVSOFTSTARTVINCTRLFBGNDSWSTANDBYOVToControlLogicCONTROLLOGICOVERTEMPERATUREDETECTOROVFunctionalBlockDiagramFigure3.FunctionalBlockDiagramofAP3031CircuitTypePackageK:SOT-23-6AP3031-Blank:TubeOrderingInformationPackageTemperatureRangePartNumberMarkingIDPackingTypeSOT-23-6-40to85oCAP3031KTR-G1GECTape&ReelTSOT-23-6AP3031KTTR-G1L1ETape&ReelSOIC-8AP3031M-G13031M-G1TubeAP3031MTR-G13031M-G1Tape&ReelBCDSemiconductor'sPb-freeproducts,asdesignatedwithG1suffixinthepartnumber,areRoHScompliantandgreen.G1:Green1(4)23(1)4(8)5(7)6(5)A(B)ASOT-23-6/TSOT-23-6BSOIC-8(2,3,6)KT:TSOT-23-6M:SOIC-8TR:TapeandReelDataSheet4Apr.2009Rev.1.3BCDSemiconductorManufacturingLimitedWHITELEDSTEP-UPCONVERTERAP3031ParameterSymbolValueUnitInputVoltageVIN20VSWVoltageVSW38VFBVoltageVFB20VCTRLVoltageVCTRL20VThermalResistance(JunctiontoAmbient,NoHeatSink)θJASOT-23-6/TSOT-23-6265oC/WSOIC-8120OperatingJunctionTemperatureTJ150oCStorageTemperatureRangeTSTG-65to150oCLeadTemperature(Soldering,10sec)TLEAD260oCESD(MachineModel)600VESD(HumanBodyModel)4000VNote1:StressesgreaterthanthoselistedunderAbsoluteMaximumRatingsmaycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderRecommendedOperatingConditionsisnotimplied.ExposuretoAbsoluteMaximumRatingsforextendedperiodsmayaffectdevicereliability.ParameterSymbolMinMaxUnitOperatingTemperatureRangeTOP-4085oCInputVoltageVIN2.716VCTRLVoltageVCTRL16VRecommendedOperatingConditionsAbsoluteMaximumRatings(Note1)DataSheet5Apr.2009Rev.1.3BCDSemiconductorManufacturingLimitedWHITELEDSTEP-UPCONVERTERAP3031ParameterSymbolConditionsMinTypMaxUnitOperatingVoltageVIN2.716VFeedbackVoltage(Note2)VFBIOUT=20mA,3LEDs,TA=-40oCto85oC188200212mVFBPinBiasCurrentIFB35100nAQuiescentCurrentIQVFB=VIN,noswitching3.04.05.0mAShutdownQuiescentCurrentISHDNVCTRL=0V205080µASwitchingFrequencyf0.7511.3MHzMaximumDutyCycleDMAX9093%SwitchCurrentLimit(Note3)ILIMITD=60%1.21.4ASwitchVCESaturationVoltageVCESATISW=0.6A300mVSwitchLeakageCurrentVSW=16V0.015µACTRLPinVoltageVCTRLActivehigh1.8VActivelow0.5CTRLPinBiasCurrentICTRL356085µAOVPVoltageVOVP17VSoft-startTimetSS250µsStandbyTimetSTB0.7msThermalShutdownTOTSD155oCThermalResistance(JunctiontoCase)θJC60oC/W(VIN=5.0V,VCTRL=5.0V,TA=25oC,unlessotherwisespecified.)ElectricalCharacteristicsNote2:Theboldtypespecificationsoffulltemperaturerangeareguaranteedbydesign(GBD).Note3:Theswitchcurrentlimitisrelatedtodutycycle.PleaserefertoFigure15fordetail.DataSheet6Apr.2009Rev.1.3BCDSemiconductorManufacturingLimitedWHITELEDSTEP-UPCONVERTERAP3031TypicalPerformanceCharacteristicsFigure6.MinimumOperatingVoltagevs.TemperatureFigure7.QuiescentCurrentvs.InputVoltageFigure4.Efficiencyvs.OutputCurrentFigure5.Efficiencyvs.InputVoltage(WLEDforwardvoltage(VF)=3.2VatIF=20mA,unlessot