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XLSEMI80V1ASwitchingCurrentBuckPFMLEDConstantCurrentDriverXL8004Rev1.11FeaturesnWide24Vto80VInputVoltageRangen0.2Vcurrentsensevoltagereference.nDirectlydrive3~8seriesLED.nExcellentlineandloadregulation.nHighefficiencyupto96%.nInternaloptimizepowerHV-MOSFET.nBuiltinthermalshutdownfunction.nBuiltinUVLOfunction.nBuiltincurrentlimitingfunction.nBuiltinLEDopen&shortprotection.nBuiltinsoft-startcircuit.nAvailableinTO252-5Lpackage.ApplicationsnEBIKELEDLightingnLEDLighting&LEDLAMPnGeneralpurposelightingGeneralDescriptionTheXL8004isamonolithichighvoltageswitchingregulatorwithPFMthatisspecificallydesignedtooperatefroma24V~80VDCsupply.TheXL8004isahighefficiencyLEDdriverswitchingregulator.TheLEDstringisdrivenatDCconstantcurrentratherthanconstantvoltage,thusprovidingconstantcurrentoutputandenhancedreliability.Figure1.PackageTypeofXL8004XLSEMI80V1ASwitchingCurrentBuckPFMLEDConstantCurrentDriverXL8004Rev1.12PinConfigurationsFigure2.PinConfigurationofXL8004(TopView)Table1PinDescriptionPinNumberPinNameDescription1VDDThechipsupplyvoltage.2CSNCurrentSenseNegativeTerminal.3VINInputhighvoltagePin.(Operationvoltage24V~80V)4CSPCurrentSensePositiveTerminal.5SWOutputSwitchingPin.FunctionBlockFigure3.FunctionBlockDiagramofXL8004XLSEMI80V1ASwitchingCurrentBuckPFMLEDConstantCurrentDriverXL8004Rev1.13TypicalapplicationcircuitFigure4.XL8004TypicalApplication(3W~8WLEDlamp)OrderingInformationOrderInformationMarkingIDPackageTypePackingTypeSuppliedAsXL8004E1XL8004E1TO252-5L2500UnitsonTape&ReelXLSEMIPb-freeproducts,asdesignatedwith“E1”suffixintheparnumber,areRoHScompliant.AbsoluteMaximumRatings（Note1）ParameterSymbolValueUnitInputVoltageVin-0.3to90VPowerDissipationPDInternallylimitedmWThermalResistance(TO252-5L)(JunctiontoAmbient,NoHeatsink,FreeAir)RJA50ºC/WOperatingJunctionTemperatureTJ-40to125ºCStorageTemperatureTSTG-65to150ºCLeadTemperature(Soldering,10sec)TLEAD260ºCESD(HBM)3000VXLSEMIDatasheet80V1ASwitchingCurrentBuckPFMLEDConstantCurrentDriverXL8004Rev1.14Note1:StressesgreaterthanthoselistedunderMaximumRatingsmaycausepermanentdamagetothedevice.Thisisastressratingonlyandfunctionaloperationofthedeviceattheseoranyotherconditionsabovethoseindicatedintheoperationisnotimplied.Exposuretoabsolutemaximumratingconditionsforextendedperiodsmayaffectreliability.XL8004ElectricalCharacteristicsTa=25℃;unlessotherwisespecified.Referencetestcircuitfigure4SymbolParameterTestConditionMin.Typ.Max.UnitVCSPCSPVoltageVIN=24Vto80V,Iled=0.3A,Pout=8W190200210mVEfficiencyŋVIN=48V,Iled=0.3A,Pout=8W-94.9-%EfficiencyŋVIN=60V,Iled=0.3A,Pout=8W-94.6-%EfficiencyŋVIN=72V,Iled=0.3A,Pout=8W-92.4-%ElectricalCharacteristics(DCParameters)ParametersSymbolTestConditionMin.Typ.Max.UnitInputoperationvoltageVIN2480VSwitchingFrequencyFoscFigure4(8*1W)VIN=48V47.859.771.6KHzSwitchingFrequencyFoscFigure4(8*1W)VIN=60V56.570.684.7KHzSwitchingFrequencyFoscFigure4(8*1W)VIN=72V61.276.491.6KHzOutputLEDopenvoltageVopenFigure4VIN=72V36VDMOSDrain-SourceBreakdownVoltageVBRDSVGS=0V,IDS=250uA90VDMOSDrain-SourceonresistorRDSONIDS=0.5A,VGS=10V0.10.15OhmThermalShutdownOTPTj1650CThermalShutdownWindow250CXLSEMIDatasheet80V1ASwitchingCurrentBuckPFMLEDConstantCurrentDriverXL8004Rev1.15[1]Typicalapplicationcircuit(3W~8W)Figure5.XL8004SystemApplication(3W~8W)Thefigure5systemparametersasfollowing:VIN=36VDC1WLEDSeriesVin(V)Iin(mA)Vout(V)Iout(mA)Fosc(KHz)Effiency(%)335.98889.5930040.190.86435.9711312.7529745.593.16535.9713916.0229448.094.20635.9716319.1529047.794.72735.9618722.3328744.495.30835.9621025.5928538.096.58VIN=48VDC1WLEDSeriesVin(V)Iin(mA)Vout(V)Iout(mA)Fosc(KHz)Effiency(%)347.99679.6130541.991.16447.998712.7630149.691.99547.9810716.0429855.493.11647.9812519.1829558.894.34747.9814322.3629260.295.16847.9816225.602885979485XLSEMIDatasheet80V1ASwitchingCurrentBuckPFMLEDConstantCurrentDriverXL8004Rev1.16VIN=60VDC1WLEDSeriesVin(V)Iin(mA)Vout(V)Iout(mA)Fosc(KHz)Effiency(%)359.99569.6131042.388.68459.987212.7830751.290.85559.988816.0630458.692.50659.9810319.2030064.193.23759.9811822.3929768.293.96859.9713325.6529470.694.55VIN=72VDC1WLEDSeriesVin(V)Iin(mA)Vout(V)Iout(mA)Fosc(KHz)Effiency(%)372.06499.6331542.185.91472.056312.8031251.687.98572.057616.0930960.090.80672.048919.2330566.691.48772.0410122.4230272.093.06872.0411525.6829876.492.37Figure6.XL8004SystemefficiencycurveXLSEMIDatasheet80V1ASwitchingCurrentBuckPFMLEDConstantCurrentDriverXL8004Rev1.17[2]Typicalapplicationcircuit(6W~16W)Figure7.XL8004SystemApplication(6W~16W)Thefigure7systemparametersasfollowing:VIN=36VDC1WLEDSeriesVin(V)Iin(mA)Vout(V)Iout(mA)Fosc(KHz)Effiency(%)3*235.971839.7759522.088.314*235.9623412.9959124.791.235*235.9528616.2858625.892.796*235.9433619.4858325.394.057*235.9438522.7057923.294.998*235.9343325.8857519.595.65VIN=48VDC1WLEDSeriesVin(V)Iin(mA)Vout(V)Iout(mA)Fosc(KHz)Effiency(%)3*247.981409.7860123.487.504*247.9717913.0059727.690.385*247.9621816.2959330.692.396*247.9625619.4958932.393.507*247.9529422.7158532.994.248*247.9533025.9158132.495.14XLSEMIDatasheet80V1ASwitchingCurrentBuckPFMLEDConstantCurrentDriverXL8004Rev1.18VIN=60