LED免电源驱动IC、高压驱动IC、免电源整体方案

EC4211ConstantCurrentLinearLEDDriverE-CMOSCorp.()3D03NRev.F003Page1of8RGAIN(Optional)120Vac60HzCurrentSetPointVLED(total)=120V＋－ILED60mAREXTFEATURES•ConstantLEDCurrentforVaryingInputVoltage•AdjustedCurrentOperation•LowQuiescentCurrent•SimplifiesCircuitandSystemDesigns•CompactComponentCount•ProvidedHigherCurrentbyParallel•TemperatureCompensatedConstantCurrent•OverCurrentProtection•OverTemperatureProtection•LEDCurrentProgrammableThermalFoldbackforthermalProtection•SOP-8LPackageorDFN-8LPackageorTO252-5LPackageAPPLICATIONS•LEDDriver•LightingApplications•LampIndicators•CandleLight•LowCostsolution•ConstantCurrentSourceGENERALDESCRIPTIONTheEC4211isaconstantcurrentlinearLEDdriverforreplacediscretesolutionsinAC/DCpowerapplication(upto265V).Thedeviceistodriveaconstantcurrentof±5%variationbyanexternalresistorfordifferentLEDstrings.Thesolutioneliminatestheneedofindividualcomponentsbycombiningthemintoasinglepackage,whichresultsinasignificantreductionofbothsystemcostandboardspace.Forhighercurrentapplication,multipleEC4211scanalsobeusedinparallelsuchas40mA,80mAor160mA.TheEC4211isself-protectedagainstovertemperatureandovercurrent.InternalthermalfoldbackfunctionregulatesLEDdrivercurrentautomaticallytolimitdietemperatureduringhighpoweroperationorhighambienttemperatureconditions.Thesefeaturesprovidemaximumsystemprotectionforthedemandinglightingapplications.TheEC4211isavailableinaspacesavingSOP-8Lpackage,DFN-8LpackageorTO252-5Lpackage,andtheoperatingtemperatureisfrom–40°Cto+125°C.TYPICALAPPLICATIONCIRCUITFig.1SimplifiedApplicationCircuitEC4211ConstantCurrentLinearLEDDriverE-CMOSCorp.()3D03NRev.F003Page2of8123(SOP-8L)48765RGAINVLEDVLEDVLEDVLEDVINREXTNCThermalPAD5RGAIN4VIN1323(TO252-5L)REXTNCVLEDThermalPADDFN-8LREXTVINNCThermalPAD12345678VLEDVLEDVLEDVLEDRGAINABSOLUTEMAXIMUMRATINGSVINSupplyVoltage...................................................500VREXT,RGAINOperationVoltages…................................6VOperatingTemperature…………………-40°Cto+125°CStorageTemperature……………………-55°Cto+150°CMaximumDieTemperature……………………….+150°CLeadTemperature……………………………….…+260°CESDHBMVoltage……………………………....……2.5kVESDMMVoltage………………………………………300VPINCONFIGURATIONNote:AbsoluteMaximumRatingsarethosevaluesbeyondwhichdamagetothedevicemayoccur.Functionaloperationundertheseconditionsisnotimplied.Continuousoperationofthedeviceattheabsoluteratinglevelmayaffectdevicereliability.OrderingInformationPartNo.PackageTypeMarkingInformationRemarkEC4211NNMHRSOP-8LEC4211YYWWLLLLLTYYWW：DateCodeLLLLL：LotNoT：internaltrackingcodeEC4211NNF2RDFN-8LEC4211LLLLLYYWWTEC4211NNA5RTO252-5LEC4211YYWWLLLLLTELECTRICALCHARACTERISTICSTA=25°CunlessotherwisespecifiedPARAMETERCONDITIONSMINTYPMAXUNITElectricalCharacteristicVINOperationVoltage15265VILEDCurrentRegulation(Note1)VIN=120Vdc,REXT=15Ω,VLED=100V38.1640.1742.18mAVIN=220Vdc,REXT=30Ω,VLED=200V19.1620.1721.18mAILED(MAX)MaximumCurrentRegulationVDROP≦16V(Note2)60mAIQQuiescentCurrentVIN=20Vdc,REXT=Open170µAVREFReferenceVoltage(Note3)0.6VVDROP(MAX)MaximumDropoutVoltage(Note4)VIN=265Vac,REXT=30Ω,VLED=220V170VThermalCharacteristic△VREF(T)VREFTemperatureCoefficientTA=-40°C~125°C0.01％/℃TAOperatingTemperature-40125℃PDTotalPowerDissipation(Operation)1WRΘJAThermalResistanceSOP-8LPackage75℃/WDFN-8LPackage33.2℃/WTO252-5LPackage68℃/WProtectionOCPOverCurrentProtection150mAOTPOverTemperatureProtection150℃TFPThermalFoldbackProtection(Note5)90℃Note:1.ILED=0.6/REXT+IQ2.VDROP=VIN－VLED－0.6,PD＜1W(Noheatsink)3.VREF=V(REXT)－VLED4.ThecurrentregulationisforainstantaneousAClineinputcurrentonly,nottoexceedthermalcharacteristicsofpackage.5.ILED(TFP)=ILED－V(RGAIN)/RGAINE-CMOSCorp.()3D03NRev.F003EC4211ConstantCurrentLinearLEDDriverPage3of8ControlCircuitsVINVLEDRGAINREXTProtectionCircuitsFUNCTIONDIAGRAMPINDESCRIPTIONSTO252-5LPackageDFN-8L/SOP-8LPackagePINSymbolDescription1REXTAnexternalresistorbetweenREXTandVLEDpinsetsdifferentcurrentregulationforLEDstrings.2NCNointernalmechanicallyconnection.Leavethispinopen.3VLEDTheLEDstringsareconnectedfromthispintoground.4VINInputsupplyvoltage.5RGAINProgrammablethermalfoldbackprotectionforcurrentregulationtolimitdietemperatureduringhighpoweroperationorhighambienttemperatureconditions.PINSymbolDescription1RGAINProgrammablethermalfoldbackprotectionforcurrentregulationtolimitdietemperatureduringhighpoweroperationorhighambienttemperatureconditions.2VINInputsupplyvoltage.3NCNointernalmechanicallyconnection.Leavethispinopen.4REXTAnexternalresistorbetweenREXTandVLEDpinsetsdifferentcurrentregulationforLEDstrings.5,6,7,8VLEDTheLEDstringsareconnectedfromthesepinstoground.Fig.2DetailedBlockDiagramE-CMOSCorp.()3D03NRev.F003EC4211ConstantCurrentLinearLEDDriverPage4of818.51919.52020.52121.522-40-25-105203550658095110125TEMPERATURE(℃)OUTPUTCURRENT(mA)00.10.20.30.40.50.60.70102030405060INPUTVOLTAGE(V)VREF(V)80100120140160180200-40-25-105203550658095110125TEMPERATURE(℃)QUIESCENTCURRENT(uA)05101520250153045607590105120135TEMPERATURE(℃)OUTPUTCURRENT(mA)0102030405060708090100010203040506