zxld1374 led驱动芯片资料

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1、ZXLD1374LED驱动芯片资料本文由yuxuehu_12贡献pdf文档可能在WAP端浏览体验不佳。建议您优先选择TXT，或下载源文件到本机查看。AProductLineofDiodesIncorporatedZXLD137460VHIGHACCURACY1.5ABUCK/BOOST/BUCK-BOOSTLEDDRIVERCONVERTERDescriptionTheZXLD1374isanLEDdriverconverterICwithintegrated1.5Alowsideswitchtodriv

2、ehighcurrentLEDs.ItisamultitopologyconverterenablingittoefficientlycontrolthecurrentthroughseriesconnectedLEDs.Themulti-topologyenablesittooperateinBuck,BoostandBuck-boostconfigurations.The60Vcapabilitycoupledwithitsmulti-topologycapabilityenablesittobeus

3、edinawiderangeofapplicationsanddriveinexcessof16LEDsinseries.TheZXLD1374isamodifiedhystereticconverterusingapatentpendingcontrolschemeprovidinghighoutputcurrentaccuracyinallthreetopologies.HighaccuracydimmingisachievedthroughDCcontrolandhighfrequencyPWMco

4、ntrol.TheZXLD1374usestwopinsforfaultdiagnosis.Aflagoutputhighlightsafault,whilethemulti-levelstatuspingivesfurtherinformationontheexactfault.PinAssignmentsTSSOP-20EPADJREFTADJSHPSTATUSSGNDPGNDPGNDN/CN/C12345678910ZXLD1374ThermalPad20191817161514131211GIPW

5、MFLAGISMVINVAUXLXLXN/CN/CNEWPRODUCTFeatures????0.5%typicaloutputcurrentaccuracy6.3to60Voperatingvoltagerange1.5AintegratedlowsideswitchLEDdriversupportsBuck,BoostandBuck-boosttopologiesWidedynamicrangedimmingo20:1DCdimmingo1000:1dimmingrangeat500Hz???Upto

6、1MHzswitchingHightemperaturecontrolofLEDcurrentusingTADJGreenmoldcompound(NoBr,Sb)andRoHScompatibleTypicalApplicationCircuitCurveshowingLEDcurrentvs.TLEDZXLD1374Documentnumber:DS35032Rev.1-2Page1of35www.diodes.comOctober2010DiodesIncorporatedAProductLineo

7、fDiodesIncorporatedZXLD1374PinDescriptionsPinNamePinType(Note1)DescriptionAdjustinput(fordcoutputcurrentcontrol)ConnecttoREFtoset100%outputcurrent.Drivewithdcvoltage(125mV

8、hatlimitstheinternalnodetolessthan3V.ThispreventstheLEDandpowerswitchfromdeliveringtoomuchcurrentshouldADJgetoverdriven.Internal1.25VreferencevoltageoutputTemperatureAdjustinputforLEDthermalcurrentcontrolConnectther