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ID:15140811
大小:72.50 KB
页数:31页
时间:2018-08-01
《zxld1374 led驱动芯片资料》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
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(125mV8、hatlimitstheinternalnodetolessthan3V.ThispreventstheLEDandpowerswitchfromdeliveringtoomuchcurrentshouldADJgetoverdriven.Internal1.25VreferencevoltageoutputTemperatureAdjustinputforLEDthermalcurrentcontrolConnectther
8、hatlimitstheinternalnodetolessthan3V.ThispreventstheLEDandpowerswitchfromdeliveringtoomuchcurrentshouldADJgetoverdriven.Internal1.25VreferencevoltageoutputTemperatureAdjustinputforLEDthermalcurrentcontrolConnectther
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