汽车灯芯片 工作灯方案 长条灯方案.docx

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1、汽车灯芯片工作灯方案长条灯方案180KHz60V4ASwitchingCurrentBoostLEDConstantCurrentDriverXL6005FeaturesnWide3.6Vto32VInputVoltageRangen0.22VFBadjustableLEDdrivecurrentnDirectlydrive11Series1WLEDatVIN>=12VnFixed180KHzSwitchingFrequencynMax.4ASwitchingCurrentCapabilitynUpto94%efficiencynExcellentlineandloadregulation

2、nENPINTTLshutdowncapability&WithPWMDimmingFunctionnInternalOptimizePowerMOSFETnBuiltinSoft-StartFunctionnBuiltinFrequencyCompensationnBuiltinThermalShutdownFunctionnBuiltinCurrentLimitFunctionnAvailableinTO252-5LpackageApplicationsnLEDLightingnBoostconstantcurrentdrivernMonitorLEDBacklightingn7’to

3、15’LCDPanelsGeneralDescriptionTheXL6005regulatorisfixedfrequencyPWMBoost(step-up)LEDconstantcurrentdriver,capableofdrivingSeries1W/3W/5WLEDunitswithexcellentlineandloadregulation.Theregulatorissimpletousebecauseitincludesinternalfrequencycompensationandafixed-frequencyoscillatorsothatitrequiresami

4、nimumnumberofexternalcomponentstowork.TheXL6005coulddirectlydrive11Series1WLEDunitsatVIN>12V.ThePWMcontrolcircuitisabletoadjustthedutyratiolinearlyfrom0to95%.Anenablefunction,anovercurrentprotectionfunctionisbuiltinside.Aninternalcompensationblockisbuiltintominimizeexternalcomponentcount.Figure1.P

5、ackageTypeofXL6005180KHz60V4ASwitchingCurrentBoostLEDConstantCurrentDriverXL6005PinConfigurationsFigure2.PinConfigurationofXL6005(TopView)Table1PinDescriptionPinNumberPinNameDescription1GNDGroundPin.2ENEnablePin.DriveENpinlowtoturnoffthedevice,driveithightoturniton.Floatingisdefaulthigh.3SWPowerSw

6、itchOutputPin(SW).4VINSupplyVoltageInputPin.XL6005operatesfroma3.6Vto32VDCvoltage.BypassVintoGNDwithasuitablylargecapacitortoeliminatenoiseontheinput.5FBFeedbackPin(FB).Thefeedbackthresholdvoltageis0.22V.180KHz60V4ASwitchingCurrentBoostLEDConstantCurrentDriverXL6005FunctionBlockFigure3.FunctionBlo

7、ckDiagramofXL6005TypicalApplicationCircuitFigure4.XL6005TypicalApplicationCircuit180KHz60V4ASwitchingCurrentBoostLEDConstantCurrentDriverXL6005OrderingInformationOrderInformationMarkingIDPackageTypePackingTypeSup