升压型LED恒流驱动器芯片XL

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1、Datasheet400KHz42V2ASwitchingCurrentBoostLEDConstantCurrentDriverXL6003FeaturesGeneralDescriptionnWide5Vto18VInputVoltageRangeTheXL6003regulatorisfixedfrequencyPWMn0.22VFBadjustableLEDdrivecurrentBoost(step-up)LEDconstantcurrentdriver,capableofdrivingSeries1WLEDunitswithnDirectlydrive

2、6Series1WLEDatexcellentlineandloadregulation.TheregulatorisVIN>=12VsimpletousebecauseitincludesinternalfrequencynFixed400KHzSwitchingFrequencycompensationandafixed-frequencyoscillatorsonMax.2ASwitchingCurrentCapabilitythatitrequiresaminimumnumberofexternalnUpto92%efficiencycomponentst

3、owork.nExcellentlineandloadregulationTheXL6003coulddirectlydrive6Series1WLEDnENPINTTLshutdowncapability&unitsatVIN>12V.WithPWMDimmingFunctionnInternalOptimizePowerMOSFETThePWMcontrolcircuitisabletoadjustthenBuiltinSoft-StartFunctiondutyratiolinearlyfrom0to95%.AnenablenBuiltinFrequency

4、Compensationfunction,anovercurrentprotectionfunctionnBuiltinThermalShutdownFunctionisbuiltinside.AninternalcompensationnBuiltinCurrentLimitFunctionblockisbuiltintominimizeexternalcomponentcount.nAvailableinSOP8packageApplicationsnLEDLightingnBoostconstantcurrentdrivernMonitorLEDBackli

5、ghtingn7’to15’LCDPanelsFigure1.PackageTypeofXL6003Rev1.4www.junyi-ic.com1Datasheet400KHz42V2ASwitchingCurrentBoostLEDConstantCurrentDriverXL6003PinConfigurationsEN18GNDVIN27GNDXL6003FB36SWNC45SWFigure2.PinConfigurationofXL6003(TopView)Table1PinDescriptionPinNumberPinNameDescriptionEna

6、blePin.DriveENpinlowtoturnoffthedevice,driveit1ENhightoturniton.Floatingisdefaulthigh.SupplyVoltageInputPin.XL6003operatesfroma5Vto18V2VINDCvoltage.BypassVintoGNDwithasuitablylargecapacitortoeliminatenoiseontheinput.3FBFeedbackPin(FB).Thefeedbackthresholdvoltageis0.22V.4NCNoConnected.

7、PowerSwitchOutputPin(SW).Outputistheswitchnodethat5,6SWsuppliespowertotheoutput.7,8GNDGroundPin.Rev1.4www.junyi-ic.com2Datasheet400KHz42V2ASwitchingCurrentBoostLEDConstantCurrentDriverXL6003FunctionBlockFigure3.FunctionBlockDiagramofXL6003TypicalApplicationCircuitFigure4.XL6003Typical

8、Appli