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1、Datasheet5A180KHz36VBuckDCtoDCConverterXL4015FeaturesGeneralDescriptionnWide8Vto36VInputVoltageRangeTheXL4015isa180KHzfixedfrequencynOutputAdjustablefrom1.25Vto32VPWMbuck(step-down)DC/DCconverter,nMaximumDutyCycle100%capableofdrivinga5AloadwithhighnMinimumDropOut0.3Vefficiency,lowrippleandexcel
2、lentlineandnFixed180KHzSwitchingFrequencyloadregulation.Requiringaminimumn5AConstantOutputCurrentCapabilitynumberofexternalcomponents,theregulatornInternalOptimizePowerMOSFETissimpletouseandincludeinternalnHighefficiencyupto96%frequencycompensationandanExcellentlineandloadregulationfixed-freque
3、ncyoscillator.nBuiltinthermalshutdownfunctionnBuiltincurrentlimitfunctionThePWMcontrolcircuitisabletoadjustthenBuiltinoutputshortprotectionfunctiondutyratiolinearlyfrom0to100%.AnovernAvailableinTO263-5Lpackagecurrentprotectionfunctionisbuiltinside.Whenshortprotectionfunctionhappens,theoperation
4、frequencywillbereducedfrom180KHzto48KHz.AninternalcompensationApplicationsblockisbuiltintominimizeexternalnLCDMonitorandLCDTVcomponentcount.nPortableinstrumentpowersupplynTelecom/NetworkingEquipmentFigure1.PackageTypeofXL4015深圳市森利威爾電子有限公司聯(lián)系人：曾生聯(lián)系電話：13534002546移動(dòng)QQ：2355368875Rev1.11Datasheet5A18
5、0KHz36VBuckDCtoDCConverterXL4015PinConfigurationsFigure2.PinConfigurationofXL4015(TopView)Table1PinDescriptionPinNumberPinNameDescriptionGroundPin.Caremustbetakeninlayout.ThispinshouldbeplacedoutsideoftheSchottkyDiodetooutputcapacitor1GNDgroundpathtopreventswitchingcurrentspikesfrominducingvolt
6、agenoiseintoXL4015.FeedbackPin(FB).Throughanexternalresistordivider2FBnetwork,FBsensestheoutputvoltageandregulatesit.Thefeedbackthresholdvoltageis1.25V.PowerSwitchOutputPin(SW).SWistheswitchnodethat3SWsuppliespowertotheoutput.InternalVoltageRegulatorBypassCapacity.Intypicalsystem4VCapplication,
7、TheVCpinconnecta1ufcapacitytoVIN.SupplyVoltageInputPin.XL4015operatesfroma8Vto36V5VINDCvoltage.BypassVintoGNDwithasuitablylargecapacitortoeliminatenoiseontheinput.深圳市森利威爾電子有限公司聯(lián)系人：曾生聯(lián)系電話：13534002546移動(dòng)QQ：2355368875Rev1.12Datasheet5
