XL4301芯龙(XLSEMI)一级代理推荐自带恒压恒流环路的降压型单片车充专用芯片

《XL4301芯龙(XLSEMI)一级代理推荐自带恒压恒流环路的降压型单片车充专用芯片》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、深圳市登辰易科技有限公司-------电子元件选型推荐WWW.DCY-CHINA.COMXLSEMIDatasheet3A180KHz45VBuckDC/DCConverterWithConstantCurrentLoopXL4301FeaturesGeneralDescription¢OperationVoltagefrom8Vto40VTheXL4301isa180KHzfixedfrequency¢AdjustVOUTfrom1.25VtoVIN-2VPWMbuck(step-down)DC/DCconverter,¢MinimumDropOut0

2、.3Vcapableofdrivinga2.5Aloadwithhigh¢Fixed180KHzSwitchingFrequencyefficiency,lowrippleandexcellentlineand¢Maximum3ASwitchingCurrentloadregulation.Requiringaminimum¢InternalOptimizePowerMOSFETnumberofexternalcomponents,theregulator¢Excellentlineandloadregulationissimpletouseandinc

3、ludeinternal¢Withoutputconstantcurrentloopfrequencycompensationanda¢Builtinthermalshutdownfunctionfixed-frequencyoscillator.¢Builtincurrentlimitfunction¢BuiltinoutputcablecompensationThePWMcontrolcircuitisabletoadjustthe¢Recommendoutputpowerlessthan13Wdutyratiolinearlyfrom0to100%

4、.Anenable¢SOP8-EP(ExposedPAD)packagefunction,anovercurrentprotectionfunctionisbuiltinside.AninternalcompensationblockisbuiltintominimizeexternalApplicationscomponentcount.¢CarCharger¢BatteryChargerTheXL4301builtinasimple,¢LCDMonitorandLCDTVuser-programmableoutputcablevoltagedrop¢

5、Portableinstrumentpowersupplycompensationfunction.Usethecurvein¢Telecom/NetworkingEquipmentTable2tochoosethepropercompensation¢Buckconstantcurrentdriverresistancevaluesforcablecompensation.Figure1.PackageTypeofXL4301Rev1.0www.xlsemi.com1深圳市登辰易科技有限公司-------电子元件选型推荐WWW.DCY-CHINA.CO

6、MXLSEMIDatasheet3A180KHz45VBuckDC/DCConverterWithConstantCurrentLoopXL4301PinConfigurationsThebackexposedPADisSW.Figure2.PinConfigurationofXL4301(TopView)Table1.PinDescriptionPinNumberPinNameDescription1NCNotconnected.PowerSwitchOutputPin(SW).Outputistheswitchnodethat2SWsuppliesp

7、owertotheoutput.(Note:ConnectedthebackexposedPADtoSW.)3GNDGroundPin.FeedbackPin(FB).Throughanexternalresistordivider4FBnetwork,Feedbacksensestheoutputvoltageandregulatesit.Thefeedbackthresholdvoltageis1.25V.5CSOutputCurrentSensePin(Iload=0.11V/Rcs).6LCOutputcablecompensation.Inte

8、rnalVoltageRegulatorBypassCapacity.Intyp