LT4363-具电流限制功能的高电压浪涌抑制器

LT436314363fbFormoreinformation=6.8µFILOAD=500mA27VADJUSTABLECLAMP12V12VTheLT®4363surgestopperprotectsloadsfromhighvoltagetransients.Itregulatestheoutputduringanovervoltageevent,suchasloaddumpinvehicles,bycontrollingthegateofanexternalN-channelMOSFET.Theoutputislimitedtoasafevalueallowingtheloadstocontinuefunctioning.TheLT4363alsomonitorsthevoltagedropbetweentheSNSandOUTpinstoprotectagainstovercurrentfaults.Aninternalamplifierlimitsthevoltageacrossthecurrentsenseresistorto50mV.Ineitherfaultcondition,atimerisstartedinverselyproportionaltoMOSFETstress.Beforethetimerexpires,theFLTpinpullslowtowarnofanimpend-ingpowerdown.Iftheconditionpersists,theMOSFETisturnedoff.TheLT4363-1remainsoffuntilresetwhereastheLT4363-2restartsafteracooldownperiod.Twoprecisioncomparatorscanmonitortheinputsupplyforovervoltage(OV)andundervoltage(UV)conditions.WhenthepotentialisbelowtheUVthreshold,theexternalMOSFETiskeptoff.IftheinputsupplyvoltageisabovetheOVthreshold,theMOSFETisnotallowedtoturnbackon.Back-to-backMOSFETscanbeusedinlieuofaSchottkydiodeforreverseinputprotection,reducingvoltagedropandpowerloss.Ashutdownpinreducesthequiescentcurrenttolessthan7µAduringshutdown.TypicalapplicaTionFeaTuresDescripTionHighVoltageSurgeStopperwithCurrentLimit4A,12VOvervoltageOutputRegulatorwith150VSurgeProtectionOvervoltageProtectorRegulatesOutputat27VDuringTransientapplicaTionsnWithstandsSurgesOver100VwithVCCClampnWideOperatingVoltageRange:4Vto80VnAdjustableOutputClampVoltagenFastOvercurrentLimit:LessThan5µsnReverseInputProtectionto–60VnAdjustableUV/OVComparatorThresholdsnLow7µAShutdownCurrentnShutdownPinWithstands–60Vto100VnAdjustableFaultTimernControlsN-ChannelMOSFETnLessThan1%RetryDutyCycleDuringFaults,LT4363-2nAvailablein12-Pin(4mm×3mm)DFN,12-PinMSOPand16-PinSOPackagesnAutomotive/Avionic/IndustrialSurgeProtectionnHotSwap™/LiveInsertionnHighSideSwitchforBatteryPoweredSystemsnIntrinsicSafetyApplicationsL,LT,LTC,LTM,LinearTechnologyandtheLinearlogoareregisteredtrademarksandNoRSENSE,ThinSOTandHotSwaparetrademarksofLinearTechnologyCorporation.Allothertrademarksarethepropertyoftheirrespectiveowners.0.1µF10Ω10mΩFDB33N25VIN12V4363TA01LT4363-2GNDTMROUTGATESNSUVSHDNOVFAULTOUTPUTCLAMPAT16VENOUTFLTFB1kSMAJ58A22µF0.1µFVCCDC/DCCONVERTERGNDSHDNVCC4.99k127k49.9k57.6kLT436324363fbFormoreinformation–60Vto100VSNS,OUT.................................................–0.3Vto100VSNStoOUT.................................................–30Vto30VGATE(Note3)..................................–0.3VtoSNS+10VENOUT,FLT..............................................–0.3Vto100VFB.............................................................–0.3Vto5.5VTMR......................................................................0.5mA(Notes1,2)LT4363-1LT4363-1LT4363-112111098713GND123456TMRENOUTFLTGNDUVGNDFBOUTSNSGATEVCCSHDNTOPVIEWDEPACKAGE12-LEAD(4mm×3mm)PLASTICDFNTJMAX=125°C,θJA=43°C/WEXPOSEDPAD(PIN13)ISGND,CONNECTIONTOPCBOPTIONAL123456FBOUTSNSGATEVCCSHDN121110987TMRENOUTFLTGNDUVGNDTOPVIEWMSPACKAGE12-LEADPLASTICMSOPTJMAX=125°C,θJA=135°C/WTOPVIEWSPACKAGE16-LEADPLASTICSO12345678161514131211109OUTSNSNCGATENCVCCNCSHDNFBTMRNCENOUTFLTGNDUVGNDTJMAX=125°C,θJA=80°C/WLT4363-2LT4363-2LT4363-212111098713GND123456TMRENOUTFLTGNDUVOVFBOUTSNSGATEVCCSHDNTOPVIEWDEPACKAGE12-LEAD(4mm×3mm)PLASTICDFNTJMAX=125°C,θJA=43°C/WEXPOSEDPAD(PIN13)ISGND,CONNECTIONTOPCBOPTIONAL123456FBOUTSNSGATEVCCSHDN121110987TMRENOUTFLTGNDUVOVTOPVIEWMSPACKAGE12-LEADPLASTICMSOPTJMAX=125°C,θJA=135°C/WTOPVIEWSPACKAGE16-LEADPLASTICSO12345678161514131211109OUTSNSNCGATENCVCCNCSHDNFBTMRNCENOUTFLTGNDUVOVTJMAX=125°C,θJA=80°C/WpinconFiguraTionOperatingTemperatureRangeLT4363C..................................................0°Cto70°CLT4363I................................................–40°Cto85°CLT4363H............................................–40°Cto125°CLT4363MP.........................................–55°Cto125°CStorageTemperatureRangeDE12..................................................–65°Cto125°CMS,SO..............................................–65°Cto150°CLeadTemperature(Soldering,10sec)MS,SO.............................................................300°CLT436334363fbFormoreinformation*PACKAGEDESCRIPTIONTEMPERATURERANGELT4363CDE-1#PBFLT4363CDE-1#TRPBF4363112-Lead(4mm×3mm)PlasticDFN0°Cto70°CLT4363IDE-1#PBFLT4363IDE-1#TRPBF4363112-Lead(4mm×3mm)PlasticDFN–40°Cto85°CLT4363HDE-1#PBFLT4363HDE-1#TRPBF4363112-Lead(4mm×3mm)PlasticDFN–40°Cto125°CLT4363CDE-2#PBFLT4363CDE-2#TRPBF4363212-Lead(4mm×3mm)PlasticDFN0°Cto70°CLT4363IDE-2#PBFLT4363IDE-2#TRPBF4363212-Lead(4mm×3mm)PlasticDFN–40°Cto85°CLT4363HDE-2#PBFLT4363HDE-2#TRPBF4363212-Lead(4mm×3mm)PlasticDFN–40°Cto125°CLT4363CMS-1#PBFLT4363CMS-1#TRPBF4363112-LeadPlasticMSOP0°Cto70°CLT4363HMS-1#PBFLT4363HMS-1#TRPBF4363112-LeadPlasticMSOP–40°Cto125°CLT4363IM