MIC4452中文资料

5-70April1998MIC4451/4452MicrelGeneralDescriptionMIC4451andMIC4452CMOSMOSFETdriversaretough,efficient,andeasytouse.TheMIC4451isaninvertingdriver,whiletheMIC4452isanon-invertingdriver.Bothversionsarecapableof12A(peak)outputandcandrivethelargestMOSFETswithanimprovedsafeoperatingmargin.TheMIC4451/4452acceptsanylogicinputfrom2.4VtoVSwithoutexternalspeed-upcapacitorsorresistornetworks.Proprietarycircuitsallowtheinputtoswingnega-tivebyasmuchas5Vwithoutdamagingthepart.Additionalcircuitsprotectagainstdamagefromelectrostaticdischarge.MIC4451/4452driverscanreplacethreeormorediscretecomponents,reducingPCBarearequirements,simplifyingproductdesign,andreducingassemblycost.ModernBipolar/CMOS/DMOSconstructionguaranteesfree-domfromlatch-up.Therail-to-railswingcapabilityofCMOS/DMOSinsuresadequategatevoltagetotheMOSFETdur-ingpowerup/downsequencing.Sincethesedevicesarefabricatedonaself-alignedprocess,theyhaveverylowcrossovercurrent,runcool,uselittlepower,andareeasytodrive.Features•BiCMOS/DMOSConstruction•Latch-UpProof:FullyIsolatedProcessisInherentlyImmunetoAnyLatch-up.•InputWillWithstandNegativeSwingofUpto5V•MatchedRiseandFallTimes...............................25ns•HighPeakOutputCurrent............................12APeak•WideOperatingRange..............................4.5Vto18V•HighCapacitiveLoadDrive...........................62,000pF•LowDelayTime...........................................30nsTyp.•LogicHighInputforAnyVoltagefrom2.4VtoVS•LowSupplyCurrent..............450μAWithLogic1Input•LowOutputImpedance........................................1.0Ω•OutputVoltageSwingtoWithin25mVofGNDorVS•LowEquivalentInputCapacitance(typ).................7pFApplications•SwitchModePowerSupplies•MotorControls•PulseTransformerDriver•Class-DSwitchingAmplifiers•LineDrivers•DrivingMOSFETorIGBTParallelChipModules•LocalPowerON/OFFSwitch•PulseGeneratorsFunctionalDiagramINOUTMIC4451INVERTINGMIC4452NONINVERTING0.1mA0.3mA2kΩVSGNDMIC4451/445212A-PeakLow-SideMOSFETDriverBipolar/CMOS/DMOSProcessApril19985-71MIC4451/4452Micrel5OrderingInformationPartNo.TemperatureRangePackageConfigurationMIC4451BN–40°Cto+85°C8-PinPDIPInvertingMIC4451BM–40°Cto+85°C8-PinSOICInvertingMIC4451CT0°Cto+70°C5-PinTO-220InvertingMIC4452BN–40°Cto+85°C8-PinPDIPNon-InvertingMIC4452BM–40°Cto+85°C8-PinSOICNon-InvertingMIC4452CT0°Cto+70°C5-PinTO-220Non-InvertingPinConfigurations12348765VSOUTOUTGNDVSINNCGNDPlasticDIP(N)SOIC(M)TAB5OUT4GND3VS2GND1INTO-220-5(T)PinDescriptionPinNumberPinNumberPinNamePinFunctionTO-220-5DIP,SOIC12INControlInput2,44,5GNDGround:Duplicatepinsmustbeexternallyconnectedtogether.3,TAB1,8VSSupplyInput:Duplicatepinsmustbeexternallyconnectedtogether.56,7OUTOutput:Duplicatepinsmustbeexternallyconnectedtogether.3NCNotconnected.5-72April1998MIC4451/4452MicrelElectricalCharacteristics:(TA=25°Cwith4.5V≤VS≤18Vunlessotherwisespecified.)SymbolParameterConditionsMinTypMaxUnitsINPUTVIHLogic1InputVoltage2.41.3VVILLogic0InputVoltage1.10.8VVINInputVoltageRange–5VS+.3VIINInputCurrent0V≤VIN≤VS–1010μAOUTPUTVOHHighOutputVoltageSeeFigure1VS–.025VVOLLowOutputVoltageSeeFigure1.025VROOutputResistance,IOUT=10mA,VS=18V0.61.5ΩOutputHighROOutputResistance,IOUT=10mA,VS=18V0.81.5ΩOutputLowIPKPeakOutputCurrentVS=18V(SeeFigure6)12AIDCContinuousOutputCurrent2AIRLatch-UpProtectionDutyCycle≤2%1500mAWithstandReverseCurrentt≤300μsSWITCHINGTIME(Note3)tRRiseTimeTestFigure1,CL=15,000pF2040nstFFallTimeTestFigure1,CL=15,000pF2450nstD1DelayTimeTestFigure11530nstD2DelayTimeTestFigure13560nsPowerSupplyISPowerSupplyCurrentVIN=3V0.41.5mAVIN=0V80150μAVSOperatingInputVoltage4.518VAbsoluteMaximumRatings(Notes1,2and3)SupplyVoltage..............................................................20VInputVoltage..................................VS+0.3VtoGND–5VInputCurrent(VINVS)............................................50mAPowerDissipation,TAMBIENT≤25°CPDIP....................................................................960mWSOIC.................................................................1040mW5-PinTO-220..............................................................2WPowerDissipation,TCASE≤25°C5-PinTO-220.........................................................12.5WDeratingFactors(toAmbient)PDIP................................................................7.7mW/°CSOIC..............................................................8.3mW/°C5-PinTO-220....................................................17mW/°CStorageTemperature...............................–65°Cto+150°CLeadTemperature(10sec).......................................300°COperatingRatingsOperatingTemperature(Chip)..................................150°COperatingTemperature(Ambient)CVersion...................................................0°Cto+70°CBVersion................................................–40°Cto+85°CThermalImpedances(ToCase)5-PinTO-220(θJC)..............................................10°C/WApril19985-73MIC4451/4452Micrel5Figure1.InvertingDriverSwitchingTimeElectricalCharacteristics:(Overoperatingtemperaturerangewith4.5VVS18Vunlessother