MP2315产品参数规格书

MP2315HighEfficiency3A,24V,500kHzSynchronousStepDownConverterMP2315Rev.1.01©2014MPS.AllRightsReserved.TheFutureofAnalogICTechnologyDESCRIPTIONTheMP2315isahighfrequencysynchronousrectifiedstep-downswitchmodeconverterwithbuiltininternalpowerMOSFETs.Itoffersaverycompactsolutiontoachieve3Acontinuousoutputcurrentoverawideinputsupplyrangewithexcellentloadandlineregulation.TheMP2315hassynchronousmodeoperationforhigherefficiencyoveroutputcurrentloadrange.Currentmodeoperationprovidesfasttransientresponseandeasesloopstabilization.FullprotectionfeaturesincludeOCPandthermalshutdown.TheMP2315requiresaminimumnumberofreadilyavailablestandardexternalcomponentsandisavailableinaspacesaving8-pinTSOT23package.FEATURESWide4.5Vto24VOperatingInputRange3ALoadCurrent90mΩ/40mΩLowRds(on)InternalPowerMOSFETsLowQuiescentCurrentHighEfficiencySynchronousModeOperationFixed500kHzSwitchingFrequencyFrequencySyncfrom200kHzto2MHzExternalClockAAMPowerSaveModeInternalSoftStartOCPProtectionandHiccupThermalShutdownOutputAdjustablefrom0.8VAvailableinan8-pinTSOT-23packageAPPLICATIONSNotebookSystemsandI/OPowerDigitalSetTopBoxesFlatPanelTelevisionandMonitorsAllMPSpartsarelead-freeandadheretotheRoHSdirective.ForMPSgreenstatus,pleasevisitMPSwebsiteunderProducts,QualityAssurancepage.“MPS”and“TheFutureofAnalogICTechnology”areregisteredtrademarksofMonolithicPowerSystems,Inc.TYPICALAPPLICATION60657075808590951000.010.1110MP2315–24V,3ASYNCSTEPDOWNCONVERTERMP2315Rev.1.01©2014MPS.AllRightsReserved.ORDERINGINFORMATIONPartNumber*PackageTopMarkingMP2315GJTSOT23-8AGC*ForTape&Reel,addsuffix–Z(e.g.MP2315GJ–Z);PACKAGEREFERENCEAAMINSWGNDFBVCCEN/SYNCBST12348765TOPVIEWTSOT23-8ABSOLUTEMAXIMUMRATINGS(1)VIN................................................–0.3Vto+28VVSW........–0.3V(-5V10ns)to+28V(30V10ns)VBST........................................................VSW+6VAllOtherPins..................................-0.3Vto+6VContinuousPowerDissipation(TA=+25°C)(2)....................................................................1.25WJunctionTemperature...............................150°CLeadTemperature....................................260°CStorageTemperature.................-65°Cto150°CRecommendedOperatingConditions(3)SupplyVoltageVIN.............................4.5to24VOutputVoltageVOUT....................0.8VtoVIN*DVOperatingJunctionTemp(TJ)..-40°Cto+125°CThermalResistance(4)θJAθJCTSOT23-8…………………...…….100…..55..°C/WNotes:1)Exceedingtheseratingsmaydamagethedevice.2)ThemaximumallowablepowerdissipationisafunctionofthemaximumjunctiontemperatureTJ(MAX),thejunction-to-ambientthermalresistanceθJA,andtheambienttemperatureTA.ThemaximumallowablecontinuouspowerdissipationatanyambienttemperatureiscalculatedbyPD(MAX)=(TJ(MAX)-TA)/θJA.Exceedingthemaximumallowablepowerdissipationwillcauseexcessivedietemperature,andtheregulatorwillgointothermalshutdown.Internalthermalshutdowncircuitryprotectsthedevicefrompermanentdamage.3)Thedeviceisnotguaranteedtofunctionoutsideofitsoperatingconditions.4)MeasuredonJESD51-7,4-layerPCB.MP2315–24V,3ASYNCSTEPDOWNCONVERTERMP2315Rev.1.01©2014MPS.AllRightsReserved.ELECTRICALCHARACTERISTICS(5)VIN=12V,TA=25°C,unlessotherwisenoted.ParameterSymbolConditionMinTypMaxUnitsSupplyCurrent(Shutdown)IINVEN=0V1μASupplyCurrent(Quiescent)IqVEN=2V,VFB=1V,AAM=0.5V130180240μAHSSwitchOnResistanceHSRDS-ONVBST-SW=5V90mΩLSSwitchOnResistanceLSRDS-ONVCC=5V40mΩSwitchLeakageSWLKGVEN=0V,VSW=12V1μACurrentLimitILIMITDutyCycle=40%4.55.56.5AOscillatorFrequencyfSWVFB=750mV420500620kHzFold-backFrequencyfFBVFB=200mV0.5fSWMaximumDutyCycleDMAXVFB=750mV9095%MinimumOnTime(5)TON_MIN60nsSyncFrequencyRangefSYNC0.22MHzFeedbackVoltageVFBTA=25ºC779791803mVFeedbackCurrentIFBVFB=820mV1050nAENRisingThresholdVEN_RISING1.21.41.6VENHysteresisVEN_HYS80150220mVVEN=2V1.522.5μAENInputCurrentIENVEN=0050nAENTurnOffDelayENTd-off61014μsVINUnderVoltageLockoutThreshold-RisingINUVVth3.73.94.1VVINUnderVoltageLockoutThreshold-HysteresisINUVHYS550650750mVVCCRegulatorVCC4.654.95.15VVCCLoadRegulationICC=5mA013%Soft-StartPeriodTSS10%to90%0.81.52.2msThermalShutdown150ºCThermalHysteresis20ºCAAMSourceCurrentIAAM5.66.26.8μANotes:5)GuaranteedbydesignMP2315–24V,3ASYNCSTEPDOWNCONVERTERMP2315Rev.1.01©2014MPS.AllRightsReserved.TYPICALPERFORMANCECHARACTERISTICSVIN=19V,VOUT=5V,L=6.5uH,TA=25°C,unlessotherwisenoted.-1-0.6-0.20.20.6100.511.522.53PeakCurrentvs.DutyCycle-2-1.5-1-0.500.511.526810121416182022240102030405060708090158159160161162163164165166167168491419244050607080901000.010.11104050607080901000.010.11104050607080901000.010.1110405060708