MP2143

MP21433A,5.5V,1.2MHz,40μAIQ,COTSynchronousStepDownSwitcherMP2143Rev.1.05©2012MPS.AllRightsReserved.TheFutureofAnalogICTechnologyDESCRIPTIONTheMP2143isamonolithic,step-down,switch-modeconverterwithinternalpowerMOSFETs.Itcanachieveupto3Acontinuousoutputcurrentfroma2.5V–to-5.5Vinputvoltagewithexcellentloadandlineregulation.Theoutputvoltagecanberegulatedaslowas0.6V.Constant-on-timecontrolprovidesfasttransientresponseandeasesloopstabilization.Fault-conditionprotectionsincludecycle-by-cyclecurrentlimitingandthermalshutdown.TheMP2143isavailableinsmallTSOT23-8packageandrequiresonlyaminimalnumberofreadily-availablestandardexternalcomponents.TheMP2143isidealforawiderangeofapplicationsincludinghigh-performanceDSPs,FPGAs,smartphones,portableinstruments,andDVDdrivers.FEATURES•Wide2.5V-to-5.5VOperatingInputRange•OutputVoltageasLowas0.6V•100%DutyCycleinDropout•Upto3AOutputCurrent•LowIQ:40µA•80mΩand40mΩInternalPowerMOSFETSwitches•Default1.2MHzSwitchingFrequency•ENandPower-GoodforPowerSequencing•Cycle-by-CycleOver-CurrentProtection•AutoDischargeatPowerOff•Short-CircuitProtectwithHiccupMode•StablewithLow-ESROutputCeramicCapacitors•AvailableinaTSOT23-8PackageAPPLICATIONS•LowVoltageI/OSystemPower•Handheld/Battery-poweredSystems•Wireless/NetworkingCardsAllMPSpartsarelead-freeandadheretotheRoHSdirective.ForMPSgreenstatus,pleasevisitMPSwebsiteunderQualityAssurance.“MPS”and“TheFutureofAnalogICTechnology”areRegisteredTrademarksofMonolithicPowerSystems,Inc.TYPICALAPPLICATIONMP2143GNDFBVINC110FENVIN2.5Vto5.5VVOUT1.2V/3ASWC210F32815R1200kR2200kPGENPG4,6OUT7L11HMP2143–3A,5.5V,1.2MHz,40μAIQ,COTSYNCHRONOUSSTEP-DOWNSWITCHERMP2143Rev.1.05©2012MPS.AllRightsReserved.ORDERINGINFORMATIONPartNumber*PackageTopMarkingMP2143DJTSOT23-8ACE*ForTape&Reel,addsuffix–Z(e.g.MP2143DJ–Z);ForRoHScompliantpackaging,addsuffix–LF(e.g.MP2143DJ–LF–Z)PACKAGEREFERENCETOPVIEW43218765PGVINSWPGNDENFBAGNDOUTSOT23-8ABSOLUTEMAXIMUMRATINGS(1)SupplyVoltageVIN.........................................6VVSW........................(-3Vfor5ns)to(VIN+0.3V)AllOtherPins.................................-0.3Vto+6VJunctionTemperature...............................150°CLeadTemperature....................................260°CContinuousPowerDissipation(TA=25°C)(2)……….….................................................1.25WStorageTemperature...............-65°Cto+150°CRecommendedOperatingConditions(3)SupplyVoltageVIN..........................2.5Vto5.5VOutputVoltageVOUT.................0.6VtoVIN-0.5VOperatingJunctionTemp.(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.MP2143–3A,5.5V,1.2MHz,40μAIQ,COTSYNCHRONOUSSTEP-DOWNSWITCHERMP2143Rev.1.05©2012MPS.AllRightsReserved.ELECTRICALCHARACTERISTICS(5)VIN=5V,TA=25°C,unlessotherwisenoted.ParameterSymbolConditionMinTypMaxUnits2.5V≤VIN≤5.5V-1.5%0.600+1.5%FeedbackVoltageVFBTA=-40oCto+85oC-2%+2%V/%FeedbackCurrentIFBVFB=0.63V10nAPFETSwitchONResistanceRDSON_P80mΩNFETSwitchONResistanceRDSON_N40mΩSwitchLeakageVEN=0V,VIN=5VVSW=0Vand5V0.12μAPFETCurrentLimit4.24.8ANFETSwitchSinkingCurrentINSWVOUT=1.2V,VFB=0.7V100μAVIN=5V,VOUT=1.2V200ONTimetONVIN=3.6V,VOUT=1.2V277nSVIN=5V,VOUT=1.2V,IOUT=1A-20%1200+20%kHzSwitchingfrequencyfsTA=-40oCto+85oC-25%1200+25%kHzMinimumOFFTimetMIN-OFF50nsSoft-StartTimetSS-ON1.3msSoft-StopTimetSS-OFF1msPower-GoodUpperTripThresholdPGHFBvoltagerespecttotheregulation+10%%Power-GoodLowerTripThresholdPGL-10%%Power-GoodDelayPGD110μsPower-GoodSinkCurrentCapabilityVPG-LSink1mA0.4VPower-GoodLogicHighVoltageVPG-HVIN=5V,VFB=0.6V4.9VPower-GoodInternalPull-UpResistorRPG500kΩUnder-VoltageLockoutThresholdRising2.02.22.4VUnder-VoltageLockoutThresholdHysteresis150mVENInputLogicLowVoltage0.4VENInputLogicHighVoltage1.2VVEN=2V2μAENInputCurrentVEN=0V0.1μASupplyCurrent(Shutdown)VEN=0V0.1μASupplyCurrent(Quiescent)VEN=2V,VFB=0.63V,VIN=3.6V40μAThermalShutdown150°CThermalHysteresis30°CNotes:5)Guaranteedbydesign.MP2143–3A,5.5V,1.2MHz,40μAIQ,COTSYNCHRONOUSSTEP-DOWNSWITCHERMP2143Rev.1.05