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LP38501-ADJ

,

LP38503-ADJ

SNVS522I–AUGUST2007–REVISEDAUGUST2015

LP3850x-ADJ,LP3850xA-ADJ3-AFlexCapLowDropoutLinearRegulatorfor

2.7-Vto5.5-VInputs

1Features3Description

TI'sFlexCaplow-dropout(LDO)linearregulators

1

•InputVoltage:2.7Vto5.5V

featureuniquecompensationthatallowuseofany

•AdjustableOutputVoltage:0.6Vto5V

typeofoutputcapacitorwithnolimitsonminimumor

•FlexCap:StablewithCeramic,Tantalum,or

maximumequivalentseriesresistance(ESR).The

AluminumCapacitors

LP38501andLP38503seriesofLDOsoperatefrom

a2.7-Vto5.5-Vinputsupply.Theseultra-low-dropout

•StableWith10-µFInputandOutputCapacitors

linearregulatorsrespondveryquicklytostep

•LowGround-PinCurrent

changesinload,makingthemsuitableforlow-voltage

•25-nAQuiescentCurrentinShutdownMode

microprocessorapplications.DevelopedonaCMOS

process(utilizingaPMOSpasstransistor)the

•EnsuredOutputCurrentof3A

LP38501-ADJandLP38503-ADJhavelowquiescent

•EnsuredV

ADJ

Accuracyof±1.5%at25°C(A

currentsthatchangelittlewithloadcurrent.

Grade)

•GNDPinCurrent:Typically2mAat3-Aload

•EnsuredAccuracyof±3.5%at25°C(STD)

current.

•OvertemperatureandOvercurrentProtection

•DisableMode:Typically25-nAquiescentcurrent

•ENABLE(EN)Pin(LP38501only)

whentheENpinispulledlow.

•SimplifiedCompensation:Stablewithanytypeof

•–40°Cto+125°COperatingTemperatureRange

outputcapacitor,regardlessofESR.

•PrecisionOutput:Agradeversionsavailablewith

2Applications

1.5%V

ADJ

tolerance(25°C)and3%overline,

•ASICPowerSuppliesIn:

load,andtemperature.

–Printers,GraphicsCards,DVDPlayers

DeviceInformation

(1)

–SetTopBoxes,Copiers,Routers

PARTNUMBERPACKAGEBODYSIZE(NOM)

•DSPandFPGAPowerSupplies

DDPAK/TO-263(5)10.16mmx8.42mm

LP38501

•SMPSRegulator

LP38503

TO-263(5)10.16mmx9.85mm

•Conversionfrom3.3-Vor5-VRail

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

TypicalApplicationCircuits

*Minimumcapacitancerequired(seeApplicationandImplementation).

*Minimumcapacitancerequired(seeApplicationandImplementation).

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Produktspecifikationer