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LP2951JAN

www.ti.com

SNVS408A–NOVEMBER2010–REVISEDAPRIL2013

LP2951JANSeriesofAdjustableMicropowerVoltageRegulators

CheckforSamples:LP2951JAN

1

FEATURES

DESCRIPTION

TheLP2951isamicropowervoltageregulatorwith

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•HighAccuracyOutputVoltage

verylowquiescentcurrent(75μAtyp.)andverylow

•Ensured100mAOutputCurrent

dropoutvoltage(typ.40mVatlightloadsand380mV

•ExtremelyLowQuiescentCurrent

at100mA).Itisideallysuitedforuseinbattery-

poweredsystems.Furthermore,thequiescentcurrent

•LowDropoutVoltage

increasesonlyslightlyindropout,prolongingbattery

•ExtremelyTightLoadandLineRegulation

life.

•VeryLowTemperatureCoefficient

Anadditionalfeatureisanerrorflagoutputwhich

•UseasRegulatororReference

warnsofalowoutputvoltage,oftenduetofalling

•NeedsMinimumCapacitanceforStability

batteriesontheinput.Itmaybeusedforapower-on

reset.Asecondfeatureisthelogic-compatible

•CurrentandThermalLimiting

shutdowninputwhichenablestheregulatortobe

•StablewithLow-ESROutputCapacitors(10mΩ

switchedonandoff.Also,thepartmaybepin-

to6Ω)

strappedfora5V,3V,or3.3Voutput(dependingon

•ErrorFlagWarnsofOutputDropout

theversion),orprogrammedfrom1.24Vto29Vwith

anexternalpairofresistors.

•Logic-ControlledElectronicShutdown

•OutputProgrammablefrom1.24to29V

CarefuldesignoftheLP2951hasminimizedall

contributionstotheerrorbudget.Thisincludesatight

initialtolerance(0.5%typ.),extremelygoodloadand

lineregulation(0.05%typ.)andaverylowoutput

voltagetemperaturecoefficient,makingthepart

usefulasalow-powervoltagereference.

ConnectionDiagram

TopView

Figure1.CDIPPackage

SeePackageNumberNAB0008A

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ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

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