Texas Instruments LP2953 Bedienungsanleitung

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LP2952-N

,

LP2952A

,

LP2953

,

LP2953A

SNVS095F–MAY2004–REVISEDMARCH2015

LP295xAdjustableMicropowerLow-DropoutVoltageRegulators

1Features3Description

TheLP2952andLP2953aremicropowervoltage

1

•2.3-Vto30-VInputVoltageRange

regulatorswithverylowquiescentcurrent(130μA

•OutputVoltageAdjustsfrom1.23Vto29V

typicalat1-mAload)andverylowdropoutvoltage

•250-mAOutputCurrent

(typically60mVatlightloadand470mVat250-mA

loadcurrent).Theyareideallysuitedforbattery-

•ExtremelyLowQuiescentCurrent

poweredsystems.Furthermore,thequiescentcurrent

•LowDropoutVoltage

increasesonlyslightlyatdropout,whichprolongs

•ExtremelyTightLineandLoadRegulation

batterylife.

•VeryLowTemperatureCoefficient

TheLP2952andLP2953retainallthedesirable

•CurrentandThermalLimiting

characteristicsoftheLP2951,butofferincreased

outputcurrent,additionalfeatures,andanimproved

•ReverseBattery-InputProtection

shutdownfunction.

•50-mA(Typical)AutomaticOutputDischarge

Theautomaticoutputdischargepullstheoutputdown

•LP2953VersionsOnly

quicklywhentheshutdownisactivated.

–AuxiliaryComparatorIncludedWithCMOS-

andTTL-CompatibleOutputLevels.CanBe

Theerrorflaggoeslowiftheoutputvoltagedropsout

ofregulation.

UsedforFaultDetection,Low-InputLine

Detection,andsoon.

Reversebattery-inputprotectionisprovided.

Theinternalvoltagereferenceismadeavailablefor

2Applications

externaluse,providingalowtemperaturecoefficient

•High-EfficiencyLinearRegulator

(20ppm/°C)referencewithverygoodline(0.03%)

andload(0.04%)regulation.

•RegulatorWithUndervoltageShutdown

•Low-DropoutBattery-PoweredRegulator

DeviceInformation

(1)

•Snap-ON/Snap-OFFRegulator

PARTNUMBERPACKAGEBODYSIZE(NOM)

LP2952xSOIC(16)9.90mm×3.91mm

SOIC(16)9.90mm×3.91mm

LP2953x

PDIP(16)21.755mm×6.35mm

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

TypicalApplicationSchematic

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Produktspezifikationen