Texas Instruments LP2953QML-SP Bedienungsanleitung

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LP2953QML,LP2953QML-SP

www.ti.com

SNVS395C–NOVEMBER2010–REVISEDAPRIL2013

LP2953QMLAdjustableMicropowerLow-DropoutVoltageRegulators

CheckforSamples:LP2953QML,LP2953QML-SP

1

FEATURES

DESCRIPTION

TheLP2953Aisamicropowervoltageregulatorwith

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•OutputVoltageAdjustsfrom1.23Vto29V

verylowquiescentcurrent(130μAtypicalat1mA

•Ensured250mAOutputCurrent

load)andverylowdropoutvoltage(typ.60mVat

•ExtremelyLowQuiescentCurrent

lightloadand470mVat250mAloadcurrent).Itis

ideallysuitedforbattery-poweredsystems.

•LowDropoutVoltage

Furthermore,thequiescentcurrentincreasesonly

•ExtremelyTightLineandLoadRegulation

slightlyatdropout,whichprolongsbatterylife.

•VeryLowTemperatureCoefficient

TheLP2953Aretainsallthedesirablecharacteristics

•CurrentandThermalLimiting

oftheLP2951,butoffersincreasedoutputcurrent,

•ReverseBatteryProtection

additionalfeatures,andanimprovedshutdown

function.

•50mA(Typical)OutputPulldownCrowbar

•AuxiliaryComparatorIncludedwithCMOS/TTL

Theinternalcrowbarpullstheoutputdownquickly

whentheshutdownisactivated.

CompatibleOutputLevels.Canbeusedfor

FaultDetection,LowInputLineDetection,etc.

Theerrorflaggoeslowiftheoutputvoltagedropsout

ofregulation.

APPLICATIONS

Reversebatteryprotectionisprovided.

•High-EfficiencyLinearRegulator

Theinternalvoltagereferenceismadeavailablefor

•RegulatorwithUnder-VoltageShutdown

externaluse,providingalow-T.C.referencewithvery

•LowDropoutBattery-PoweredRegulator

goodlineandloadregulation.

•Snap-ON/Snap-OFFRegulator

ConnectionDiagram

Note:Pins1,8,9,16mustbeshortedtogetheroncustomerPCboardapplication

Figure1.16-PinCFPPackage

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Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2010–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Produktspezifikationen