Texas Instruments LP3879 Bruksanvisning

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LP3879

www.ti.com

SNVS396B–MAY2006–REVISEDAPRIL2013

LP3879Micropower800mALowNoise"CeramicStable"VoltageRegulatorforLow

VoltageApplications

CheckforSamples:LP3879

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FEATURES

DESCRIPTION

TheLP3879isa800mAfixed-outputvoltage

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•StandardOutputVoltage:1.00V,1.20V

regulatordesignedtoprovidehighperformanceand

•CustomVoltagesAvailablefrom1.0Vto1.2V

lownoiseinapplicationsrequiringoutputvoltages

(50mVIncrements)

between1.0Vand1.2V.

•InputVoltage:2.5to6V

UsinganoptimizedVIP(VerticallyIntegratedPNP)

•1%InitialOutputAccuracy

process,theLP3879deliverssuperiorperformance:

•DesignedforUsewithLowESRCeramic

GroundPinCurrent:Typically5.5mA@800mA

Capacitors

load,and200µA@100µAload.

•VeryLowOutputNoise

LowPowerShutdown:TheLP3879drawslessthan

•SenseOptionImprovesLoadRegulation

10μAquiescentcurrentwhenshutdownpinispulled

•8-LeadSOPowerPadandWSONSurface

low.

MountPackages

PrecisionOutput:Ensuredoutputvoltageaccuracy

•<10μAQuiescentCurrentinShutdown

is1%atroomtemperature.

•LowGroundPinCurrentatallLoads

LowNoise:Broadbandoutputnoiseisonly18μV

•HighPeakCurrentCapability

(typical)with10nFbypasscapacitor.

•Over-Temperature/Over-CurrentProtection

•-40°Cto+125°CJunctionTemperatureRange

APPLICATIONS

•ASICPowerSuppliesIn:

–Desktops,NotebooksandGraphicCards

–SetTopBoxes,PrintersandCopiers

•DSPandFPGAPowerSupplies

•SMPSPost-Regulator

•MedicalInstrumentation

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Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2006–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Produktspecifikationer