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OUT

IN

GND

LP38511

V

IN

V

OUT

EN

V

EN

10 k:

ERROR

V

ERROR

C

IN

10 PF

Ceramic

C

OUT

10 PF

Ceramic

GND

GND

ON

OFF

LP38511

www.ti.com

SNOSAU6E–NOVEMBER2007–REVISEDAPRIL2013

LP38511-1.8800mAFast-TransientResponseLow-DropoutLinearVoltageRegulatorwith

ErrorFlag

CheckforSamples:LP38511

1

FEATURES

DESCRIPTION

TheLP38511-1.8Fast-TransientResponseLow-

2

•2.25Vto5.5VInputVoltageRange

DropoutVoltageRegulatoroffersthehighest-

•1.8VFixedOutputVoltage

performanceinmeetingACandDCaccuracy

•800mAOutputLoadCurrent

requirementsforpoweringDigitalCores.The

LP38511-1.8usesaproprietarycontrolloopthat

•+/-2.5%V

OUT

AccuracyoverLine,Load,and

enablesextremelyfastresponsetochangeinline

Full-TemperatureRangefrom-40°Cto+125°C

conditionsandloaddemands.OutputVoltageDC

•Stablewithtiny10µFCeramicCapacitors

accuracyisspecifiedat±2.5%overline,loadandfull

•0.20%OutputVoltageLoadRegulationfrom10

temperaturerangefrom-40°Cto+125°C.The

mAto800mA

LP38511-1.8isdesignedforinputsfromthe2.5V,

3.3V,and5.0Vrail,isstablewith10uFceramic

•Enablepin

capacitors,andhasafixed1.8Voutput.AnErrorFlag

•ErrorFlagIndicatesStatusofOutputVoltage

featuremonitorstheoutputvoltageandnotifiesthe

•1µAofQuiescentCurrentinShutdown

systemprocessorwhentheoutputvoltagefallsmore

than15%belowthenominalvalue.TheLP38511-1.8

•40dBofPSRRat100kHz

providesexcellenttransientperformancetomeetthe

•Over-TemperatureandOver-Current

demandofhighperformancedigitalcoreASICs,

Protection

DSPs,andFPGAsfoundinhighly-intensive

•DDPAK/TO-263andPFMSurfaceMount

applicationssuchasservers,routers/switches,and

basestations.

Packages

APPLICATIONS

•DigitalCoreASICs,FPGAs,andDSPs

•Servers

•RoutersandSwitches

•BaseStations

•StorageAreaNetworks

•DDR2Memory

TypicalApplicationCircuit

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2007–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Produktspecifikationer