Texas Instruments LP2995 Bruksanvisning

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V

TT

LP2995

PV

IN

V

DDQ

V

REF

AV

IN

V

REF

=

1.25V

+

V

SENSE

GND

50PF

+

+

V

DDQ

=

2.5V

V

DD

=

2.5V

V

TT

=

1.25V

220PF

0.1PF

LP2995

www.ti.com

SNVS190M–FEBRUARY2002–REVISEDMARCH2013

LP2995DDRTerminationRegulator

CheckforSamples:LP2995

1

FEATURES

DESCRIPTION

TheLP2995linearregulatorisdesignedtomeetthe

2

•LowOutputVoltageOffset

JEDECSSTL-2andSSTL-3specificationsfor

•Workswith+5v,+3.3vand2.5vRails

terminationofDDR-SDRAM.Thedevicecontainsa

•SourceandSinkCurrent

high-speedoperationalamplifiertoprovideexcellent

responsetoloadtransients.Theoutputstage

•LowExternalComponentCount

preventsshootthroughwhiledelivering1.5A

•NoExternalResistorsRequired

continuouscurrentandtransientpeaksupto3Ain

•LinearTopology

theapplicationasrequiredforDDR-SDRAM

termination.TheLP2995alsoincorporatesaV

SENSE

•AvailableinSOIC-8,SOPowerPAD-8or

pintoprovidesuperiorloadregulationandaV

REF

WQFN-16Packages

outputasareferenceforthechipsetandDDR

•LowCostandEasytoUse

DIMMS.

WHITESPACE

APPLICATIONS

WHITESPACE

•DDRTerminationVoltage

•SSTL-2

WHITESPACE

•SSTL-3

WHITESPACE

TypicalApplicationCircuit

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2002–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Produktspecifikationer