Texas Instruments LP2997 Handleiding
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V
TT
LP2997
PV
IN
V
DDQ
V
REF
AV
IN
V
REF
=
0.9V
V
SENSE
GND
+
+
+
AV
IN
= 2.5V
V
TT
=0.9V
SD
SD
V
DDQ
= 1.8V
C
IN
C
OUT
C
REF
LP2997
www.ti.com
SNVS295F–MAY2004–REVISEDAPRIL2013
LP2997DDR-IITerminationRegulator
CheckforSamples:LP2997
1
FEATURES
DESCRIPTION
TheLP2997linearregulatorisdesignedtomeetthe
2
•SourceandSinkCurrent
JEDECSSTL-18specificationsforterminationof
•LowOutputVoltageOffset
DDR-IImemory.Thedevicecontainsahigh-speed
•NoExternalResistorsRequired
operationalamplifiertoprovideexcellentresponseto
loadtransients.Theoutputstagepreventsshoot
•LinearTopology
throughwhiledelivering500mAcontinuouscurrent
•SuspendtoRam(STR)Functionality
andtransientpeaksupto900mAintheapplicationas
•LowExternalComponentCount
requiredforDDR-IISDRAMtermination.TheLP2997
alsoincorporatesaV
SENSE
pintoprovidesuperior
•ThermalShutdown
loadregulationandaV
REF
outputasareferencefor
•AvailableinSOIC-8,SOPowerPAD-8Packages
thechipsetandDIMMs.
AnadditionalfeaturefoundontheLP2997isan
APPLICATIONS
activelowshutdown(SD)pinthatprovidesSuspend
•DDR-IITerminationVoltage
ToRAM(STR)functionality.WhenSDispulledlow
•SSTL-18Termination
theV
TT
outputwilltri-stateprovidingahigh
impedanceoutput,but,V
REF
willremainactive.A
powersavingsadvantagecanbeobtainedinthis
modethroughlowerquiescentcurrent.
TypicalApplicationCircuit
Figure1.TypicalApplicationCircuit
1
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof
TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
2Alltrademarksarethepropertyoftheirrespectiveowners.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2004–2013,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | LP2997 |
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