Texas Instruments LP2989LV Handleiding
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LP2989LV
SNVS086K–MAY2000–REVISEDJULY2015
LP2989LVMicropowerandLow-Noise,500-mAUltraLow-DropoutRegulatorforUseWith
CeramicOutputCapacitors
1Features3Description
TheLP2989LVisafixed-output500-mAprecision
1
•2.1-Vto16-VInputVoltageRange
LDOregulatordesignedforusewithceramicoutput
•Ultra-LowDropoutVoltage
capacitors.
•500-mAContinuousOutputCurrent
Outputnoisecanbereducedto18μV(typical)by
•VeryLowOutputNoiseWithExternalCapacitor
connectinganexternal10-nFcapacitortothebypass
•<0.8-µAQuiescentCurrentWhenShutDown
pin.
•LowGroundPinCurrentatAllLoads
UsinganoptimizedVerticallyIntegratedPNP(VIP)
•0.75%OutputVoltageAccuracy(AGrade)
process,theLP2989LVdeliverssuperior
performance:
•HighPeakCurrentCapability(800-mAtypical)
•OvertemperatureandOvercurrentProtection
GroundPinCurrent:Typically3mAat500-mAload,
and110µAat100-µAload.
•−40°Cto+125°CJunctionTemperatureRange
SleepMode:TheLP2989LVdrawslessthan0.8-µA
2Applications
quiescentcurrentwhenSHUTDOWNpinispulled
low.
•NotebooksandDesktopPCs
ERRORFlag:Thebuilt-inERRORflaggoeslow
•PDAsandPalmtopComputers
whentheoutputdropsapproximately5%below
•WirelessCommunicationPins
nominal.
•SMPSPost-Regulators
PrecisionOutput:Outputvoltageaccuracyis0.75%
(Agrade)and1.25%(standardgrade)atroom
temperature.
Foroutputvoltagesgreaterthanorequalto2V,see
theLP2989(SNVS083)datasheet.
DeviceInformation
(1)
PARTNUMBERPACKAGEBODYSIZE(NOM)
WSON(8)4.00mmx4.00mm
LP2989LV
SOIC(8)4.90mmx3.91mm
(1)Forallavailablepackages,seetheorderableaddendumat
theendofthedatasheet.
TypicalApplication
*Capacitancevaluesshownareminimumrequiredtoassurestability,butmaybeincreasedwithoutlimit.Larger
outputcapacitorprovidesimproveddynamicresponse.SeetheOutputCapacitorsection.
**Shutdownmustbeactivelyterminated(seetheShutdownInputOperationsection).TietoIN(pin4)ifnotuse.
1
AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,
intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | LP2989LV |
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