Texas Instruments LP4951C Handleiding
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LP4950C-5V,LP4951C
www.ti.com
SNVS208C–SEPTEMBER2002–REVISEDAPRIL2013
LP4950C-5VandLP4951CAdjustableMicropowerVoltageRegulators
CheckforSamples:LP4950C-5V,LP4951C
1
FEATURES
DESCRIPTION
TheLP4950CandLP4951Caremicropowervoltage
2
•HighAccuracy5VSpecified100mAOutput
regulatorswithverylowquiescentcurrent(75μAtyp.)
•ExtremelyLowQuiescentCurrent
andverylowdropoutvoltage(typ.40mVatlightloads
•LowDropoutVoltage
and380mVat100mA).Theyareideallysuitedfor
useinbattery-poweredsystems.Furthermore,the
•ExtremelyTightLoadandLineRegulation
quiescentcurrentoftheLP4950C/LP4951C
•VeryLowTemperatureCoefficient
increasesonlyslightlyindropout,prolongingbattery
•UseasRegulatororReference
life.
•NeedsOnly1μFforStability
TheLP4950Cinthepopular3-pinTO-92packageis
•CurrentandThermalLimiting
pincompatiblewitholder5Vregulators.The8-lead
.
LP4951Cisavailableinaplasticsurfacemount
packageandoffersadditionalsystemfunctions.
LP4951CVERSIONSONLY
Onesuchfeatureisanerrorflagoutputwhichwarns
ofalowoutputvoltage,oftenduetofallingbatteries
•ErrorFlagWarnsofOutputDropout
ontheinput.Itmaybeusedforapower-onreset.A
•Logic-controlledElectronicShutdown
secondfeatureisthelogic-compatibleshutdowninput
•OutputPogrammableFrom1.24to29V
whichenablestheregulatortobeswitchedonand
off.Also,thepartmaybepin-strappedfora5V
outputorprogrammedfrom1.24Vto29Vwithan
externalpairofresistors.
CarefuldesignoftheLP4950C/LP4951Chas
minimizedallcontributionstotheerrorbudget.This
includesatightinitialtolerance(.5%typ.),extremely
goodloadandlineregulation(.05%typ.)andavery
lowoutputvoltagetemperaturecoefficient,making
thepartusefulasalow-powervoltagereference.
BLOCKDIAGRAMANDTYPICALAPPLICATIONS
LP4950CLP4951C
Figure1.
Figure2.
1
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof
TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
2Alltrademarksarethepropertyoftheirrespectiveowners.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2002–2013,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | LP4951C |
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