Texas Instruments LMV431B Handleiding

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LMV431

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LMV431A

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LMV431B

SNVS041G–MAY2004–REVISEDSEPTEMBER2014

LMV431xLow-Voltage(1.24-V)AdjustablePrecisionShuntRegulators

1Features3Description

TheLMV431,LMV431AandLMV431Bareprecision

1

•Low-VoltageOperation/WideAdjustRange

1.24Vshuntregulatorscapableofadjustmentto30

(1.24V/30V)

V.Negativefeedbackfromthecathodetotheadjust

•0.5%InitialTolerance(LMV431B)

pincontrolsthecathodevoltage,muchlikeanon-

•TemperatureCompensatedforIndustrial

invertingopampconfiguration(RefertoSymboland

FunctionalDiagrams).Atwo-resistorvoltagedivider

TemperatureRange(39PPM/°Cforthe

terminatedattheadjustpincontrolsthegainofa

LMV431AI)

1.24Vband-gapreference.Shortingthecathodeto

•LowOperationCurrent(55µA)

theadjustpin(voltagefollower)providesacathode

•LowOutputImpedance(0.25Ω)

voltageofa1.24V.

•FastTurn-OnResponse

TheLMV431,LMV431AandLMV431Bhave

•LowCost

respectiveinitialtolerancesof1.5%,1%,and0.5%,

andfunctionallylendthemselvestoseveral

2Applications

applicationsthatrequirezenerdiodetype

performanceatlowvoltages.Applicationsincludea3

•ShuntRegulator

Vto2.7Vlowdrop-outregulator,anerroramplifierin

•SeriesRegulator

a3Voff-lineswitchingregulatorandevenasa

•CurrentSourceorSink

voltagedetector.Thesepartsaretypicallystablewith

capacitiveloadsgreaterthan10nFandlessthan50

•VoltageMonitor

pF.

•ErrorAmplifier

TheLMV431,LMV431AandLMV431Bprovide

•3-VOff-LineSwitchingRegulator

performanceatacompetitiveprice.

•LowDropoutN-ChannelSeriesRegulator

DeviceInformation

(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

LMV431SOT-23(5)2.90mmx1.60mm

LMV431TO-92(3)4.30mmx4.30mm

LMV431SOT-23(3)2.92mmx1.30mm

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

4SymbolandFunctionalDiagrams

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Product specificaties