Texas Instruments LM431 Handleiding

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LM431

SNVS020H–MAY2000–REVISEDJANUARY2016

LM431AdjustablePrecisionZenerShuntRegulator

1Features3Description

TheLM431isa3-terminaladjustableshuntregulator

1

•AverageTemperatureCoefficient50ppm/°C

withensuredtemperaturestabilityovertheentire

•TemperatureCompensatedforOperationOver

temperaturerangeofoperation.Theoutputvoltage

theFullTemperatureRange

maybesetatanylevelgreaterthan2.5V(V

REF

)up

•ProgrammableOutputVoltage

to36Vmerelybyselectingtwoexternalresistorsthat

actasavoltagedividednetwork.Duetothesharp

•FastTurnonResponse

turnoncharacteristicsthisdeviceisanexcellent

•Low-OutputNoise

replacementformanyZenerdiodeapplications.

•Low-DynamicOutputImpedance

TheLM431isavailableinspace-savingSOIC-8,

•AvailableinSpace-SavingSOIC-8,SOT-23,and

SOT-23,andTO-92packages.

TO-92Packages

DeviceInformation

(1)

2Applications

PARTNUMBERPACKAGEBODYSIZE(NOM)

•AdjustableVoltageorCurrentLinearand

SOIC(8)4.90mm×3.91mm

SwitchingPowerSupplies

LM431SOT-23(3)2.92mm×1.30mm

•VoltageMonitoring

TO-92(3)4.30mm×4.30mm

•CurrentSourceandSinkCircuits

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

•CircuitsRequiringPrecisionReferences

•ZenerDiodeReplacements

LM431SymbolFunctionalBlockDiagram

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Product specificaties