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TS431/431A/431BAdjustablePrecisionShuntRegulatorSinkCurrentCapabilityupto100mAGeneralDescriptionTheTS431/431A/431Bintegratedcircuitsarethree-terminalprogrammableshuntregulatordiodes.ThesemonolithicICvoltagereferencesoperateasalowtemperaturecoefficientzenerwhichisprogrammablefromVrefto36voltswithtwoexternalresistors.Thesedevicesexhibitawideoperatingcurrentrangeof1.0to100mAwithatypicaldynamicimpedanceof0.22Ω.Thecharacteristicsofthesereferencesmakethemexcellentreplacementsforzenerdiodesinmanyapplicationssuchasdigitalvoltmeters,powersupplies,andopampcircuitry.The2.5voltreferencemakesitconvenienttoobtainastablereferencefrom5.0voltlogicsupplies,andsinceTheTS431/431A/431Boperatesasashuntregulator,itcanbeusedaseitherapositiveornegativestagereference.Thisseriesisofferedin3-pinTO-92,SOT-89,SOT-23andSOP-8package.FeaturesStandardApplicationPrecisionReferenceVoltageTS4312.495V±2%TS431A2.495V±1%TS431B2.495V±0.5%EquivalentFullRangeTemp.Coefficient:50ppm/oCProgrammableOutputVoltageupto36VFastTurn-OnResponseSinkCurrentCapabilityof1.0to100mALowDynamicOutputImpedance:0.22ΩLowOutputNoiseOrderingInformationBlockDiagramPartNo.OperatingTemp.Package(Ambient)TS431xCTTO-92TS431xCY-20~+85oCSOT-89TS431xCXSOT-23TS431xCSSOP-8Note:Wherexdenotesvoltagetolerance.Blank:±2%A:±1%B:±0.5%PinAssignmentPinNo.PinTS431/A/BCTTS431/A/BCYTS431/A/BCXTS431/A/BCSDescription1118Reference2232,3,6,7Anode3321Cathode4,5NonconnectTS431/A/B1-82003/12rev.BAbsoluteMaximumRatingCathodeVoltage(Note1)Vka37VContinuousCathodeCurrentRangeIk-100~+150mAReferenceInputCurrentRangeIref-0.05~+10mAPowerDissipation(Note2,3)TO-920.625SOT-89/SOP-8Pd0.5WSOT-230.3OperatingJunctionTemperatureRangeTj+125oCoStorageTemperatureRangeTSTG-65~+150CNote1:Voltagevaluesarewithrespecttotheanodeterminalunlessotherwisenoted.Note2:TjMax=150oCNote3:Ratingapplytoambienttemperatureat25oCRecommendOperatingConditionCathodeVoltageRangeVkaRef~36VCathodeCurrentRange(forregulation)Ik1
