ZTL431中文资料

Issue8-April20071©ZetexSemiconductorsplc2007ZTL431,ZTL432CosteffectiveadjustableprecisionshuntregulatorDescriptionTheZTL431andZTL432arethreeterminaladjustableshuntregulatorsofferingexcellenttemperaturestabilityandoutputcurrenthandlingcapabilityupto100mA.Theoutputvoltagemaybesettoanychosenvoltagebetween2.5and20voltsbyselectionoftwoexternaldividerresistors.Thedevicescanbeusedasareplacementforzenerdiodesinmanyapplicationsrequiringanimprovementinzenerperformance.Features•Temperaturerange................-40to125°C�Referencevoltagetoleranceat25°C�0.5%.....................................Bgrade�1%.........................................Agrade�Lowoutputnoise�0.2typicaloutputimpedance�Sinkcurrentcapability......1mAto100mA�Adjustableoutputvoltage......VREFto20VPinconnectionsTheZTL432hasthesameelectricalspecificationsastheZTL431buthasadifferentpinoutinSOT23(F-suffix)andSOT23F(FF-suffix).Bothvariantsareavailablein2gradeswithinitialtolerancesof1%and0.5%fortheAandBgradesrespectively.ThesearefunctionallyequivalenttotheTL431/TL432exceptformaximumoperationvoltage,andhaveanambienttemperaturerangeof-40to125°Casstandard.Applications�Opto-couplerlinearization�Linearregulators�Improvedzener�Variablereference1CathodeZTL431_FSOT23ZTL431_FFSOT23F(topview)ZTL432_FSOT23ZTL432_FFSOT23F(topview)RefRefCathode23AnodeAnode123123654ZTL431_H6SC70-6(topview)Cathode*REFAnode*NCPreviewZTL431,ZTL432Issue8-April20072©ZetexSemiconductorsplc2007OrderinginformationAbsolutemaximumratingsCathodevoltage(VKA)..............................................................20VContinuouscathodecurrent(IKA)........................................150mAReferenceinputcurrentrange(IREF).....................-50µAto10mAOperatingjunctiontemperature.................................-40to150°CStoragetemperature...................................................-55to150°COperationabovetheabsolutemaximumratingmaycausedevicefailure.Operationattheabsolutemaximumratings,forextendedperiods,mayreducedevicereliability.UnlessotherwisestatedvoltagesspecifiedarerelativetotheANODEpin.PackagethermaldataTol.OrdercodePackPartmarkStatus*ReelSizeTapewidth(mm)Quantityperreel1%ZTL431ACSTZTO92ZTL431AActiveConcertinaN/A1500ZTL431AE5TASOT23-531APreview*7”,180mm83000ZTL431AFFTASOT23F31AActive7”,180mm83000ZTL431AFTASOT2331AActive7”,180mm83000ZTL431AH6TASC70-631APreview*7”,180mm83000ZTL431AZTASOT8931APreview*7”,180mm121000ZTL432AFFTASOT23F32AActive7”,180mm83000ZTL432AFTASOT2332AActive7”,180mm830000.5%ZTL431BCSTZTO92ZTL431BPreview*ConcertinaN/A1500ZTL431BE5TASOT23-531BPreview*7”,180mm83000ZTL431BFFTASOT23F31BPreview*7”,180mm83000ZTL431BFTASOT2331BActive7”,180mm83000ZTL431BH6TASC70-631BPreview*7”,180mm83000ZTL431BZTASOT8931BPreview*7”,180mm121000ZTL432BFFTASOT23F32BActive7”,180mm83000ZTL432BFTASOT2332BActive7”,180mm83000NOTES:*Foravailabilityofpre-productionstatusdevicescontactyourlocalZetexrepresentativePackageJAPDISTA=25°C,TJ=150°CTO92160°C/W780mWSOT23380°C/W330mWSOT23F138°C/W900mWSOT23-5250°C/W500mWSOT89125°C/W1000mWZTL431,ZTL432Issue8-April20073©ZetexSemiconductorsplc2007RecommendedoperatingconditionsElectricalcharacteristicsElectricalcharacteristicsoverrecommendedoperatingconditions,TA=25°C,unlessotherwisestated.MinMaxUnitsVKACathodevoltageVref20VIKACathodecurrent1100mATAOperatingambienttemperaturerange-40125°CSymbolParameterConditionsMin.Typ.Max.UnitsVREFReferencevoltageVKA=VREFIKA=10mAZTL43_A2.4752.52.525VZTL43_B2.4872.52.513VDEVDeviationofreferencevoltageoverfulltemperaturerangeVKA=VREFIKA=10mATA=0to70°616mVTA=-40to85°C1434TA=-40to125°C1434ΔVREFΔVKARatioofchangeinreferencevoltagetothechangeincathodevoltageIKA=10mAVKA=VREFto10-1.4-2.7mV/VVKA=10Vto20V-1.0-2.0IREFReferenceinputcurrentIKA=10mA,R1=10kR2=OC24µAΔIREFIREFdeviationoverfulltemperaturerangeIKA=10mAR1=10kR2=OCTA=0to70°C0.81.2µATA=-40to85°C0.82.5TA=-40to125°C0.82.5IKA(MIN)MinimumcathodecurrentforregulationVKA=VREF0.40.6mAIKA(OFF)OffstatecurrentVKA=20V,VREF=0V0.10.5µARZDynamicoutputimpedanceVKA=VREF,f=0Hz0.20.5ZTL431,ZTL432Issue8-April20074©ZetexSemiconductorsplc2007TypicalcharacteristicsIKA=10mAVREF=VKA125ZTL431,ZTL432Issue8-April20075©ZetexSemiconductorsplc2007TypicalcharacteristicsIKAIKAIKAVKAVKAVREFVKA20,IKA=10mA,TA=25°CVKAVKAZTL431,ZTL432Issue8-April20076©ZetexSemiconductorsplc2007ApplicationcicuitsVON~2VVOFF=V+VTH=2.5VOutputV+InputR1R2VOUTVOUTV+VREFVREFR1R2VOUTVOUTV+VREFVREFR1R2VOUTVOUTV+VREFVREFVOUT(MIN)=VREF+VREGInOutCommonZSR***0.01F30R1R2VREFV+VOUTVOUTVREFR1R1R2bR2aVREFVREFVREFVREFV+OutputShuntregulatorOutputcontrolofathreeterminalfixedregulatorSinglesupplycomparatorwithtemperaturecompensatedthresholdHighercurrentshuntregulatorSeriesregulatorOvervoltage/undervoltageprotectioncircuitZTL431,ZTL432Issue8-April20077©ZetexSemiconductorsplc2007DCtestcircuitsNotesDeviationofreferenceinputvoltage,Vdev,isdefinedasthemaximumvariationofthereferenceinputvoltageoverthefulltemperaturerange.Theaveragetemperaturecoefficientofthereferenceinpu