TL4051 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLOS487–JUNE2007 FEATURES APPLICATIONS • 1.225-VFixedandAdjustable(1.225-Vto10-V) • Data-AcquisitionSystems Outputs • PowerSuppliesandPower-SupplyMonitors • TightOutputTolerancesandLow • InstrumentationandTestEquipment TemperatureCoefficient • ProcessControl – Max0.1%,50ppm/(cid:176) C–AGrade • PrecisionAudio – Max0.2%,50ppm/(cid:176) C–BGrade • AutomotiveElectronics – Max0.5%,50ppm/(cid:176) C–CGrade • EnergyManagement/Metering • LowOutputNoise…20m V (Typ) • Battery-PoweredEquipment RMS • WideOperatingCurrentRange… 60m A(Typ)to12mA • StableWithAllCapacitiveLoads;NoOutput CapacitorRequired • Availablein – IndustrialTemperature:–40(cid:176) Cto85(cid:176) C – ExtendedTemperature:–40(cid:176) Cto125(cid:176) C 1.2 V...DBZ (SOT-23-3) PACKAGE 1.2 V...DCK (SC-70) PACKAGE (TOPVIEW) (TOPVIEW) 1 1 ANODE 5 NC CATHODE 3 * * 2 ANODE 2 3 CATHODE 4 NC NC – No internal connection * Pin 3 is attached to Substrate and must be connected to ANODE or left open. * Pin 2 is attached to Substrate and must be connected to ANODE or left open. Adjustable...DBZ (SOT-23-3) PACKAGE Adjustable...DCK (SC-70) PACKAGE (TOPVIEW) (TOPVIEW) 1 NC 1 5 FB FB 3 ANODE ANODE 2 CATHODE 2 3 CATHODE 4 NC NC – No internal connection DESCRIPTION/ORDERING INFORMATION The TL4051 series of shunt voltage references are versatile easy-to-use references suitable for a wide array of applications. The device is available in a fixed 1.225-V output or an adjustable output whose voltage is determined by an external resistor divider. The device requires no external capacitors for operation and is stable with all capacitive loads. Additionally, the reference offers low dynamic impedance, low noise, and low temperature coefficient to ensure a stable output voltage over a wide range of operating currents and temperatures. The TL4051 is offered in three initial tolerances, ranging from 0.1% (max) for the A grade to 0.5% (max) for the C grade. Thus, a great deal of flexibility is offered to designers in choosing the best cost-to-performance ratio for their applications. Packaged in the space-saving SOT-23-3 and SC-70 packages and requiring a minimum currentof45m A(typ),theTL4051alsoisidealforportableapplications. The TL4051xI is characterized for operation over an ambient temperature range of –40(cid:176) C to 85(cid:176) C. The TL4051xQischaracterizedforoperationoveranambienttemperaturerangeof–40(cid:176) Cto125(cid:176) C. Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet. PRODUCTIONDATAinformationiscurrentasofpublicationdate. Copyright©2007,TexasInstrumentsIncorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarilyincludetestingofallparameters.

TL4051 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLOS487–JUNE2007 ORDERINGINFORMATION(1) ORDERABLE TOP-SIDE T DEVICEGRADE V PACKAGE(2) A Z PARTNUMBER MARKING(3) Reelof3000 TL4051AIDBZR SOT-23-3–DBZ TN2_ Reelof250 TL4051AIDBZT Agrade: ADJ 0.1%initial Reelof3000 TL4051AIDCKR SC-70–DCK 97_ accuracy Reelof250 TL4051AIDCKT and 50ppm/(cid:176) C Reelof3000 TL4051A12IDBZR SOT-23-3–DBZ TN8_ temperature Reelof250 TL4051A12IDBZT coefficient 1.2V Reelof3000 TL4051A12IDCKR SC-70–DCK 9D_ Reelof250 TL4051A12IDCKT Reelof3000 TL4051BIDBZR SOT-23-3–DBZ TN3_ Reelof250 TL4051BIDBZT Bgrade: ADJ 0.2%initial Reelof3000 TL4051BIDCKR SC-70–DCK 98_ accuracy Reelof250 TL4051BIDCKT –40(cid:176) Cto85(cid:176) C and 50ppm/(cid:176) C Reelof3000 TL4051B12IDBZR SOT-23-3–DBZ TN9_ temperature Reelof250 TL4051B12IDBZT coefficient 1.2V Reelof3000 TL4051B12IDCKR SC-70–DCK 9E_ Reelof250 TL4051B12IDCKT Reelof3000 TL4051CIDBZR SOT-23-3–DBZ TN4_ Reelof250 TL4051CIDBZT Cgrade: ADJ 0.5%initial Reelof3000 TL4051CIDCKR SC-70–DCK 99_ accuracy Reelof250 TL4051CIDCKT and 50ppm/(cid:176) C Reelof3000 TL4051C12IDBZR SOT-23-3–DBZ TNU_ temperature Reelof250 TL4051C12IDBZT coefficient 1.2V Reelof3000 TL4051C12IDCKR SC-70–DCK 9F_ Reelof250 TL4051C12IDCKT (1) Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumattheendofthisdocument,orseetheTI websiteatwww.ti.com. (2) Packagedrawings,standardpackingquantities,thermaldata,symbolization,andPCBdesignguidelinesareavailableat www.ti.com/sc/package. (3) Theactualtop-sidemarkinghasoneadditionalcharacterthatdesignatestheassembly/testsite. 2 SubmitDocumentationFeedback

TL4051 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLOS487–JUNE2007 ORDERINGINFORMATION(1) ORDERABLE TOP-SIDE T DEVICEGRADE V PACKAGE(2) A Z PARTNUMBER MARKING(3) Reelof3000 TL4051AQDBZR SOT-23-3–DBZ TN5_ Reelof250 TL4051AQDBZT Agrade: ADJ 0.1%initial Reelof3000 TL4051AQDCKR SC-70–DCK 9A_ accuracy Reelof250 TL4051AQDCKT and 50ppm/(cid:176) C Reelof3000 TL4051A12QDBZR SOT-23-3–DBZ TNV_ temperature Reelof250 TL4051A12QDBZT coefficient 1.2V Reelof3000 TL4051A12QDCKR SC-70–DCK 9G_ Reelof250 TL4051A12QDCKT Reelof3000 TL4051BQDBZR SOT-23-3–DBZ TN6_ Reelof250 TL4051BQDBZT Bgrade: ADJ 0.2%initial Reelof3000 TL4051BQDCKR SC-70–DCK 9B_ accuracy Reelof250 TL4051BQDCKT –40(cid:176) Cto125(cid:176) C and 50ppm/(cid:176) C Reelof3000 TL4051B12QDBZR SOT-23-3–DBZ TNW_ temperature Reelof250 TL4051B12QDBZT coefficient 1.2V Reelof3000 TL4051B12QDCKR SC-70–DCK 9H_ Reelof250 TL4051B12QDCKT Reelof3000 TL4051CQDBZR SOT-23-3–DBZ TN7_ Reelof250 TL4051CQDBZT Cgrade: ADJ 0.5%initial Reelof3000 TL4051CQDCKR SC-70–DCK 9C_ accuracy Reelof250 TL4051CQDCKT and 50ppm/(cid:176) C Reelof3000 TL4051C12QDBZR SOT-23-3–DBZ TNY_ temperature Reelof250 TL4051C12QDBZT coefficient 1.2V Reelof3000 TL4051C12QDCKR SC-70–DCK 9J_ Reelof250 TL4051C12QDCKT (1) Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumattheendofthisdocument,orseetheTI websiteatwww.ti.com. (2) Packagedrawings,standardpackingquantities,thermaldata,symbolization,andPCBdesignguidelinesareavailableat www.ti.com/sc/package. (3) Theactualtop-sidemarkinghasoneadditionalcharacterthatdesignatestheassembly/testsite. SubmitDocumentationFeedback 3

TL4051 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLOS487–JUNE2007 FUNCTIONALBLOCKDIAGRAM CATHODE + _ V REF (see NoteA) See Note B FB (see NoteA) See Note B ANODE A. TL4051x(Adjustable)only B. TL4051x12only Absolute Maximum Ratings(1) overfree-airtemperaturerange(unlessotherwisenoted) MIN MAX UNIT V Continuouscathodevoltage 15 V Z I Continuouscathodecurrent –10 20 mA Z DBZpackage 206 q Packagethermalimpedance(2)(3) (cid:176) C/W JA DCKpackage 252 T Operatingvirtualjunctiontemperature 150 (cid:176) C J T Storagetemperaturerange –65 150 (cid:176) C stg (1) StressesbeyondthoselistedunderAbsoluteMaximumRatingsmaycausepermanentdamagetothedevice.Thesearestressratings only,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderRecommendedOperating Conditionsisnotimplied.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability. (2) MaximumpowerdissipationisafunctionofT(max),q ,andT .Themaximumallowablepowerdissipationatanyallowableambient J JA A temperatureisP =(T(max)–T )/q .OperatingattheabsolutemaximumT of150(cid:176) Ccanaffectreliability. D J A JA J (3) ThepackagethermalimpedanceiscalculatedinaccordancewithJESD51-7. Recommended Operating Conditions MIN MAX UNIT I Cathodecurrent (1) 12 mA Z V Reversebreakdownvoltage(adjustableversion) 10 V Z Itemperature –40 85 T Free-airtemperature (cid:176) C A Qtemperature –40 125 (1) Seeparametrictables 4 SubmitDocumentationFeedback

TL4051 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLOS487–JUNE2007 TL4051x12I Electrical Characteristics fullrangeT =–40(cid:176) Cto85(cid:176) C(unlessotherwisenoted) A TL4051A12I TL4051B12I TL4051C12I PARAMETER TESTCONDITIONS TA UNIT MIN TYP MAX MIN TYP MAX MIN TYP MAX Reverse VZ breakdown IZ=100m A 25(cid:176)C 1.225 1.225 1.225 V voltage Reverse 25(cid:176)C –1.2 1.2 –2.4 2.4 –6 6 breakdown IZ=100m A Full mV voltagetolerance range –5.2 5.2 –6.4 6.4 –10.1 10.1 25(cid:176)C 39 60 39 60 39 60 IZ,min Mcainthimoduemcurrent Full 65 65 65 m A range Average IZ=10mA 25(cid:176)C – 20 – 20 – 20 temperature IZ=1mA 25(cid:176)C – 15 – 15 – 15 a VZ creoveeffrisceientof 25(cid:176)C – 15 – 15 – 15 ppm/(cid:176)C bvoreltaakgdeown IZ=100m A raFnuglle – 50 – 50 – 50 25(cid:176)C 0.3 1.1 0.3 1.1 0.3 1.1 Reverse IZ,min<IZ<1mA Full DV breakdown range 1.5 1.5 1.5 DIZZ vwoitlhtacgaethcohdaenge 25(cid:176)C 1.8 6 1.8 6 1.8 6 mV currentchange 1mA<IZ<12mA Full 8 8 8 range Reverse IZ=1mA, ZZ dynamic f=120Hz, 25(cid:176)C 0.5 0.5 0.5 W impedance IAC=0.1IZ eN Widebandnoise I1Z0=H1z0£0fm £A,10kHz 25(cid:176)C 20 20 20 m VRMS Long-term stabilityof t=1000h, reverse TA=25(cid:176)C– 0.1(cid:176)C, 25(cid:176)C 120 120 120 ppm breakdown IZ=100m A voltage VHYST Thyhsetremreaslis(1) D TA=–40(cid:176)Cto125(cid:176)C 0.36 0.36 0.36 mV/V (1) ThermalhysteresisisdefinedasVZ,25(cid:176)C(aftercyclingto–40(cid:176) C)–VZ,25(cid:176)C(aftercyclingto125(cid:176) C). SubmitDocumentationFeedback 5

TL4051 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLOS487–JUNE2007 TL4051x12Q Electrical Characteristics fullrangeT =–40(cid:176) Cto125(cid:176) C(unlessotherwisenoted) A TL4051A12Q TL4051B12Q TL4051C12Q PARAMETER TESTCONDITIONS TA UNIT MIN TYP MAX MIN TYP MAX MIN TYP MAX Reverse VZ breakdown IZ=100m A 25(cid:176)C 1.225 1.225 1.225 V voltage Reverse 25(cid:176)C –1.2 1.2 –2.4 2.4 –6 6 breakdown IZ=100m A Full mV voltagetolerance range –7.4 7.4 –8.6 8.6 –12.2 12.2 25(cid:176)C 39 60 39 60 39 60 IZ,min Mcainthimoduemcurrent Full 65 65 65 m A range Average IZ=10mA 25(cid:176)C – 20 – 20 – 20 temperature IZ=1mA 25(cid:176)C – 15 – 15 – 15 a VZ creoveeffrisceientof 25(cid:176)C – 15 – 15 – 15 ppm/(cid:176)C bvoreltaakgdeown IZ=100m A raFnuglle – 50 – 50 – 50 25(cid:176)C 0.3 1.1 0.3 1.1 0.3 1.1 Reverse IZ,min<IZ<1mA Full DV breakdown range 1.5 1.5 1.5 DIZZ vwoitlhtacgaethcohdaenge 25(cid:176)C 1.8 6 1.8 6 1.8 6 mV currentchange 1mA<IZ<12mA Full 8 8 8 range Reverse IZ=1mA, ZZ dynamic f=120Hz, 25(cid:176)C 0.5 0.5 0.5 W impedance IAC=0.1IZ eN Widebandnoise I1Z0=H1z0£0fm £A,10kHz 25(cid:176)C 20 20 20 m VRMS Long-term stabilityof t=1000h, reverse TA=25(cid:176)C– 0.1(cid:176)C, 25(cid:176)C 120 120 120 ppm breakdown IZ=100m A voltage VHYST Thyhsetremreaslis(1) D TA=–40(cid:176)Cto125(cid:176)C 0.36 0.36 0.36 mV/V (1) ThermalhysteresisisdefinedasVZ,25(cid:176)C(aftercyclingto–40(cid:176) C)–VZ,25(cid:176)C(aftercyclingto125(cid:176) C). 6 SubmitDocumentationFeedback

TL4051 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLOS487–JUNE2007 TL4051xI (Adjustable Version) Electrical Characteristics fullrangeT =–40(cid:176) Cto85(cid:176) C(unlessotherwisenoted) A TL4051AI TL4051BI TL4051CI PARAMETER TESTCONDITIONS TA UNIT MIN TYP MAX MIN TYP MAX MIN TYP MAX VREF Rvoelfteargeence IVZZ==1500Vm A, 25(cid:176)C 1.212 1.212 1.212 V Rvtooelleftearargenenccee(1) IVZZ==1500Vm A, r2aF5nu(cid:176)glCle ––15..22 15..22 ––26..44 26..44 –10–.16 10.61 mV 25(cid:176)C 36 60 36 60 36 65 IZ,min Mcainthimoduemcurrent Full 65 65 70 m A range 25(cid:176)C 0.3 1.1 0.3 1.1 0.3 1.1 DDVIRZEF Rvwoeitlhfteacrgeaenthccohedaenge IZ,min<IZ<1mA r2aF5nu(cid:176)glCle 0.6 1.65 0.6 1.65 0.6 1.65 mV currentchange 1mA<IZ<12mA Full 8 8 8 range Reference 25(cid:176)C –1.69 –2.8 –1.69 –2.8 –1.69 –2.8 DV DVRKEAF vwoitlhtaoguetpchuatnge IZ=1mA Full –3.5 –3.5 –3.5 mV/V voltagechange range 25(cid:176)C 70 130 70 130 70 130 Feedback IFB current Full 150 150 150 nA range IZ=10mA, 25(cid:176)C – 20 – 20 – 20 VZ=2.5V Average temperature IZ=1mA, 25(cid:176)C – 15 – 15 – 15 a VREF coefficientof VZ=2.5V ppm/(cid:176)C reference 25(cid:176)C – 15 – 15 – 15 voltage(1) IZ=100m A, VZ=2.5V Full – 50 – 50 – 50 range IZ=1mA, f=120Hz, 25(cid:176)C 0.3 0.3 0.3 IAC=0.1IZ, ZZ Rdyenvaemrsiec VZ=VREF W impedance IZ=1mA, f=120Hz, 25(cid:176)C 2 2 2 IAC=0.1IZ, VZ=10V IZ=100m A, eN Widebandnoise VZ=VREF, 25(cid:176)C 20 20 20 m VRMS 10Hz£ f£ 10kHz Long-term stabilityof t=1000h, reverse TA=25(cid:176)C– 0.1(cid:176)C, 25(cid:176)C 120 120 120 ppm breakdown IZ=100m A voltage VHYST Thyhsetremreaslis(2) D TA=–40(cid:176)Cto125(cid:176)C 0.3 0.3 0.3 mV/V (1) Referencevoltagetoleranceandaveragetemperaturecoefficientchangewithoutputvoltage(V ).SeeTypicalCharacteristics. Z (2) ThermalhysteresisisdefinedasVZ,25(cid:176)C(aftercyclingto–40(cid:176) C)–VZ,25(cid:176)C(aftercyclingto125(cid:176) C). SubmitDocumentationFeedback 7

TL4051 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLOS487–JUNE2007 TL4051xQ (Adjustable Version) Electrical Characteristics fullrangeT =–40(cid:176) Cto125(cid:176) C(unlessotherwisenoted) A TL4051AQ TL4051BQ TL4051CQ PARAMETER TESTCONDITIONS TA UNIT MIN TYP MAX MIN TYP MAX MIN TYP MAX VREF Rvoelfteargeence IVZZ==1500Vm A, 25(cid:176)C 1.212 1.212 1.212 V Rvtooelleftearargenenccee(1) IVZZ==1500Vm A, r2aF5nu(cid:176)glCle ––17..24 17..24 ––28..46 28..46 –12–.26 12.62 mV 25(cid:176)C 36 60 36 60 36 65 IZ,min Mcainthimoduemcurrent Full 70 70 75 m A range 25(cid:176)C 0.3 1.1 0.3 1.1 0.3 1.1 DDVIRZEF Rvwoeitlhfteacrgeaenthccohedaenge IZ,min<IZ<1mA r2aF5nu(cid:176)glCle 0.6 1.65 0.6 1.65 0.6 1.65 mV currentchange 1mA<IZ<12mA Full 8 8 8 range Reference 25(cid:176)C –1.69 –2.8 –1.69 –2.8 –1.69 –2.8 DV DVRKEAF vwoitlhtaoguetpchuatnge IZ=1mA Full –3.5 –3.5 –3.5 mV/V voltagechange range 25(cid:176)C 70 130 70 130 70 130 Feedback IFB current Full 150 150 150 nA range IZ=10mA, 25(cid:176)C – 20 – 20 – 20 VZ=2.5V Average temperature IZ=1mA, 25(cid:176)C – 15 – 15 – 15 a VREF coefficientof VZ=2.5V ppm/(cid:176)C reference 25(cid:176)C – 15 – 15 – 15 voltage(1) IZ=100m A, VZ=2.5V Full – 50 – 50 – 50 range IZ=1mA, f=120Hz, 25(cid:176)C 0.3 0.3 0.3 IAC=0.1IZ, ZZ Rdyenvaemrsiec VZ=VREF W impedance IZ=1mA, f=120Hz, 25(cid:176)C 2 2 2 IAC=0.1IZ, VZ=10V IZ=100m A, eN Widebandnoise VZ=VREF, 25(cid:176)C 20 20 20 m VRMS 10Hz£ f£ 10kHz Long-term stabilityof t=1000h, reverse TA=25(cid:176)C– 0.1(cid:176)C, 25(cid:176)C 120 120 120 ppm breakdown IZ=100m A voltage VHYST Thyhsetremreaslis(2) D TA=–40(cid:176)Cto125(cid:176)C 0.3 0.3 0.3 mV/V (1) Referencevoltagetoleranceandaveragetemperaturecoefficientchangewithoutputvoltage(V ).SeeTypicalCharacteristics. Z (2) ThermalhysteresisisdefinedasVZ,25(cid:176)C(aftercyclingto–40(cid:176) C)–VZ,25(cid:176)C(aftercyclingto125(cid:176) C). 8 SubmitDocumentationFeedback

TL4051 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLOS487–JUNE2007 TYPICAL CHARACTERISTICS OUTPUTIMPEDANCE TEMPERATUREDRIFTFORDIFFERENTAVERAGE vs TEMPERATURECOEFFICIENTS FREQUENCY 0.500 1000 0.400 IREF= 100 µA IREF= 150 µA 0.300 aVREF= 10.4 ppm/°C 100 V = 10V 0.200 aV = 16 ppm/°C W OUT % REF e – 0.100 ce – g 0.000 n 10 n a a d VChREF--00..210000 aVREF= 5.5 ppm/°C Impe 1 VOUVT=OU T2=.5 5VV -0.300 V = 1.23V OUT -0.400 -0.500 0.1 -40 -20 0 20 40 60 80 100 120 100 1k 10k 100k 1M Temperature – °C Frequency – Hz OUTPUTIMPEDANCE NOISEVOLTAGE vs vs FREQUENCY FREQUENCY 1000 1000 I = 1 mA REF 800 z 100 H W ÖV/ – n nce VOUT= 10V e – 600 da 10 V = 5V ois mpe OUT e N 400 g I a 1 olt V = 2.5V V 200 OUT V = 1.23V OUT 0.1 0 100 1k 10k 100k 1M 1 10 100 1k 10k 100k Frequency – Hz Frequency – Hz SubmitDocumentationFeedback 9

TL4051 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLOS487–JUNE2007 TYPICAL CHARACTERISTICS (continued) REVERSECHARACTERISTICS LARGESIGNALPULSERESPONSE 100 14 V V V V V 90 0 2 4 6 8 = = = = = 12 80 VFB VFB VFB VFB VFB A 10 µ 70 – nt 60 8 e r Cur 50 V 6 se 40 e – r g e a 4 ev 30 olt R V 20 2 10 0 0 0 2 4 6 8 10 -2 OutputVoltage –V -5 5 15 25 35 45 Time – µs OUTPUTSATURATION REVERSECURRENT vs vs OUTPUTCURRENT REVERSEVOLTAGE 1.6 100 V =V + 5 mV ADJ REF 1.4 80 T = –40°C T = 25°C 1.2 A A A µ V – on – 1 rent 60 rati TA= 85°C Cur Satu 0.8 TA= 125°C rse 40 T = 125°C ut 0.6 eve A p R T = 25°C ut 20 A O 0.4 T = -40°C A 0.2 0 0.0 0.4 0.8 1.2 1.6 2 ReverseVoltage –V 0 0 2 4 6 8 10 12 Output Current – mA 10 SubmitDocumentationFeedback

TL4051 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLOS487–JUNE2007 TYPICAL CHARACTERISTICS (continued) REFERENCEVOLTAGE REFERENCEVOLTAGE vs vs OUTPUTVOLTAGE TEMPERATURE 1.216 1.22 T = -40°C 1.212 A 1.215 ReferenceVoltage –V 11..22100.482 TA= 8TT5AA°==C 12255°°CC ReferenceVoltage –V 11.2.2015 VOUT= 5VVOUT=VRVEFOUT= 10VVOUT= 2.5V 1.2 1.196 0 2 4 6 8 10 1.195 -40 -20 0 20 40 60 80 100 OutputVoltage –V Temperature – °C FEEDBACKCURRENT vs OUTPUTVOLTAGE 120 100 T = 125°C A A n – 80 TA= 85°C nt e T = 25°C r A r u C 60 T = –40°C k A c a b d 40 e e F 20 0 0 2 4 6 8 10 OutputVoltage –V SubmitDocumentationFeedback 11

TL4051 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLOS487–JUNE2007 APPLICATION INFORMATION R = 30 kW S V IN TL4051x12 V 1-Hz rate Z Figure1.Start-UpCharacteristicsTestCircuit I R (+) TL4051x (Adj) (-) 2V/step V Figure2.ReverseCharacteristicsTestCircuit Output Capacitor The TL4051 does not require an output capacitor across CATHODE and ANODE for stability. However, if an outputbypasscapacitorisdesired,theTL4051isdesignedtobestablewithallcapacitiveloads. SOT-23 Pin Connections There is a parasitic Schottky diode connected between pins 2 and 3 of the SOT-23 packaged device. Thus, pin3oftheSOT-23packagemustbeleftfloatingorconnectedtopin2. 12 SubmitDocumentationFeedback

TL4051 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLOS487–JUNE2007 APPLICATION INFORMATION (continued) Adjustable Version The adjustable version allows V to be set by a user-defined resistor divider. The output voltage, V , is set Z Z accordingtotheequationshowninFigure3. VS R S V =V (1 + R2/R1) + Z REF V R1 REF - TL4051x (Adj) R2 Figure3.AdjustableShuntRegulator Cathode and Load Currents In a typical shunt regulator configuration (see Figure 4), an external resistor, R , is connected between the S supply and the cathode of the TL4051. R must be set properly, as it sets the total current available to supply S the load (I ) and bias the TL4051 (I ). In all cases, I must stay within a specified range for proper operation of L Z Z thereference.Takingintoconsideration one extreme in the variation of the load and supply voltage (maximum I L and minimum V ), R must be small enough to supply the minimum I required for operation of the regulator, as S S Z given by data sheet parameters. At the other extreme, maximum V and minimum I , R must be large enough S L S tolimitI tolessthanitsmaximumrecommendedratingof12mA. Z R iscalculatedasshowninEquation1. S RS(cid:3)(cid:4)V(ISL(cid:1)(cid:2)IVZ)Z(cid:5) (1) V S RS IZ+ IL I L V Z I Z TL4051x12 Figure4.ShuntRegulator SubmitDocumentationFeedback 13

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 PACKAGING INFORMATION Orderable Device Status Package Type Package Pins Package Eco Plan Lead/Ball Finish MSL Peak Temp Op Temp (°C) Device Marking Samples (1) Drawing Qty (2) (6) (3) (4/5) TL4051A12IDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 TN8U & no Sb/Br) TL4051A12IDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 TN8U & no Sb/Br) TL4051A12IDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 TN8U & no Sb/Br) TL4051A12IDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 TN8U & no Sb/Br) TL4051A12QDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 TNVU & no Sb/Br) TL4051A12QDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 TNVU & no Sb/Br) TL4051A12QDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 TNVU & no Sb/Br) TL4051A12QDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 9GU & no Sb/Br) TL4051AIDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 TN2U & no Sb/Br) TL4051AIDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 TN2U & no Sb/Br) TL4051AIDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 TN2U & no Sb/Br) TL4051AIDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 97U & no Sb/Br) TL4051AQDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 TN5U & no Sb/Br) TL4051AQDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 9AU & no Sb/Br) TL4051B12IDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 (TN93, TN9U) & no Sb/Br) TL4051B12IDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 (TN93, TN9U) & no Sb/Br) TL4051B12QDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 (TNW3, TNWU) & no Sb/Br) Addendum-Page 1

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 Orderable Device Status Package Type Package Pins Package Eco Plan Lead/Ball Finish MSL Peak Temp Op Temp (°C) Device Marking Samples (1) Drawing Qty (2) (6) (3) (4/5) TL4051B12QDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 9HU & no Sb/Br) TL4051BIDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 TN3U & no Sb/Br) TL4051BIDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 TN3U & no Sb/Br) TL4051BIDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 98U & no Sb/Br) TL4051BQDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 TN6U & no Sb/Br) TL4051BQDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 9BU & no Sb/Br) TL4051C12IDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 TNUU & no Sb/Br) TL4051C12IDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 TNUU & no Sb/Br) TL4051C12IDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 9FU & no Sb/Br) TL4051C12QDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 TNYU & no Sb/Br) TL4051C12QDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 TNYU & no Sb/Br) TL4051C12QDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 9JU & no Sb/Br) TL4051CIDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 TN4U & no Sb/Br) TL4051CIDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 TN4U & no Sb/Br) TL4051CIDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 99U & no Sb/Br) TL4051CQDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 TN7U & no Sb/Br) TL4051CQDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 125 9CU & no Sb/Br) (1) The marketing status values are defined as follows: Addendum-Page 2

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based flame retardants must also meet the <=1000ppm threshold requirement. (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 3

PACKAGE MATERIALS INFORMATION www.ti.com 2-Feb-2020 TAPE AND REEL INFORMATION *Alldimensionsarenominal Device Package Package Pins SPQ Reel Reel A0 B0 K0 P1 W Pin1 Type Drawing Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant (mm) W1(mm) TL4051A12IDBZR SOT-23 DBZ 3 3000 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL4051A12IDBZT SOT-23 DBZ 3 250 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL4051A12QDBZR SOT-23 DBZ 3 3000 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL4051A12QDBZT SOT-23 DBZ 3 250 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL4051A12QDCKR SC70 DCK 5 3000 179.0 8.4 2.2 2.5 1.2 4.0 8.0 Q3 TL4051AIDBZR SOT-23 DBZ 3 3000 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL4051AIDBZT SOT-23 DBZ 3 250 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL4051AIDCKR SC70 DCK 5 3000 179.0 8.4 2.2 2.5 1.2 4.0 8.0 Q3 TL4051AQDBZR SOT-23 DBZ 3 3000 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL4051AQDCKR SC70 DCK 5 3000 179.0 8.4 2.2 2.5 1.2 4.0 8.0 Q3 TL4051B12IDBZR SOT-23 DBZ 3 3000 178.0 9.2 3.15 2.77 1.22 4.0 8.0 Q3 TL4051B12IDBZR SOT-23 DBZ 3 3000 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL4051B12IDBZT SOT-23 DBZ 3 250 178.0 9.2 3.15 2.77 1.22 4.0 8.0 Q3 TL4051B12IDBZT SOT-23 DBZ 3 250 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL4051B12QDBZR SOT-23 DBZ 3 3000 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL4051B12QDBZR SOT-23 DBZ 3 3000 178.0 9.2 3.15 2.77 1.22 4.0 8.0 Q3 TL4051B12QDCKR SC70 DCK 5 3000 179.0 8.4 2.2 2.5 1.2 4.0 8.0 Q3 TL4051BIDBZR SOT-23 DBZ 3 3000 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 PackMaterials-Page1

PACKAGE MATERIALS INFORMATION www.ti.com 2-Feb-2020 Device Package Package Pins SPQ Reel Reel A0 B0 K0 P1 W Pin1 Type Drawing Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant (mm) W1(mm) TL4051BIDBZT SOT-23 DBZ 3 250 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL4051BIDCKR SC70 DCK 5 3000 179.0 8.4 2.2 2.5 1.2 4.0 8.0 Q3 TL4051BQDBZR SOT-23 DBZ 3 3000 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL4051BQDCKR SC70 DCK 5 3000 179.0 8.4 2.2 2.5 1.2 4.0 8.0 Q3 TL4051C12IDBZR SOT-23 DBZ 3 3000 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL4051C12IDBZT SOT-23 DBZ 3 250 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL4051C12IDCKR SC70 DCK 5 3000 179.0 8.4 2.2 2.5 1.2 4.0 8.0 Q3 TL4051C12QDBZR SOT-23 DBZ 3 3000 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL4051C12QDBZT SOT-23 DBZ 3 250 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL4051C12QDCKR SC70 DCK 5 3000 179.0 8.4 2.2 2.5 1.2 4.0 8.0 Q3 TL4051CIDBZR SOT-23 DBZ 3 3000 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL4051CIDBZT SOT-23 DBZ 3 250 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL4051CIDCKR SC70 DCK 5 3000 179.0 8.4 2.2 2.5 1.2 4.0 8.0 Q3 TL4051CQDBZR SOT-23 DBZ 3 3000 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL4051CQDCKR SC70 DCK 5 3000 179.0 8.4 2.2 2.5 1.2 4.0 8.0 Q3 *Alldimensionsarenominal Device PackageType PackageDrawing Pins SPQ Length(mm) Width(mm) Height(mm) TL4051A12IDBZR SOT-23 DBZ 3 3000 203.0 203.0 35.0 TL4051A12IDBZT SOT-23 DBZ 3 250 203.0 203.0 35.0 PackMaterials-Page2

PACKAGE MATERIALS INFORMATION www.ti.com 2-Feb-2020 Device PackageType PackageDrawing Pins SPQ Length(mm) Width(mm) Height(mm) TL4051A12QDBZR SOT-23 DBZ 3 3000 203.0 203.0 35.0 TL4051A12QDBZT SOT-23 DBZ 3 250 203.0 203.0 35.0 TL4051A12QDCKR SC70 DCK 5 3000 203.0 203.0 35.0 TL4051AIDBZR SOT-23 DBZ 3 3000 203.0 203.0 35.0 TL4051AIDBZT SOT-23 DBZ 3 250 203.0 203.0 35.0 TL4051AIDCKR SC70 DCK 5 3000 203.0 203.0 35.0 TL4051AQDBZR SOT-23 DBZ 3 3000 203.0 203.0 35.0 TL4051AQDCKR SC70 DCK 5 3000 203.0 203.0 35.0 TL4051B12IDBZR SOT-23 DBZ 3 3000 180.0 180.0 18.0 TL4051B12IDBZR SOT-23 DBZ 3 3000 203.0 203.0 35.0 TL4051B12IDBZT SOT-23 DBZ 3 250 180.0 180.0 18.0 TL4051B12IDBZT SOT-23 DBZ 3 250 203.0 203.0 35.0 TL4051B12QDBZR SOT-23 DBZ 3 3000 203.0 203.0 35.0 TL4051B12QDBZR SOT-23 DBZ 3 3000 180.0 180.0 18.0 TL4051B12QDCKR SC70 DCK 5 3000 203.0 203.0 35.0 TL4051BIDBZR SOT-23 DBZ 3 3000 203.0 203.0 35.0 TL4051BIDBZT SOT-23 DBZ 3 250 203.0 203.0 35.0 TL4051BIDCKR SC70 DCK 5 3000 203.0 203.0 35.0 TL4051BQDBZR SOT-23 DBZ 3 3000 203.0 203.0 35.0 TL4051BQDCKR SC70 DCK 5 3000 203.0 203.0 35.0 TL4051C12IDBZR SOT-23 DBZ 3 3000 203.0 203.0 35.0 TL4051C12IDBZT SOT-23 DBZ 3 250 203.0 203.0 35.0 TL4051C12IDCKR SC70 DCK 5 3000 203.0 203.0 35.0 TL4051C12QDBZR SOT-23 DBZ 3 3000 203.0 203.0 35.0 TL4051C12QDBZT SOT-23 DBZ 3 250 203.0 203.0 35.0 TL4051C12QDCKR SC70 DCK 5 3000 203.0 203.0 35.0 TL4051CIDBZR SOT-23 DBZ 3 3000 203.0 203.0 35.0 TL4051CIDBZT SOT-23 DBZ 3 250 203.0 203.0 35.0 TL4051CIDCKR SC70 DCK 5 3000 203.0 203.0 35.0 TL4051CQDBZR SOT-23 DBZ 3 3000 203.0 203.0 35.0 TL4051CQDCKR SC70 DCK 5 3000 203.0 203.0 35.0 PackMaterials-Page3

None

None

4203227/C

PACKAGE OUTLINE DBZ0003A SOT-23 - 1.12 mm max height SCALE 4.000 SMALL OUTLINE TRANSISTOR 2.64 C 2.10 1.12 MAX 1.4 1.2 B A 0.1 C PIN 1 INDEX AREA 1 0.95 3.04 1.9 2.80 3 2 0.5 3X 0.3 0.10 0.2 C A B (0.95) TYP 0.01 0.25 GAGE PLANE 0.20 TYP 0.08 0.6 TYP 0 -8 TYP 0.2 SEATING PLANE 4214838/C 04/2017 NOTES: 1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing per ASME Y14.5M. 2. This drawing is subject to change without notice. 3. Reference JEDEC registration TO-236, except minimum foot length. www.ti.com

EXAMPLE BOARD LAYOUT DBZ0003A SOT-23 - 1.12 mm max height SMALL OUTLINE TRANSISTOR PKG 3X (1.3) 1 3X (0.6) SYMM 3 2X (0.95) 2 (R0.05) TYP (2.1) LAND PATTERN EXAMPLE SCALE:15X SOLDER MASK SOLDER MASK METAL UNDER METAL OPENING OPENING SOLDER MASK 0.07 MAX 0.07 MIN ALL AROUND ALL AROUND NON SOLDER MASK SOLDER MASK DEFINED DEFINED (PREFERRED) SOLDER MASK DETAILS 4214838/C 04/2017 NOTES: (continued) 4. Publication IPC-7351 may have alternate designs. 5. Solder mask tolerances between and around signal pads can vary based on board fabrication site. www.ti.com

EXAMPLE STENCIL DESIGN DBZ0003A SOT-23 - 1.12 mm max height SMALL OUTLINE TRANSISTOR PKG 3X (1.3) 1 3X (0.6) SYMM 3 2X(0.95) 2 (R0.05) TYP (2.1) SOLDER PASTE EXAMPLE BASED ON 0.125 THICK STENCIL SCALE:15X 4214838/C 04/2017 NOTES: (continued) 6. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate design recommendations. 7. Board assembly site may have different recommendations for stencil design. www.ti.com

IMPORTANTNOTICEANDDISCLAIMER TI PROVIDES TECHNICAL AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS. These resources are intended for skilled developers designing with TI products. You are solely responsible for (1) selecting the appropriate TI products for your application, (2) designing, validating and testing your application, and (3) ensuring your application meets applicable standards, and any other safety, security, or other requirements. These resources are subject to change without notice. TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource. Other reproduction and display of these resources is prohibited. No license is granted to any other TI intellectual property right or to any third party intellectual property right. TI disclaims responsibility for, and you will fully indemnify TI and its representatives against, any claims, damages, costs, losses, and liabilities arising out of your use of these resources. TI’s products are provided subject to TI’s Terms of Sale (www.ti.com/legal/termsofsale.html) or other applicable terms available either on ti.com or provided in conjunction with such TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2020, Texas Instruments Incorporated