Product Sample & Technical Tools & Support & Reference Folder Buy Documents Software Community Design LM4120 SNVS049F–FEBRUARY2000–REVISEDMARCH2016 LM4120 Precision Micropower Low Dropout Voltage Reference 1 Features 3 Description • SmallSOT23-5Package The LM4120 device is a precision low-power, low 1 dropout bandgap voltage reference with up to 5-mA • LowDropoutVoltage:120mVTypicalat1mA outputcurrentsourceandsinkcapability. • HighOutputVoltageAccuracy:0.2% This series reference operates with input voltages as • SourceandSinkCurrentOutput: ±5mA low as 2 V and up to 12 V, consuming 160-µA • SupplyCurrent:160μATypical (typical) supply current. In power-down mode, device • LowTemperatureCoefficient:50ppm/°C currentdropstolessthan2μA. • EnablePin The LM4120 comes in two grades (A and Standard) • FixedOutputVoltages:1.8,2.048,2.5,3,3.3, and seven voltage options for greater flexibility. The best grade devices (A) have an initial accuracy of 4.096,and5V 0.2%, while the standard have an initial accuracy of • IndustrialTemperatureRange:−40°Cto85°C 0.5%, both with a temperature coefficient of • (ForExtendedTemperatureRange,−40°Cto 50ppm/°Censuredfrom −40°Cto125°C. 125°C,ContactTI) The very low dropout voltage, low supply current, and power-down capability of the LM4120 make this 2 Applications product an ideal choice for battery-powered and • Portable,Battery-PoweredEquipment portableapplications. • InstrumentationandProcessControl Thedeviceperformanceisensuredovertheindustrial • AutomotiveandIndustrial temperature range (−40°C to 85°C), while certain specifications are ensured over the extended • TestEquipment temperature range (−40°C to 125°C). Contact TI for • DataAcquisitionSystems full specifications over the extended temperature • PrecisionRegulators range. The LM4120 is available in a standard 5-pin SOT-23package. • BatteryChargers • BaseStations DeviceInformation(1) • Communications PARTNUMBER PACKAGE BODYSIZE(NOM) • MedicalEquipment LM4120 SOT-23(5) 1.60mm×2.90mm (1) For all available packages, see the orderable addendum at theendofthedatasheet. FunctionalBlockDiagram 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

LM4120 SNVS049F–FEBRUARY2000–REVISEDMARCH2016 www.ti.com Table of Contents 1 Features.................................................................. 1 7.3 FeatureDescription.................................................10 2 Applications........................................................... 1 7.4 DeviceFunctionalModes........................................10 3 Description............................................................. 1 8 ApplicationandImplementation........................ 11 4 RevisionHistory..................................................... 2 8.1 ApplicationInformation............................................11 8.2 TypicalApplication..................................................14 5 PinConfigurationandFunctions......................... 3 9 PowerSupplyRecommendations...................... 15 6 Specifications......................................................... 3 10 Layout................................................................... 16 6.1 AbsoluteMaximumRatings......................................3 6.2 ESDRatings..............................................................3 10.1 LayoutGuidelines.................................................16 6.3 RecommendedOperatingConditions......................4 10.2 LayoutExample...................................................16 6.4 ThermalInformation..................................................4 11 DeviceandDocumentationSupport................. 17 6.5 ElectricalCharacteristics...........................................4 11.1 CommunityResources..........................................17 6.6 TypicalCharacteristics..............................................7 11.2 Trademarks...........................................................17 7 DetailedDescription............................................ 10 11.3 ElectrostaticDischargeCaution............................17 7.1 Overview.................................................................10 11.4 Glossary................................................................17 7.2 FunctionalBlockDiagram.......................................10 12 Mechanical,Packaging,andOrderable Information........................................................... 17 4 Revision History NOTE:Pagenumbersforpreviousrevisionsmaydifferfrompagenumbersinthecurrentversion. ChangesfromRevisionE(February2016)toRevisionF Page • AddedupdatedLayoutExample ......................................................................................................................................... 16 ChangesfromRevisionD(July2015)toRevisionE Page • AddedupdatedLayoutExample.......................................................................................................................................... 16 ChangesfromRevisionC(April2013)toRevisionD Page • AddedESDRatingstable,FeatureDescriptionsection,DeviceFunctionalModes,ApplicationandImplementation section,PowerSupplyRecommendationssection,Layoutsection,DeviceandDocumentationSupportsection,and Mechanical,Packaging,andOrderableInformationsection. ................................................................................................ 1 ChangesfromRevisionB(April2013)toRevisionC Page • ChangedlayoutofNationalDataSheettoTIformat........................................................................................................... 14 2 SubmitDocumentationFeedback Copyright©2000–2016,TexasInstrumentsIncorporated ProductFolderLinks:LM4120

LM4120 www.ti.com SNVS049F–FEBRUARY2000–REVISEDMARCH2016 5 Pin Configuration and Functions DBVPackage 5-PinSOT-23 TopView PinFunctions PIN I/O DESCRIPTION NAME NO. Enable 3 I Pulledtoinputfornormaloperation.Forcingthispintogroundwillturnofftheoutput. GND 2 — Negativesupplyorgroundconnection REF 1 — REFpin.Thispinmustbeleftunconnected. V 4 I Positivesupply IN V 5 O Referenceoutput OUT 6 Specifications 6.1 Absolute Maximum Ratings overoperatingfree-airtemperaturerange(unlessotherwisenoted) (1) MIN MAX UNIT Maximumvoltageoninputorenablepins –0.3 14 V Outputshort-circuitduraion Indefinite Powerdissipation(T =25°C) (2) 350 mW A Soldering,(10sec.) 260 °C Leadtemperature VaporPhase(60sec.) 215 °C Infrared(15sec.) 220 °C Storagetemperature,T –65 150 °C stg (1) StressesbeyondthoselistedunderAbsoluteMaximumRatingsmaycausepermanentdamagetothedevice.Thesearestressratings only,whichdonotimplyfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderRecommended OperatingConditions.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability. (2) WithoutPCBcopperenhancements.ThemaximumpowerdissipationmustbederatedatelevatedtemperaturesandislimitedbyT JMAX (maximumjunctiontemperature),R (junction-to-ambientthermalresistance)andT (ambienttemperature).Themaximumpower θJA A dissipationatanytemperatureis:PDiss =(T –T )/R uptothevaluelistedintheAbsoluteMaximumRatings. MAX JMAX A θJA 6.2 ESD Ratings VALUE UNIT Humanbodymodel(HBM),perANSI/ESDA/JEDECJS-001(1) ±2000 Chargeddevicemodel(CDM),perJEDECspecificationJESD22- V(ESD) Electrostaticdischarge C101(2) ±750 V MachineModel ±200 (1) JEDECdocumentJEP155statesthat500-VHBMallowssafemanufacturingwithastandardESDcontrolprocess. (2) JEDECdocumentJEP157statesthat250-VCDMallowssafemanufacturingwithastandardESDcontrolprocess. Copyright©2000–2016,TexasInstrumentsIncorporated SubmitDocumentationFeedback 3 ProductFolderLinks:LM4120

LM4120 SNVS049F–FEBRUARY2000–REVISEDMARCH2016 www.ti.com 6.3 Recommended Operating Conditions overoperatingfree-airtemperaturerange(unlessotherwisenoted) MIN NOM MAX UNIT Ambienttemperature –40 85 °C Junctiontemperature –40 125 °C 6.4 Thermal Information LM4120 THERMALMETRIC(1) DBV[SOT-23] UNIT 5PINS R Junction-to-ambientthermalresistance 170.4 °C/W θJA R Junction-to-case(top)thermalresistance 123.9 °C/W θJC(top) R Junction-to-boardthermalresistance 30.4 °C/W θJB ψ Junction-to-topcharacterizationparameter 17.2 °C/W JT ψ Junction-to-boardcharacterizationparameter 29.9 °C/W JB (1) Formoreinformationabouttraditionalandnewthermalmetrics,seetheSemiconductorandICPackageThermalMetricsapplication report,SPRA953. 6.5 Electrical Characteristics unlessotherwisespecified,V =3.3V,I =0,C =0.01µF,T =T =25°C. IN LOAD OUT A j PARAMETER TESTCONDITIONS MIN (1) TYP (2) MAX (1) UNIT 1.8V,2.048V,AND2.5V Outputvoltageinitial accuracy LM4120A-1.800 ±0.2% LM4120A-2.048 VOUT LM4120A-2.500 LM4120-1.800 LM4120-2.048 ±0.5% LM4120-2.500 TCV /°C Temperaturecoefficient –40°C≤T ≤+125°C 14 50 ppm/°c OUT A 0.0007 0.008 ΔV /ΔV Lineregulation 3.3V≤V ≤12V %/V OUT IN IN –40°C≤T ≤85°C 0.01 A 0.03 0.08 0mA≤I ≤1mA LOAD –40°C≤T ≤85°C 0.17 A 0.01 0.04 ΔV /ΔI Loadregulation 1mA≤I ≤5mA %/mA OUT LOAD LOAD –40°C≤T ≤85°C 0.1 A –1mA≤I ≤0mA 0.04 0.12 LOAD –5mA≤I ≤−1mA 0.01 LOAD 45 65 I =0mA LOAD –40°C≤T ≤85°C 80 A 120 150 V −V Dropoutvoltage (3) I =1mA mV IN OUT LOAD –40°C≤T ≤85°C 180 A 180 210 I =5mA LOAD –40°C≤T ≤85°C 250 A (1) Limitsare100%productiontestedat25°C.LimitsovertheoperatingtemperaturerangeareensuredthroughcorrelationusingStatistical QualityControl(SQC)methods.ThelimitsareusedtocalculateTI'sAveragingOutgoingQualityLevel(AOQL). (2) Typicalnumbersareat25°Candrepresentthemostlikelyparametricnorm. (3) DropoutvoltageisthedifferentialvoltagebetweenV andV atwhichV changes≤1%fromV atV =3.3Vfor1.8V,2V, OUT IN OUT OUT IN 2.5V,andV +1Vforothers.For1.8-Voption,dropoutvoltageisnotensuredovertemperature.Aparasiticdiodeexistsbetween OUT inputandoutputpins;itwillconductifV ispulledtoahighervoltagethanV . OUT IN 4 SubmitDocumentationFeedback Copyright©2000–2016,TexasInstrumentsIncorporated ProductFolderLinks:LM4120

LM4120 www.ti.com SNVS049F–FEBRUARY2000–REVISEDMARCH2016 Electrical Characteristics (continued) unlessotherwisespecified,V =3.3V,I =0,C =0.01µF,T =T =25°C. IN LOAD OUT A j PARAMETER TESTCONDITIONS MIN (1) TYP (2) MAX (1) UNIT 0.1Hzto10Hz 20 V Output(4) µV N PP 10Hzto10kHz 36 160 250 I Supplycurrent µA S –40°C≤T ≤85°C 275 A Enable=0.4V 1 Power-downsupply I –40°C≤T ≤85°C µA SS current Enable=0J.2V –40°C≤TA≤85°C 2 2.4 V Logichighinputvoltage V H –40°C≤T ≤85°C 2.4 A 0.4 V Logiclowinputvoltage V L –40°C≤T ≤85°C 0.2 A 7 I Logichighinputcurrent µA H –40°C≤T ≤85°C 15 A I Logiclowinputcurrent 0.1 µA L 15 V =3.3V,V =0 IN OUT –40°C≤T ≤85°C 6 30 A I Shortcircuitcurrent mA SC 17 V =12V,V =0 IN OUT –40°C≤T ≤85°C 6 30 A Hyst Thermalhysteresis (5) –40°C≤T ≤125°C 0.5 mV/V A ΔV Longtermstability (6) 1000hrs@25°C 100 ppm OUT 3V,3.3V,4.096V,AND5V Outputvoltageinitial accuracy LM4120A-3.000 ±0.2% LM4120A-3.300 LM4120A-4.096 VOUT LM4120A-5.000 LM4120-3.000 LM4120-3.300 ±0.5% LM4120-4.096 LM4120-5.000 TCV /°C Temperaturecoefficient –40°C≤T ≤125°C 14 50 ppm/°c OUT A 0.0007 0.008 ΔV /ΔV Lineregulation (V +1V)≤V ≤12V %/V OUT IN OUT IN –40°C≤T ≤85°C 0.01 A 0.03 0.08 0mA≤I ≤1mA LOAD –40°C≤T ≤85°C 0.17 A 0.01 0.04 ΔV /ΔI Loadregulation 1mA≤I ≤5mA %/mA OUT LOAD LOAD –40°C≤T ≤85°C 0.1 A –1mA≤I ≤0mA 0.04 0.12 LOAD –5mA≤I ≤–1mA 0.01 LOAD 45 65 I =0mA LOAD –40°C≤T ≤85°C 80 A 120 150 V −V Dropoutvoltage (3) I =1mA mV IN OUT LOAD –40°C≤T ≤85°C 180 A 180 210 I =5mA LOAD –40°C≤T ≤85°C 250 A (4) OutputnoisevoltageisproportionaltoV .V forothervoltageoptioniscalculatedusing(V (1.8V)/1.8)×V . OUT N N OUT V (2.5V)=(36μV /1.8)×2.5=46μV . N PP PP (5) Thermalhysteresisisdefinedasthechangein25°Coutputvoltagebeforeandafterexposingthedevicetotemperatureextremes. (6) LongtermstabilityischangeinV at25°Cmeasuredcontinuouslyduring1000hours. REF Copyright©2000–2016,TexasInstrumentsIncorporated SubmitDocumentationFeedback 5 ProductFolderLinks:LM4120

LM4120 SNVS049F–FEBRUARY2000–REVISEDMARCH2016 www.ti.com Electrical Characteristics (continued) unlessotherwisespecified,V =3.3V,I =0,C =0.01µF,T =T =25°C. IN LOAD OUT A j PARAMETER TESTCONDITIONS MIN (1) TYP (2) MAX (1) UNIT 3V,3.3V,4.096V,AND5V(continued) 0.1Hzto10Hz 20 V Outputnoisevoltage(4) µV N PP 10Hzto10kHz 36 160 250 I Supplycurrent µA S –40°C≤T ≤85°C 275 A Enable=0.4V 1 Power-downsupply I –40°C≤T ≤85°C µA SS current Enable=0J.2V –40°C≤TA≤85°C 2 2.4 V Logichighinputvoltage V H –40°C≤T ≤85°C 2.4 A 0.4 V Logiclowinputvoltage V L –40°C≤T ≤85°C 0.2 A 7 I Logichighinputcurrent µA H –40°C≤T ≤85°C 15 A I Logiclowinputcurrent 0.1 µA L 15 V =0 OUT –40°C≤T ≤85°C 6 30 A I Shortcircuitcurrent mA SC 17 V =12V,V =0 IN OUT –40°C≤T ≤85°C 6 30 A Hyst Thermalhysteresis (5) –40°C≤T ≤125°C 0.5 mV/V A ΔV Longtermstability (6) 1000hours@25°C 100 ppm OUT 6 SubmitDocumentationFeedback Copyright©2000–2016,TexasInstrumentsIncorporated ProductFolderLinks:LM4120

LM4120 www.ti.com SNVS049F–FEBRUARY2000–REVISEDMARCH2016 6.6 Typical Characteristics unlessotherwisespecified,V =3.3V,V =2.5V,I =0,C =0.022µF,T =25°C,andV =V IN OUT LOAD OUT A EN IN Figure1.LongTermDrift Figure2.TypicalTemperatureDrift Figure3.ShortCircuitCurrentvsTemperature Figure4.DropoutVoltagevsOutputError Figure5.DropoutVoltagevsLoadCurrent Figure6.LineRegulation Copyright©2000–2016,TexasInstrumentsIncorporated SubmitDocumentationFeedback 7 ProductFolderLinks:LM4120

LM4120 SNVS049F–FEBRUARY2000–REVISEDMARCH2016 www.ti.com Typical Characteristics (continued) unlessotherwisespecified,V =3.3V,V =2.5V,I =0,C =0.022µF,T =25°C,andV =V IN OUT LOAD OUT A EN IN Figure7.LoadRegulation Figure8.GNDPinCurrent Figure9.GNDPinCurrentatNoLoadvsTemperature Figure10.GNDPinCurrentvsLoad Figure11.0.1-Hzto10-HzOutputNoise Figure12.OutputImpedancevsFrequency 8 SubmitDocumentationFeedback Copyright©2000–2016,TexasInstrumentsIncorporated ProductFolderLinks:LM4120

LM4120 www.ti.com SNVS049F–FEBRUARY2000–REVISEDMARCH2016 Typical Characteristics (continued) unlessotherwisespecified,V =3.3V,V =2.5V,I =0,C =0.022µF,T =25°C,andV =V IN OUT LOAD OUT A EN IN Figure13.PSRRvsFrequency Figure14.EnableResponse Figure15.LoadStepResponse Figure16.LineStepResponse Figure17.ThermalHysteresis Figure18.EnablePinCurrent Copyright©2000–2016,TexasInstrumentsIncorporated SubmitDocumentationFeedback 9 ProductFolderLinks:LM4120

LM4120 SNVS049F–FEBRUARY2000–REVISEDMARCH2016 www.ti.com 7 Detailed Description 7.1 Overview The LM4120 device is a precision bandgap voltage reference available in seven different voltage options with up to 5-mA current source and sink capability. This series reference can operate with input voltages from 2 V to 12 V while consuming 160-µA (typical) supply current. In power-down mode, device current drops to less than 2μA.TheLM4120isavailableintwogrades,AandStandard. The best grade devices (A) have an initial accuracy of 0.2% with a TEMPCO of 50 ppm/°C ensured from −40°C to125°C. 7.2 Functional Block Diagram 7.3 Feature Description 7.3.1 Enable The ENABLE analog input pin with limited hysteresis generally requires 6 µA (typical) of current to start up the part. During normal operation, the Enable pin must be connected to the VIN pin. There is a minimum slew rate on this pin of about 0.003 V/μs to prevent glitches on the output. All of these conditions can easily be met with ordinary CMOS or TTL logic. The Enable pin can also be used to remotely operate the LM4120 by pulling up the Enablepinvoltagetotheinputvoltagelevel. WhenremotelyshuttingdowntheLM4120,theEnablepinmustbepulleddowntotheground.Floatingthispinis notrecommended. 7.3.2 Reference The REF pin must remain unconnected in all cases. The reference pin is sensitive to noise, and capacitive loading.Therefore,duringthePCBlayoutcaremustbetakentokeepthispinisolatedasmuchaspossible. 7.4 Device Functional Modes Table1describesthefunctionalmodesoftheLM4120. Table1.EnablePinModeSummary ENABLEPINCONNECTION LOGICSTATE DESCRIPTION EN=VIN 1 NormalOperation.LM4120startsup. EN=GND 0 LM4120inshutdownmode 10 SubmitDocumentationFeedback Copyright©2000–2016,TexasInstrumentsIncorporated ProductFolderLinks:LM4120

LM4120 www.ti.com SNVS049F–FEBRUARY2000–REVISEDMARCH2016 8 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validateandtesttheirdesignimplementationtoconfirmsystemfunctionality. 8.1 Application Information The standard application circuit for the LM4120 is shown in Figure 29. The device is designed to be stable with ceramic output capacitors in the range of 0.022 µF to 0.047 µF. The minimum required output capacitor is 0.022 µF. These capacitors typically have an ESR of about 0.1 Ω to 0.5 Ω. Smaller ESR can be tolerated, but larger ESR cannot be tolerated. The output capacitor can be increased to improve load transient response, up to about 1 µF. However, values above 0.047 µF must be tantalum. With tantalum capacitors in the 1-µF range, a small capacitor between the output and the reference pin is required. This capacitor will typically be in the 50-pF range. Care must be taken when using output capacitors of 1 µF or larger. These applications must be thoroughlytestedovertemperature,line,andload. An input capacitor is typically not required. However, a 0.1-µF ceramic can be used to help prevent line transientsfromenteringtheLM4120.Largerinputcapacitorsmustbetantalumoraluminum. The reference pin is sensitive to noise, and capacitive loading. Therefore, the PCB layout must isolate this pin as muchaspossible. The enable pin is an analog input with very little hysteresis. About 6 µA into this pin is required to turn the part on, and it must be taken close to GND to turn the part off (see Electrical Characteristics for thresholds). If the shutdownfeatureisnotrequired,thenthispincansafelybeconnecteddirectlytotheinputsupply. Figure19. VoltageReferenceWithNegativeOutputCircuit Figure20. PrecisionHigh-CurrentLow-DropoutRegulatorCircuit Copyright©2000–2016,TexasInstrumentsIncorporated SubmitDocumentationFeedback 11 ProductFolderLinks:LM4120

LM4120 SNVS049F–FEBRUARY2000–REVISEDMARCH2016 www.ti.com Application Information (continued) Figure21. PrecisionHigh-CurrentNegativeVoltageRegulatorCircuit Figure22. VoltageReferenceWithComplimentaryOutputCircuit Figure23. PrecisionHigh-CurrentLow-DropoutRegulatorCircuit 12 SubmitDocumentationFeedback Copyright©2000–2016,TexasInstrumentsIncorporated ProductFolderLinks:LM4120

LM4120 www.ti.com SNVS049F–FEBRUARY2000–REVISEDMARCH2016 Application Information (continued) Figure24. StackingVoltageReferencesCircuit Figure25. PrecisionVoltageReferenceWithForceandSenseOutputCircuit Figure26. ProgrammableCurrentSourceCircuit Copyright©2000–2016,TexasInstrumentsIncorporated SubmitDocumentationFeedback 13 ProductFolderLinks:LM4120

LM4120 SNVS049F–FEBRUARY2000–REVISEDMARCH2016 www.ti.com Application Information (continued) Figure27. PrecisionRegulatorWithCurrentLimitingCircuit Figure28. PowerSupplySplitterCircuit 8.2 Typical Application Figure29. StandardApplicationCircuit 8.2.1 DesignRequirements Forthisdesignexample,usetheparameterslistedinTable2astheinputparameters. Table2.DesignParameters PARAMETER EXAMPLEVALUE OutputVoltageVOUT 1.8V,2.048V,2.5V,3V,3.3V,4.096V,5V InputVoltageRangeVIN VOUT120mVto12V LoadCurrent 1mA(typical) 14 SubmitDocumentationFeedback Copyright©2000–2016,TexasInstrumentsIncorporated ProductFolderLinks:LM4120

LM4120 www.ti.com SNVS049F–FEBRUARY2000–REVISEDMARCH2016 8.2.2 DetailedDesignProcedure 8.2.2.1 InputCapacitors Although not always required, an input capacitor is recommended. A supply bypass capacitor on the input assures that the reference is working from a source with low impedance, which improves stability. A bypass capacitor can also improve transient response by providing a reservoir of stored energy that the reference can utilize in case where the load current demand suddenly increases. The value used for CIN may be used without limit. 8.2.2.2 OutputCapacitors The LM4120 may require a 0.022-μF to 1-μF output capacitor for loop stability (compensation) as well as transient response. During the sudden changes in load current demand, the output capacitor must source or sink currentduringthetimeittakesthecontrolloopoftheLM4120torespond. 8.2.3 ApplicationCurves Figure30.Start-UpResponse Figure31.LoadStepResponse 9 Power Supply Recommendations Noise on the power-supply input can effect the output noise, but can be reduced by using an optional bypass capacitor between the input pin and the ground. A ceramic input capacitor more than 0.1 µF or higher can be usedforthatpurpose. Copyright©2000–2016,TexasInstrumentsIncorporated SubmitDocumentationFeedback 15 ProductFolderLinks:LM4120

LM4120 SNVS049F–FEBRUARY2000–REVISEDMARCH2016 www.ti.com 10 Layout 10.1 Layout Guidelines The mechanical stress due to PC board mounting can cause the output voltage to shift from its initial value. The center of a PC board generally has the highest mechanical and thermal expansion stress. Mounting the device near the edges or the corners of the board where mechanical stress is at its minimum. References in SOT packagesaregenerallylesspronetoassemblystressthandevicesinSmallOutline(SOIC)package. A mechanical isolation of the device by creating an island by cutting a U shape slot (U - SLOT) on the PCB while mounting the device helps in reducing the impact of the PC board stresses on the output voltage of the reference.Thisapproachwouldalsoprovidesomethermalisolationfromtherestofthecircuit. Figure 32 shows a recommended printed board layout for LM4120 along with an in-set diagram. The in-set diagram exhibits a slot cut on three sides of the reference IC, which provides a relief to the IC from external PCB stress. 10.2 Layout Example PCB Top View VOUT VIN PCB Length LM4120 PCB Side View STRESS STRESS U - SLOT REF GND EN LM4120 U - SLOT VOUT REF PCB Length GND Set C OUT Set C EN REF close to VOUT IN and GND close to V IN and GND CIN LM4120 COUT VIN VOUT Figure32. TypicalLayoutExampleWithLM4120 16 SubmitDocumentationFeedback Copyright©2000–2016,TexasInstrumentsIncorporated ProductFolderLinks:LM4120

LM4120 www.ti.com SNVS049F–FEBRUARY2000–REVISEDMARCH2016 11 Device and Documentation Support 11.1 Community Resources The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. TIE2E™OnlineCommunity TI'sEngineer-to-Engineer(E2E)Community.Createdtofostercollaboration amongengineers.Ate2e.ti.com,youcanaskquestions,shareknowledge,exploreideasandhelp solveproblemswithfellowengineers. DesignSupport TI'sDesignSupport QuicklyfindhelpfulE2Eforumsalongwithdesignsupporttoolsand contactinformationfortechnicalsupport. 11.2 Trademarks E2EisatrademarkofTexasInstruments. Allothertrademarksarethepropertyoftheirrespectiveowners. 11.3 Electrostatic Discharge Caution Thesedeviceshavelimitedbuilt-inESDprotection.Theleadsshouldbeshortedtogetherorthedeviceplacedinconductivefoam duringstorageorhandlingtopreventelectrostaticdamagetotheMOSgates. 11.4 Glossary SLYZ022—TIGlossary. Thisglossarylistsandexplainsterms,acronyms,anddefinitions. 12 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of thisdocument.Forbrowser-basedversionsofthisdatasheet,refertotheleft-handnavigation. Copyright©2000–2016,TexasInstrumentsIncorporated SubmitDocumentationFeedback 17 ProductFolderLinks:LM4120

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) LM4120AIM5-1.8/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R21A & no Sb/Br) LM4120AIM5-2.0/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R14A & no Sb/Br) LM4120AIM5-2.5 NRND SOT-23 DBV 5 1000 TBD Call TI Call TI -40 to 85 R08A LM4120AIM5-2.5/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R08A & no Sb/Br) LM4120AIM5-3.0 NRND SOT-23 DBV 5 1000 TBD Call TI Call TI -40 to 85 R15A LM4120AIM5-3.0/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R15A & no Sb/Br) LM4120AIM5-3.3 NRND SOT-23 DBV 5 1000 TBD Call TI Call TI -40 to 85 R16A LM4120AIM5-3.3/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R16A & no Sb/Br) LM4120AIM5-4.1/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R17A & no Sb/Br) LM4120AIM5-5.0 NRND SOT-23 DBV 5 1000 TBD Call TI Call TI -40 to 85 R18A LM4120AIM5-5.0/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R18A & no Sb/Br) LM4120AIM5X-1.8/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R21A & no Sb/Br) LM4120AIM5X-2.0/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R14A & no Sb/Br) LM4120AIM5X-2.5/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R08A & no Sb/Br) LM4120AIM5X-3.0/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R15A & no Sb/Br) LM4120AIM5X-3.3/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R16A & no Sb/Br) LM4120AIM5X-4.1 NRND SOT-23 DBV 5 3000 TBD Call TI Call TI -40 to 85 R17A LM4120AIM5X-4.1/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R17A & no Sb/Br) LM4120AIM5X-5.0/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R18A & 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) LM4120IM5-1.8/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R21B & no Sb/Br) LM4120IM5-2.0/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R14B & no Sb/Br) LM4120IM5-2.5/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R08B & no Sb/Br) LM4120IM5-3.0 NRND SOT-23 DBV 5 1000 TBD Call TI Call TI -40 to 85 R15B LM4120IM5-3.0/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R15B & no Sb/Br) LM4120IM5-3.3 NRND SOT-23 DBV 5 1000 TBD Call TI Call TI -40 to 85 R16B LM4120IM5-3.3/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R16B & no Sb/Br) LM4120IM5-4.1/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R17B & no Sb/Br) LM4120IM5-5.0/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R18B & no Sb/Br) LM4120IM5X-1.8/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R21B & no Sb/Br) LM4120IM5X-2.0/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R14B & no Sb/Br) LM4120IM5X-2.5/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R08B & no Sb/Br) LM4120IM5X-3.0/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R15B & no Sb/Br) LM4120IM5X-3.3/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R16B & no Sb/Br) LM4120IM5X-4.1/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R17B & no Sb/Br) LM4120IM5X-5.0/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 85 R18B & no Sb/Br) (1) The marketing status values are defined as follows: 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. Addendum-Page 2

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 (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 29-Sep-2019 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) LM4120AIM5-1.8/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120AIM5-2.0/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120AIM5-2.5 SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120AIM5-2.5/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120AIM5-3.0 SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120AIM5-3.0/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120AIM5-3.3 SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120AIM5-3.3/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120AIM5-4.1/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120AIM5-5.0 SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120AIM5-5.0/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120AIM5X-1.8/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120AIM5X-2.0/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120AIM5X-2.5/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120AIM5X-3.0/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120AIM5X-3.3/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120AIM5X-4.1 SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120AIM5X-4.1/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 PackMaterials-Page1

PACKAGE MATERIALS INFORMATION www.ti.com 29-Sep-2019 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) LM4120AIM5X-5.0/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120IM5-1.8/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120IM5-2.0/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120IM5-2.5/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120IM5-3.0 SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120IM5-3.0/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120IM5-3.3 SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120IM5-3.3/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120IM5-4.1/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120IM5-5.0/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120IM5X-1.8/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120IM5X-2.0/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120IM5X-2.5/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120IM5X-3.0/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120IM5X-3.3/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120IM5X-4.1/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM4120IM5X-5.0/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 *Alldimensionsarenominal PackMaterials-Page2

PACKAGE MATERIALS INFORMATION www.ti.com 29-Sep-2019 Device PackageType PackageDrawing Pins SPQ Length(mm) Width(mm) Height(mm) LM4120AIM5-1.8/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120AIM5-2.0/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120AIM5-2.5 SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120AIM5-2.5/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120AIM5-3.0 SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120AIM5-3.0/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120AIM5-3.3 SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120AIM5-3.3/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120AIM5-4.1/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120AIM5-5.0 SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120AIM5-5.0/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120AIM5X-1.8/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LM4120AIM5X-2.0/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LM4120AIM5X-2.5/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LM4120AIM5X-3.0/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LM4120AIM5X-3.3/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LM4120AIM5X-4.1 SOT-23 DBV 5 3000 210.0 185.0 35.0 LM4120AIM5X-4.1/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LM4120AIM5X-5.0/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LM4120IM5-1.8/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120IM5-2.0/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120IM5-2.5/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120IM5-3.0 SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120IM5-3.0/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120IM5-3.3 SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120IM5-3.3/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120IM5-4.1/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120IM5-5.0/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LM4120IM5X-1.8/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LM4120IM5X-2.0/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LM4120IM5X-2.5/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LM4120IM5X-3.0/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LM4120IM5X-3.3/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LM4120IM5X-4.1/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LM4120IM5X-5.0/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 PackMaterials-Page3

PACKAGE OUTLINE DBV0005A SOT-23 - 1.45 mm max height SCALE 4.000 SMALL OUTLINE TRANSISTOR C 3.0 2.6 0.1 C 1.75 1.45 1.45 B A 0.90 PIN 1 INDEX AREA 1 5 2X 0.95 3.05 2.75 1.9 1.9 2 4 3 0.5 5X 0.3 0.15 0.2 C A B (1.1) TYP 0.00 0.25 GAGE PLANE 0.22 TYP 0.08 8 TYP 0.6 0 0.3 TYP SEATING PLANE 4214839/E 09/2019 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. Refernce JEDEC MO-178. 4. Body dimensions do not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not exceed 0.15 mm per side. www.ti.com

EXAMPLE BOARD LAYOUT DBV0005A SOT-23 - 1.45 mm max height SMALL OUTLINE TRANSISTOR PKG 5X (1.1) 1 5 5X (0.6) SYMM (1.9) 2 2X (0.95) 3 4 (R0.05) TYP (2.6) LAND PATTERN EXAMPLE EXPOSED METAL SHOWN SCALE:15X SOLDER MASK SOLDER MASK METAL UNDER METAL OPENING OPENING SOLDER MASK EXPOSED METAL EXPOSED METAL 0.07 MAX 0.07 MIN ARROUND ARROUND NON SOLDER MASK SOLDER MASK DEFINED DEFINED (PREFERRED) SOLDER MASK DETAILS 4214839/E 09/2019 NOTES: (continued) 5. Publication IPC-7351 may have alternate designs. 6. Solder mask tolerances between and around signal pads can vary based on board fabrication site. www.ti.com

EXAMPLE STENCIL DESIGN DBV0005A SOT-23 - 1.45 mm max height SMALL OUTLINE TRANSISTOR PKG 5X (1.1) 1 5 5X (0.6) SYMM 2 (1.9) 2X(0.95) 3 4 (R0.05) TYP (2.6) SOLDER PASTE EXAMPLE BASED ON 0.125 mm THICK STENCIL SCALE:15X 4214839/E 09/2019 NOTES: (continued) 7. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate design recommendations. 8. Board assembly site may have different recommendations for stencil design. www.ti.com

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