Product Sample & Technical Tools & Support & Folder Buy Documents Software Community LP2981-N SNOS773N–MARCH2000–REVISEDAPRIL2016 LP2981-N Micropower 100-mA Ultralow Dropout Regulator in SOT-23 Package 1 Features 3 Description • OperatingInputVoltageRange:2.1Vto16V The LP2981-N is a 100-mA, fixed-output voltage 1 regulator designed specifically to meet the • Ultralow-DropoutVoltage requirementsofbattery-poweredapplications. • OutputVoltageAccuracy0.75%(AGrade) Using an optimized Vertically Integrated PNP (VIP) • Specified100-mAOutputCurrent process, the LP2981-N delivers unequaled • <1-μAQuiescentCurrentwhenShutdown performance in all specifications critical to battery- • LowGroundPinCurrentatAllLoadCurrents powereddesigns: • HighPeakCurrentCapability(300mATypical) Dropout Voltage: Typically 200 mV at 100-mA load, • WideSupplyVoltageRange(16VMaximum) and7mVat1-mAload. • FastDynamicResponsetoLineandLoad Ground Pin Current: Typically 600 μA at 100-mA load,and80μAat1-mAload. • LowZ OverWideFrequencyRange OUT • OvertemperatureandOvercurrentProtection Sleep Mode: Less than 1-μA quiescent current when ON/OFF pinispulledlow. • −40°Cto125°CJunctionTemperatureRange Precision Output: 0.75% tolerance output voltages 2 Applications available(Agrade). • CellularPhones Assorted voltage options, from 2.5 V to 5 V, are • PalmtopandLaptopComputers availableasstandardproducts. • PersonalDigitalAssistants(PDA) DeviceInformation(1) • Camcorders,PersonalStereos,Cameras PARTNUMBER PACKAGE BODYSIZE(NOM) LP2981-N SOT-23(5) 2.90mm×1.60mm (1) For all available packages, see the orderable addendum at theendofthedatasheet. TypicalApplication V IN OUT V IN OUT C C IN OUT GND ON/OFF ON/OFF NC Copyright © 2016, Texas Instruments Incorporated 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

LP2981-N SNOS773N–MARCH2000–REVISEDAPRIL2016 www.ti.com Table of Contents 1 Features.................................................................. 1 7.4 DeviceFunctionalModes........................................15 2 Applications........................................................... 1 8 ApplicationandImplementation........................ 16 3 Description............................................................. 1 8.1 ApplicationInformation............................................16 4 RevisionHistory..................................................... 2 8.2 TypicalApplication .................................................16 5 PinConfigurationandFunctions......................... 3 9 PowerSupplyRecommendations...................... 20 6 Specifications......................................................... 4 10 Layout................................................................... 20 6.1 AbsoluteMaximumRatings......................................4 10.1 LayoutGuidelines.................................................20 6.2 ESDRatings..............................................................4 10.2 LayoutExample....................................................20 6.3 RecommendedOperatingConditions.......................4 11 DeviceandDocumentationSupport................. 21 6.4 ThermalInformation..................................................5 11.1 Third-PartyProductsDisclaimer...........................21 6.5 ElectricalCharacteristics...........................................5 11.2 CommunityResources..........................................21 6.6 TypicalCharacteristics..............................................8 11.3 Trademarks...........................................................21 7 DetailedDescription............................................ 14 11.4 ElectrostaticDischargeCaution............................21 7.1 Overview.................................................................14 11.5 Glossary................................................................21 7.2 FunctionalBlockDiagram.......................................14 12 Mechanical,Packaging,andOrderable Information........................................................... 21 7.3 FeatureDescription.................................................14 4 Revision History NOTE:Pagenumbersforpreviousrevisionsmaydifferfrompagenumbersinthecurrentversion. ChangesfromRevisionM(September2015)toRevisionN Page • ChangedupdatetypicalapplicationdrawingandchangepinnamesfromVin,VouttoINandOUT................................... 1 ChangesfromRevisionL(June2015)toRevisionM Page • ChangedsplitoutESDvaluesbyspecificpins ..................................................................................................................... 4 • Changedcorrectjunction-to-caseandjunction-to-boardvalues(typofromlastformatupdate) .......................................... 5 ChangesfromRevisionK(April2013)toRevisionL Page • Changed"Nine"to"Assorted"................................................................................................................................................ 1 • AddedPinConfigurationandFunctionssection,ESDRatingstable,FeatureDescriptionsection,DeviceFunctional Modes,ApplicationandImplementationsection,PowerSupplyRecommendationssection,Layoutsection,Device andDocumentationSupportsection,andMechanical,Packaging,andOrderableInformationsection .............................. 1 • ChangedtextofNCpindescription....................................................................................................................................... 3 • Changedthermalvalueinfootnote3 .................................................................................................................................... 4 • ChangedthermalvaluestoTImeasure ................................................................................................................................ 5 ChangesfromRevisionJ(January2009)toRevisionK Page • ChangedlayoutofNationalDataSheettoTIformat........................................................................................................... 19 2 SubmitDocumentationFeedback Copyright©2000–2016,TexasInstrumentsIncorporated ProductFolderLinks:LP2981-N

LP2981-N www.ti.com SNOS773N–MARCH2000–REVISEDAPRIL2016 5 Pin Configuration and Functions DBVPackage 5-PinSOT-23 TopView PinFunctions PIN TYPE DESCRIPTION NO. NAME 1 IN I Inputvoltagepin 2 GND — Commonground(devicesubstrate) 3 ON/OFF I Logichighenableinput DONOTCONNECT.Devicepin4isreservedforpostpackagingtestandcalibrationofthe LP2989VOUTaccuracy.Devicepin2mustbeleftfloating.Donotconnecttoanypotential.Do notconnecttoground.Anyattempttodopincontinuitytestingondevicepin2isdiscouraged. 4 NC — Continuitytestresultswillbevariabledependingontheactionsofthefactorycalibration. Aggressivepincontinuitytesting(highvoltage,orhighcurrent)ondevicepin2mayactivatethe trimcircuitryforcingVOUTtomoveoutoftolerance. 5 OUT O Regulatedoutputvoltage Copyright©2000–2016,TexasInstrumentsIncorporated SubmitDocumentationFeedback 3 ProductFolderLinks:LP2981-N

LP2981-N SNOS773N–MARCH2000–REVISEDAPRIL2016 www.ti.com 6 Specifications 6.1 Absolute Maximum Ratings overoperatingfree-airtemperaturerange(unlessotherwisenoted)(1)(2) MIN MAX UNIT Operatingjunctiontemperature −40 125 °C Powerdissipation(3) Internallylimited Inputsupplyvoltage(survival) −0.3 16 V Inputsupplyvoltage(operating) 2.1 16 V Shutdowninputvoltage(survival) −0.3 16 V Outputvoltage(survival)(4) −0.3 9 V I (survival) Short-circuitprotected OUT Input-outputvoltage(survival)(5) −0.3 16 V Storagetemperature –65 150 °C (1) StressesbeyondthoselistedunderAbsoluteMaximumRatingsmaycausepermanentdamagetothedevice.Thesearestressratings only,whichdonotimplyfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderRecommended OperatingConditions.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability. (2) IfMilitary/Aerospace-specifieddevicesarerequired,pleasecontacttheTexasInstrumentsSalesOffice/Distributorsforavailabilityand specifications. (3) Themaximumallowablepowerdissipationisafunctionofthemaximumjunctiontemperature,T ,thejunction-to-ambientthermal J(MAX) resistance,R ,andtheambienttemperature,T .Themaximumallowablepowerdissipationatanyambienttemperatureiscalculated θJA A usingP =(T –T )/R .ThevalueofR fortheSOT-23packageis175.7°C/W.Exceedingthemaximumallowablepower (MAX) J(MAX) A θJA θJA dissipationwillcauseexcessivedietemperature,andtheregulatorwillgointothermalshutdown. (4) Ifusedinadual-supplysystemwheretheregulatorloadisreturnedtoanegativesupply,theLP2980-Noutputmustbediode-clamped toground. (5) TheoutputPNPstructurecontainsadiodebetweentheINandOUTpinsthatisnormallyreverse-biased.Reversingthepolarityfrom V toV willturnonthisdiode(SeeReverseCurrentPath). IN OUT 6.2 ESD Ratings VALUE UNIT Electrostatic Humanbodymodel(HBM),perANSI/ESDA/JEDECJS-001(1) Pins1,2and5 ±2000 V V (ESD) discharge Pins3and4 ±1000 (1) JEDECdocumentJEP155statesthat500-VHBMallowssafemanufacturingwithastandardESDcontrolprocess. 6.3 Recommended Operating Conditions overoperatingfree-airtemperaturerange(unlessotherwisenoted) MIN MAX UNIT Operatingjunctiontemperature −40 125 °C Inputsupplyvoltage(operating) 2.1 16 V 4 SubmitDocumentationFeedback Copyright©2000–2016,TexasInstrumentsIncorporated ProductFolderLinks:LP2981-N

LP2981-N www.ti.com SNOS773N–MARCH2000–REVISEDAPRIL2016 6.4 Thermal Information LP2981-N THERMALMETRIC(1) DBV(SOT-23) UNIT 5PINS R Junction-to-ambientthermalresistance,High-K 175.7 °C/W θJA R Junction-to-case(top)thermalresistance 78.0 °C/W θJC(top) R Junction-to-boardthermalresistance 30.8 °C/W θJB ψ Junction-to-topcharacterizationparameter 2.8 °C/W JT ψ Junction-to-boardcharacterizationparameter 30.3 °C/W JB R Junction-to-case(bottom)thermalresistance N/A °C/W θJC(bot) (1) Formoreinformationabouttraditionalandnewthermalmetrics,seetheSemiconductorandICPackageThermalMetricsapplication report,SPRA953. 6.5 Electrical Characteristics Unlessotherwisespecified:T =25°C,V =V +1V,I =1mA,C =1μF,V =2V.(1) J IN O(NOM) L OUT ON/OFF LP2981AI-XX(2) LP2981I-XX(2) PARAMETER TESTCONDITIONS UNIT MIN TYP MAX MIN TYP MAX I =1mA −0.75 0.75 −1.25 1.25 L Outputvoltage 1mA<I <100mA −1 1 −2 2 ΔV L %V O tolerance NOM 1mA<I <100mA L −2.5 2.5 −3.5 3.5 –40°C≤T ≤125°C J V +1V≤V ≤16V 0.007 0.014 0.007 0.014 O(NOM) IN Outputvoltageline ΔVO/ΔVIN regulation VO(NOM)+1V≤VIN≤16V 0.032 0.032 %/V –40°C≤T ≤125°C J I =0mA 1 3 1 3 L I =0mA,–40°C≤T ≤125°C 5 5 L J I =1mA 7 10 7 10 L I =1mA,–40°C≤T ≤125°C 15 15 V –V Dropoutvoltage(3) L J mV IN O I =25mA 70 100 70 100 L I =25mA,–40°C≤T ≤125°C 150 150 L J I =100mA 200 250 200 250 L I =100mA,–40°C≤T ≤125°C 375 375 L J I =0mA 65 95 65 95 L I =0mA,–40°C≤T ≤125°C 125 125 L J I =1mA 80 110 80 110 L I =1mA,–40°C≤T ≤125°C 170 170 L J I =25mA 200 300 200 300 L IGND Groundpincurrent IL=25mA,–40°C≤TJ≤125°C 550 550 μA I =100mA 600 800 600 800 L I =100mA,–40°C≤T ≤125°C 1500 1500 L J V <0.3V 0.01 0.8 0.01 0.8 ON/OFF V <0.15V ON/OFF 0.05 2 0.05 2 –40°C≤T ≤125°C J (1) Minimumandmaximumlimitsareensuredthroughtest,design,orstatisticalcorrelationoverthejunctiontemperature(T)rangeof J –40°Cto125°C,unlessotherwisestated.TypicalvaluesrepresentthemostlikelyparametricnormatT =25°C,andareprovidedfor A referencepurposesonly. (2) Limitsare100%productiontestedat25°C.LimitsovertheoperatingtemperaturerangeareensuredthroughcorrelationusingStatistical QualityControl(SQC)methods.ThelimitsareusedtocalculateAverageOutgoingQualityLevel(AOQL). (3) Dropoutvoltageisdefinedastheinputtooutputdifferentialatwhichtheoutputvoltagedrops100mVbelowthevaluemeasuredwitha 1-Vdifferential. Copyright©2000–2016,TexasInstrumentsIncorporated SubmitDocumentationFeedback 5 ProductFolderLinks:LP2981-N

LP2981-N SNOS773N–MARCH2000–REVISEDAPRIL2016 www.ti.com Electrical Characteristics (continued) Unlessotherwisespecified:T =25°C,V =V +1V,I =1mA,C =1μF,V =2V.(1) J IN O(NOM) L OUT ON/OFF LP2981AI-XX(2) LP2981I-XX(2) PARAMETER TESTCONDITIONS UNIT MIN TYP MAX MIN TYP MAX High=O/PON 1.4 1.4 High=O/PON 1.6 1.6 ON/OFFinput –40°C≤TJ≤125°C VON/OFF voltage(4) Low=O/POFF 0.5 0.5 V Low=O/POFF 0.15 0.15 –40°C≤T ≤125°C J V =0V 0.01 0.01 ON/OFF V =0V ON/OFF –1 –1 –40°C≤T ≤125°C J I ON/OFFinputcurrent μA ON/OFF V =5V 5 5 ON/OFF V =5V ON/OFF 15 15 –40°C≤T ≤125°C J I Peakoutputcurrent V ≥V −5% 150 400 150 mA O(PK) OUT O(NOM) (4) TheON/OFFinputsmustbeproperlydriventopreventmisoperation.Fordetails,seeOperationWithON/OFFControl. 6 SubmitDocumentationFeedback Copyright©2000–2016,TexasInstrumentsIncorporated ProductFolderLinks:LP2981-N

LP2981-N www.ti.com SNOS773N–MARCH2000–REVISEDAPRIL2016 Electrical Characteristics (continued) Unlessotherwisespecified:T =25°C,V =V +1V,I =1mA,C =1μF,V =2V.(1) J IN O(NOM) L OUT ON/OFF LP2981AI-XX(2) LP2981I-XX(2) PARAMETER TESTCONDITIONS UNIT MIN TYP MAX MIN TYP MAX e Outputnoisevoltage BW=300Hzto50kHz n 160 160 μV (RMS) C =10μF OUT ΔV /ΔV Ripplerejection ƒ=1kHz,C =10μF 63 63 dB O IN OUT I Short-circuitcurrent R =0Ω(steadystate)(5) 150 150 mA O(MAX) L (5) Seerelatedcurve(s)inTypicalCharacteristicssection. Copyright©2000–2016,TexasInstrumentsIncorporated SubmitDocumentationFeedback 7 ProductFolderLinks:LP2981-N

LP2981-N SNOS773N–MARCH2000–REVISEDAPRIL2016 www.ti.com 6.6 Typical Characteristics Unlessotherwisespecified:T =25°C,V =V +1V,C =4.7μF,C =1μFallvoltageoptions,ON/OFFpintiedto A IN O(NOM) OUT IN V . IN Figure1.5-VOutputVoltagevsTemperature Figure2.3.3-VOutputVoltagevsTemperature Figure3.3-VOutputVoltagevsTemperature Figure4.5-VDropoutCharacteristics Figure5.3.3-VDropoutCharacteristics Figure6.3-VDropoutCharacteristics 8 SubmitDocumentationFeedback Copyright©2000–2016,TexasInstrumentsIncorporated ProductFolderLinks:LP2981-N

LP2981-N www.ti.com SNOS773N–MARCH2000–REVISEDAPRIL2016 Typical Characteristics (continued) Unlessotherwisespecified:T =25°C,V =V +1V,C =4.7μF,C =1μFallvoltageoptions,ON/OFFpintiedto A IN O(NOM) OUT IN V . IN Figure7.DropoutVoltagevsTemperature Figure8.DropoutVoltagevsLoadCurrent Figure9.GroundPinCurrentvsTemperature Figure10.GroundPinCurrentvsLoadCurrent Figure11.InputCurrentvsVIN Figure12.InputCurrentvsVIN Copyright©2000–2016,TexasInstrumentsIncorporated SubmitDocumentationFeedback 9 ProductFolderLinks:LP2981-N

LP2981-N SNOS773N–MARCH2000–REVISEDAPRIL2016 www.ti.com Typical Characteristics (continued) Unlessotherwisespecified:T =25°C,V =V +1V,C =4.7μF,C =1μFallvoltageoptions,ON/OFFpintiedto A IN O(NOM) OUT IN V . IN Figure13.LineTransientResponse Figure14.LineTransientResponse Figure15.LoadTransientResponse Figure16.LoadTransientResponse Figure17. LoadTransientResponse Figure18.LoadTransientResponse 10 SubmitDocumentationFeedback Copyright©2000–2016,TexasInstrumentsIncorporated ProductFolderLinks:LP2981-N

LP2981-N www.ti.com SNOS773N–MARCH2000–REVISEDAPRIL2016 Typical Characteristics (continued) Unlessotherwisespecified:T =25°C,V =V +1V,C =4.7μF,C =1μFallvoltageoptions,ON/OFFpintiedto A IN O(NOM) OUT IN V . IN Figure19.Short-CircuitCurrent Figure20.InstantaneousShortCircuitCurrentvs Temperature Figure21.Short-CircuitCurrent Figure22.InstantaneousShort-CircuitCurrentvsOutput Voltage Figure23.OutputImpedancevsFrequency Figure24.RippleRejection Copyright©2000–2016,TexasInstrumentsIncorporated SubmitDocumentationFeedback 11 ProductFolderLinks:LP2981-N

LP2981-N SNOS773N–MARCH2000–REVISEDAPRIL2016 www.ti.com Typical Characteristics (continued) Unlessotherwisespecified:T =25°C,V =V +1V,C =4.7μF,C =1μFallvoltageoptions,ON/OFFpintiedto A IN O(NOM) OUT IN V . IN Figure25.OutputNoiseDensity Figure26.OutputImpedancevsFrequency Figure27.Input-to-OutputLeakagevsTemperature Figure28.OutputReverseLeakagevsTemperature Figure29.TurnonWaveform Figure30.TurnoffWaveform 12 SubmitDocumentationFeedback Copyright©2000–2016,TexasInstrumentsIncorporated ProductFolderLinks:LP2981-N

LP2981-N www.ti.com SNOS773N–MARCH2000–REVISEDAPRIL2016 Typical Characteristics (continued) Unlessotherwisespecified:T =25°C,V =V +1V,C =4.7μF,C =1μFallvoltageoptions,ON/OFFpintiedto A IN O(NOM) OUT IN V . IN Figure31.ON/OFFPinCurrentvsV Figure32.ON/OFFThresholdvsTemperature ON/OFF Copyright©2000–2016,TexasInstrumentsIncorporated SubmitDocumentationFeedback 13 ProductFolderLinks:LP2981-N

LP2981-N SNOS773N–MARCH2000–REVISEDAPRIL2016 www.ti.com 7 Detailed Description 7.1 Overview The LP2981-N is a 100-mA, fixed-output voltage regulator designed specifically to meet the requirements of battery-powered applications. Available in assorted output voltages from 2.5 V to 5 V, the device has an output tolerance of 0.75% for the A grade (1.25% for the non-A version). Using a VIP process, the LP2981-N contains thesefeaturestofacilitatebattery-powereddesigns: • Fixed5-V,3.6-V,3.3-V,3-V,and2.5-Voutputversions • Veryhigh-accuracy1.23-Vreference • Low-dropoutvoltage,typicaldropoutof200mVat100-mAloadcurrentand7mVat1-mAload • Lowgroundcurrent,typically600 μAat100-mAloadand80 μAat1-mAload • Asleepmodefeatureisavailable,allowingtheregulatortoconsumeonly1 µA(typical)whentheON/OFF pin ispulledlow. • Overtemperature protection and overcurrent protection circuitry is designed to safeguard the device during unexpectedconditions. 7.2 Functional Block Diagram 7.3 Feature Description 7.3.1 MultipleVoltageOptions To meet the different application requirements, the LP2981-N provides multiple fixed output options from 2.5 V to 5V. 7.3.2 High-AccuracyOutputVoltage With special careful design to minimize all contributions to the output voltage error, the LP2981-N distinguishes itself as a very high-accuracy output voltage micropower LDO. This includes a tight initial tolerance (0.75% typical), extremely good line regulation (0.007%/V typical), and a very low output voltage temperature coefficient, makingthepartanideallow-powervoltagereference. 14 SubmitDocumentationFeedback Copyright©2000–2016,TexasInstrumentsIncorporated ProductFolderLinks:LP2981-N

LP2981-N www.ti.com SNOS773N–MARCH2000–REVISEDAPRIL2016 Feature Description (continued) 7.3.3 Ultra-Low-DropoutVoltage Generally speaking, the dropout voltage often refers to the voltage difference between the input and output voltage (VDO = V – V ), where the main current pass-FET is fully on in the ohmic region of operation and is IN OUT characterized by the classic R of the FET. VDO indirectly specifies a minimum input voltage above the DS(ON) nominal programmed output voltage at which the output voltage is expected to remain within its accuracy boundary. 7.3.4 LowGroundCurrent LP2981-N uses a vertical PNP process which allows for quiescent currents that are considerably lower than thoseassociatedwithtraditionallateralPNPregulators,typically600 μAat100-mAloadand80 μAat1-mAload. 7.3.5 SleepMode WhenpullingtheON/OFF pintolowlevel,LP2981-Nwillentersleepmode,andlessthan1-μAquiescentcurrent is consumed. This function is designed for the application which needs a sleep mode to effectively enhance batterylifecycle. 7.3.6 Short-CircuitProtection(CurrentLimit) Theinternalcurrent-limitcircuitisusedtoprotecttheLDOagainsthigh-loadcurrentfaultsorshortingevents.The LDO is not designed to operate in a steady-state current limit. During a current-limit event, the LDO sources constant current. Therefore, the output voltage falls when load impedance decreases. If a current limit occurs and the resulting output voltage is low, excessive power may be dissipated across the LDO resulting in a thermal shutdown of the output. A foldback feature limits the short-circuit current to protect the regulator from damage under all load conditions. If OUT is forced below 0 V before EN goes high and the load current required exceeds thefoldbackcurrentlimit,thedevicemaynotstartupcorrectly. 7.3.7 ThermalProtection The LP2981-N contains a thermal shutdown protection circuit to turn off the output current when excessive heat is dissipated in the LDO. The thermal time-constant of the semiconductor die is fairly short, and thus the output cycles on and off at a high rate when thermal shutdown is reached until the power dissipation is reduced. The internal protection circuitry of the LM2981-N is designed to protect against thermal overload conditions. The circuitry is not intended to replace proper heat sinking. Continuously running the device into thermal shutdown degradesitsreliability. 7.4 Device Functional Modes 7.4.1 OperationwithV +1V≤ V < 16V OUT(TARGET) IN The device operates if the input voltage is equal to, or exceeds, V + 0.6 V. At input voltages below the OUT(TARGET) minimumV requirement,thedevicedoesnotoperatecorrectlyandoutputvoltagemaynotreachtargetvalue. IN 7.4.2 OperationWithON/OFF Control If the voltage on the ON/OFF pin is less than 0.15 V, the device is disabled, and the shutdown current does not exceed1μA.RaisingON/OFF above1.4Vinitiatesthestart-upsequenceofthedevice. Copyright©2000–2016,TexasInstrumentsIncorporated SubmitDocumentationFeedback 15 ProductFolderLinks:LP2981-N

LP2981-N SNOS773N–MARCH2000–REVISEDAPRIL2016 www.ti.com 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 LP2981-N is a linear voltage regulator operating from 2.1 V to 16 V on the input and regulates voltages between 2.5 V to 5 V with 0.75% accuracy and 100-mA maximum output current. Efficiency is defined by the ratio of output voltage to input voltage because the LP2981-N is a linear voltage regulator. To achieve high efficiency, the dropout voltage (V – V ) must be as small as possible, thus requiring a very-low-dropout LDO. IN OUT Successfully implementing an LDO in an application depends on the application requirements. If the requirements are simply input voltage and output voltage, compliance specifications (such as internal power dissipation or stability) must be verified to ensure a solid design. If timing, start-up, noise, power supply rejection ratio(PSRR),oranyothertransientspecificationisrequired,thenthedesignbecomesmorechallenging. 8.2 Typical Application VIN IN OUT VOUT CIN COUT GND ON/OFF ON/OFF NC Copyright © 2016, Texas Instruments Incorporated *ON/OFFinputmustbeactivelyterminated.TietoV ifthisfunctionisnottobeused. IN **Minimumoutputcapacitanceisshowntoinsurestabilityoverfullloadcurrentrange.Morecapacitanceprovides superiordynamicperformanceandadditionalstabilitymargin(seeCapacitorCharacteristics). ***Donotmakeconnectionstothispin. Figure33. LP2981-NTypicalApplication 8.2.1 DesignRequirements PARAMETER DESIGNREQUIREMENT Inputvoltage 5V±10%,providedbytheDC-DCconverterswitchingat1MHz Outputvoltage 3.3V±5% Outputcurrent 100mA(maximum),1mA(minimum) RMSnoise,300Hzto50kHz <1mV RMS PSRRat1kHz >40dB 8.2.2 DetailedDesignProcedure 8.2.2.1 ExternalCapacitors Like any low-dropout regulator, the external capacitors used with the LP2981-N must be carefully selected to assureregulatorloopstability. 16 SubmitDocumentationFeedback Copyright©2000–2016,TexasInstrumentsIncorporated ProductFolderLinks:LP2981-N

LP2981-N www.ti.com SNOS773N–MARCH2000–REVISEDAPRIL2016 8.2.2.1.1 InputCapacitor An input capacitor with a value ≥ 1 μF is required with the LP2981-N (amount of capacitance can be increased withoutlimit). This capacitor must be located a distance of not more than 0.5 inches from the input pin of the LP2981-N and returnedtoacleananalogground.Anygoodqualityceramicortantalumcanbeusedforthiscapacitor. 8.2.2.1.2 OutputCapacitor The output capacitor must meet both the requirement for minimum amount of capacitance and equivalent series resistance (ESR) value. Curves are provided which show the allowable ESR range as a function of load current forvariousoutputvoltagesandcapacitorvalues(refertoFigure36,Figure37,Figure38,andFigure39). NOTE Important: The output capacitor must maintain its ESR in the stable region over the full operating temperature range to ensure stability. Also, capacitor tolerance and variation with temperature must be considered to ensure the minimum amount of capacitance is providedatalltimes. This capacitor should be located not more than 0.5 inches from the OUT pin of the LP2981-N and returned to a cleananalogground. 8.2.2.2 CapacitorCharacteristics 8.2.2.2.1 Tantalum Tantalum capacitors are the best choice for use with the LP2981-N. Most good quality tantalums can be used withtheLP2981-N,butcheckthemanufacturer'sdatasheettobesuretheESRisinrange. It is important to remember that ESR increases at lower temperatures and a capacitor that is near the upper limit forstabilityatroomtemperaturecancauseinstabilitywhenitgetscold. In applications which must operate at very low temperatures, it may be necessary to parallel the output tantalum capacitor with a ceramic capacitor to prevent the ESR from going up too high (see below for important informationonceramiccapacitors). 8.2.2.2.2 Ceramic Ceramic capacitors are not recommended for use at the output of the LP2981-N. This is because the ESR of a ceramic can be low enough to go below the minimum stable value for the LP2981-N. A 2.2-μF ceramic was measuredandfoundtohaveanESRofabout15mΩ,whichislowenoughtocauseoscillations. Ifaceramiccapacitorisusedontheoutput,a1-Ω resistorshouldbeplacedinserieswiththecapacitor. 8.2.2.2.3 Aluminum Because of large physical size, aluminum electrolytics are not typically used with the LP2981-N. They must meet the same ESR requirements over the operating temperature range, more difficult because of their steep increase atcoldtemperature. An aluminum electrolytic can exhibit an ESR increase of as much as 50x when going from 20°C to −40°C. Also, somealuminumelectrolyticsarenotoperationalbelow−25°Cbecausetheelectrolytecanfreeze. 8.2.2.3 ReverseCurrentPath The internal PNP power transistor used as the pass element in the LP2981-N has an inherent diode connected between the regulator output and input. During normal operation (where the input voltage is higher than the output)thisdiodeisreversebiased(SeeFigure34). Copyright©2000–2016,TexasInstrumentsIncorporated SubmitDocumentationFeedback 17 ProductFolderLinks:LP2981-N

LP2981-N SNOS773N–MARCH2000–REVISEDAPRIL2016 www.ti.com LP2981-N VIN VOUT PNP GND Figure34. LP2981-NReverseCurrentPath However, if the input voltage is more than a V below the output voltage, this diode will turn ON and current will BE flow into the regulator output. In such cases, a parasitic SCR can latch which will allow a high current to flow into theV pinandoutthegroundpin,whichcandamagethepart. IN The internal diode can also be turned on if the input voltage is abruptly stepped down to a voltage which is a V BE belowtheoutputvoltage. In any application where the output voltage may be higher than the input voltage, an external Schottky diode must be connected from V to V (cathode on V , anode on V ; see Figure 35), to limit the reverse voltage IN OUT IN OUT acrosstheLP2981-Nto0.3V(seeAbsoluteMaximumRatings). SCHOTTKY DIODE LP2981-N VIN VOUT PNP GND Figure35. AddingExternalSchottkyDiodeProtection 8.2.2.4 ONandOFFInputOperation The LP2981-N is shut off by pulling the ON/OFF input low, and turned on by driving the input high. If this feature is not to be used, the ON/OFF input should be tied to V to keep the regulator on at all times (the ON/OFF input IN mustnotbeleftfloating). To ensure proper operation, the signal source used to drive the ON/OFF input must be able to swing above and below the specified turnon/turnoff voltage thresholds which specify an ON or OFF state (see Electrical Characteristics). 18 SubmitDocumentationFeedback Copyright©2000–2016,TexasInstrumentsIncorporated ProductFolderLinks:LP2981-N

LP2981-N www.ti.com SNOS773N–MARCH2000–REVISEDAPRIL2016 The ON/OFF signal may come from either a totem-pole output, or an open-collector output with pullup resistor to the LP2981-N input voltage or another logic supply. The high-level voltage may exceed the LP2981-N input voltage,butmustremainwithintheAbsoluteMaximumRatings fortheON/OFF pin. It is also important that the turnon/turnoff voltage signals applied to the ON/OFF input have a slew rate which is greaterthan40mV/μs. NOTE IMPORTANT: The regulator shutdown function will not operate correctly if a slow-moving signalisappliedtotheON/OFF input. 8.2.3 ApplicationCurves Figure36.5-V,3.3-μFESRCurves Figure37.5-V,10-μFESRCurves Figure38.3-V,3.3-μFESRCurves Figure39.3-V,10-μFESRCurves Copyright©2000–2016,TexasInstrumentsIncorporated SubmitDocumentationFeedback 19 ProductFolderLinks:LP2981-N

LP2981-N SNOS773N–MARCH2000–REVISEDAPRIL2016 www.ti.com 9 Power Supply Recommendations The LP2981-N is designed to operate from an input voltage supply range between 2.1 V and 16 V. The input voltage range provides adequate headroom for the device to have a regulated output. This input supply must be well regulated. If the input supply is noisy, additional input capacitors with low ESR can help improve the output noiseperformance. 10 Layout 10.1 Layout Guidelines For best overall performance, place all circuit components on the same side of the circuit board and as near as practical to the respective LDO pin connections. Place ground return connections to the input and output capacitors,andtotheLDOgroundpinasclosetoeachotheraspossible,connectedbyawide,component-side, copper surface. The use of vias and long traces to create LDO circuit connections is strongly discouraged and negatively affects system performance. This grounding and layout scheme minimizes inductive parasitics, and thereby reduces load-current transients, minimizes noise, and increases circuit stability. A ground reference plane is also recommended and is either embedded in the PCB itself or located on the bottom side of the PCB opposite the components. This reference plane serves to assure accuracy of the output voltage, shield noise, and behaves similar to a thermal plane to spread (or sink) heat from the LDO device. In most applications, this groundplaneisnecessarytomeetthermalrequirements. 10.2 Layout Example V V IN OUT Input IN OUT Output Capacitor Capacitor GND Ground ON/OFF ON/OFF NC Figure40. LP2981-NLayoutExample 20 SubmitDocumentationFeedback Copyright©2000–2016,TexasInstrumentsIncorporated ProductFolderLinks:LP2981-N

LP2981-N www.ti.com SNOS773N–MARCH2000–REVISEDAPRIL2016 11 Device and Documentation Support 11.1 Third-Party Products Disclaimer TI'S PUBLICATION OF INFORMATION REGARDING THIRD-PARTY PRODUCTS OR SERVICES DOES NOT CONSTITUTE AN ENDORSEMENT REGARDING THE SUITABILITY OF SUCH PRODUCTS OR SERVICES OR A WARRANTY, REPRESENTATION OR ENDORSEMENT OF SUCH PRODUCTS OR SERVICES, EITHER ALONEORINCOMBINATIONWITHANYTIPRODUCTORSERVICE. 11.2 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. 11.3 Trademarks E2EisatrademarkofTexasInstruments. Allothertrademarksarethepropertyoftheirrespectiveowners. 11.4 Electrostatic Discharge Caution Thesedeviceshavelimitedbuilt-inESDprotection.Theleadsshouldbeshortedtogetherorthedeviceplacedinconductivefoam duringstorageorhandlingtopreventelectrostaticdamagetotheMOSgates. 11.5 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 21 ProductFolderLinks:LP2981-N

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) LP2981AIM5-2.5 NRND SOT-23 DBV 5 1000 TBD Call TI Call TI -40 to 125 L0CA LP2981AIM5-2.5/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 125 L0CA & no Sb/Br) LP2981AIM5-3.0/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 125 L05A & no Sb/Br) LP2981AIM5-3.3 NRND SOT-23 DBV 5 1000 TBD Call TI Call TI -40 to 125 L04A LP2981AIM5-3.3/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 125 L04A & no Sb/Br) LP2981AIM5-3.6/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 125 L0JA & no Sb/Br) LP2981AIM5-5.0 NRND SOT-23 DBV 5 1000 TBD Call TI Call TI -40 to 125 L03A LP2981AIM5-5.0/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 125 L03A & no Sb/Br) LP2981AIM5X-3.0/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 125 L05A & no Sb/Br) LP2981AIM5X-3.3/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 125 L04A & no Sb/Br) LP2981AIM5X-3.6/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 125 L0JA & no Sb/Br) LP2981AIM5X-5.0/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 125 L03A & no Sb/Br) LP2981IM5-2.5 NRND SOT-23 DBV 5 1000 TBD Call TI Call TI -40 to 125 L0CB LP2981IM5-2.5/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 125 L0CB & no Sb/Br) LP2981IM5-3.0/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 125 L05B & no Sb/Br) LP2981IM5-3.3 NRND SOT-23 DBV 5 1000 TBD Call TI Call TI -40 to 125 L04B LP2981IM5-3.3/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 125 L04B & no Sb/Br) LP2981IM5-3.6/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 125 L0JB & no Sb/Br) LP2981IM5-5.0 NRND SOT-23 DBV 5 1000 TBD Call TI Call TI -40 to 125 L03B 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) LP2981IM5-5.0/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS SN Level-1-260C-UNLIM -40 to 125 L03B & no Sb/Br) LP2981IM5X-3.0/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 125 L05B & no Sb/Br) LP2981IM5X-3.3/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 125 L04B & no Sb/Br) LP2981IM5X-3.6/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 125 L0JB & no Sb/Br) LP2981IM5X-5.0 NRND SOT-23 DBV 5 3000 TBD Call TI Call TI -40 to 125 L03B LP2981IM5X-5.0/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS SN Level-1-260C-UNLIM -40 to 125 L03B & 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. (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. Addendum-Page 2

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 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) LP2981AIM5-2.5 SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981AIM5-2.5/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981AIM5-3.0/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981AIM5-3.3 SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981AIM5-3.3/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981AIM5-3.6/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981AIM5-5.0 SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981AIM5-5.0/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981AIM5X-3.0/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981AIM5X-3.3/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981AIM5X-3.6/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981AIM5X-5.0/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981IM5-2.5 SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981IM5-2.5/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981IM5-3.0/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981IM5-3.3 SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981IM5-3.3/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981IM5-3.6/NOPB SOT-23 DBV 5 1000 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) LP2981IM5-5.0 SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981IM5-5.0/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981IM5X-3.0/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981IM5X-3.3/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981IM5X-3.6/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981IM5X-5.0 SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LP2981IM5X-5.0/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 *Alldimensionsarenominal Device PackageType PackageDrawing Pins SPQ Length(mm) Width(mm) Height(mm) LP2981AIM5-2.5 SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2981AIM5-2.5/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2981AIM5-3.0/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2981AIM5-3.3 SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2981AIM5-3.3/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2981AIM5-3.6/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2981AIM5-5.0 SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2981AIM5-5.0/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2981AIM5X-3.0/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LP2981AIM5X-3.3/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 PackMaterials-Page2

PACKAGE MATERIALS INFORMATION www.ti.com 29-Sep-2019 Device PackageType PackageDrawing Pins SPQ Length(mm) Width(mm) Height(mm) LP2981AIM5X-3.6/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LP2981AIM5X-5.0/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LP2981IM5-2.5 SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2981IM5-2.5/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2981IM5-3.0/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2981IM5-3.3 SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2981IM5-3.3/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2981IM5-3.6/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2981IM5-5.0 SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2981IM5-5.0/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LP2981IM5X-3.0/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LP2981IM5X-3.3/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LP2981IM5X-3.6/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LP2981IM5X-5.0 SOT-23 DBV 5 3000 210.0 185.0 35.0 LP2981IM5X-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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