LM2825 www.ti.com SNVS127C–MAY1997–REVISEDAPRIL2013 LM2825 Integrated Power Supply 1A DC-DC Converter CheckforSamples:LM2825 FEATURES DESCRIPTION 1 • MinimumDesignTimeRequired The LM2825 is a complete 1A DC-DC Buck converter packagedina24-leadmoldedDual-In-Lineintegrated • 3.3V,5Vand12VFixedOutputVersions circuitpackage. • TwoAdjustableVersionsAllow1.23Vto15V Contained within the package are all the active and Outputs passive components for a high efficiency step-down • WideInputVoltageRange,upto40V (buck) switching regulator. Available in fixed output • Low-PowerStandbyMode,I Typically65μA voltages of 3.3V, 5V and 12V, as well as two Q adjustable versions, these devices can provide up to • HighEfficiency,Typically80% 1A of load current with fully ensured electrical • ±4%OutputVoltageTolerance specifications. • ExcellentLineandLoadRegulation Self-contained, this converter is also fully protected • TTLShutdownCapability/ProgrammableSoft- from output fault conditions, such as excessive load Start current,shortcircuits,orexcessivetemperatures. • ThermalShutdownandCurrentLimit Protection • −40°Cto+85°CAmbientTemperatureRange APPLICATIONS • SimpleHigh-EfficiencyStep-Down(Buck) Regulator • On-CardSwitchingRegulators • EfficientPre-RegulatorforLinearRegulators Standard Application • DistributedPowerSystems (Fixedoutputvoltageversions) • DC/DCModuleReplacement HIGHLIGHTS • NoExternalComponentsRequired(Fixed OutputVoltageVersions) • IntegratedCircuitReliability • MTBFOver20MillionHours • RadiatedEMIMeetsClassBStipulatedby Radiated EMI CISPR22 Radiated emission of electromagnetic fields is • HighPowerDensity,35W/in3 measured at 10m distance. The emission levels are • 24-pinPDIPPackageProfile(1.25x0.54x0.26 withintheClassBlimitsstipulatedbyCISPR22. Inches) 30....230MHz 30dBμV/m 230....1000MHz 37dBμV/m 1....10GHz 46dBμV/m 1 Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet. PRODUCTIONDATAinformationiscurrentasofpublicationdate. Copyright©1997–2013,TexasInstrumentsIncorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarilyincludetestingofallparameters.

LM2825 SNVS127C–MAY1997–REVISEDAPRIL2013 www.ti.com Connection Diagram “NC(Donotuse)”pins:SeeFigure25 Figure1. PDIPPackage TopView SeePackageNumberNFL Thesedeviceshavelimitedbuilt-inESDprotection.Theleadsshouldbeshortedtogetherorthedeviceplacedinconductivefoam duringstorageorhandlingtopreventelectrostaticdamagetotheMOSgates. Absolute Maximum Ratings(1)(2) MaximumInputSupply(V ) +45V IN SD/SSPinInputVoltage(3) 6V OutputPinVoltage (3.3V,5.0VandADJ) −1V≤V≤9V (12VandH-ADJ) −1V≤V≤16V ADJPinVoltage(ADJ,H-ADJonly) −0.3V≤V≤25V PowerDissipation InternallyLimited StorageTemperatureRange −40°Cto+125°C ESDSusceptibility HumanBodyModel(4) 2kV LeadTemperature(Soldering10sec.) 260°C (1) AbsoluteMaximumRatingsindicatelimitsbeyondwhichdamagetothedevicemayoccur.OperatingRatingsindicateconditionsfor whichthedeviceisintendedtobefunctional,butdonotensurespecificperformancelimits.Forensuredspecificationsandtest conditions,seetheElectricalCharacteristics. (2) IfMilitary/Aerospacespecifieddevicesarerequired,pleasecontacttheTexasInstrumentsSalesOffice/Distributorsforavailabilityand specifications. (3) Voltageinternallyclamped.Ifclampvoltageisexceeded,limitcurrenttoamaximumof5mA. (4) Thehumanbodymodelisa100pFcapacitordischargedthrougha1.5kresistorintoeachpin. Operating Ratings AmbientTemperatureRange −40°C≤T ≤+85°C A JunctionTemperatureRange −40°C≤T ≤+125°C J InputSupplyVoltage(3.3Vversion) 4.75Vto40V InputSupplyVoltage(5Vversion) 7Vto40V InputSupplyVoltage(12Vversion) 15Vto40V InputSupplyVoltage(-ADJ,H-ADJ) 4.5Vto40V 2 SubmitDocumentationFeedback Copyright©1997–2013,TexasInstrumentsIncorporated ProductFolderLinks:LM2825

LM2825 www.ti.com SNVS127C–MAY1997–REVISEDAPRIL2013 LM2825-3.3 Electrical Characteristics(1) SpecificationswithstandardtypefaceareforT =25°C,andthosewithboldfacetypeapplyoverfullOperating A TemperatureRange.TestCircuit,seeFigure17. Symbol Parameter Conditions LM2825-3.3 Units Typical(2) Limit(3) (Limits) V OutputVoltage 4.75V≤V ≤40V,0.1A≤I ≤1A 3.3 V OUT IN LOAD 3.168/3.135 V(min) 3.432/3.465 V(max) LineRegulation 4.75V≤V ≤40V 1.5 mV IN I =100mA LOAD LoadRegulation 0.1A≤I ≤1A 8 mV LOAD V =12V IN OutputRippleVoltage V =12V,I =1A 40 mVp-p IN LOAD η Efficiency V =12V,I =0.5A 75 % IN LOAD (1) WhentheLM2825isusedasshowninFigure17testcircuit,systemperformancewillbeasshowninElectricalCharacteristics. (2) Typicalnumbersareat25°Candrepresentthemostlikelynorm. (3) Alllimitsensuredatroomtemperature(standardtypeface)andattemperatureextremes(boldtypeface)whenoutputcurrentislimited tothevaluegiveninthetemperaturederatingcurves.SeetheApplicationInformationsectionforcurves.Alllimitsattemperature extremesareensuredusingstandardStatisticalQualityControl(SQC)methods.AlllimitsareusedtocalculateAverageOutgoing QualityLevel(AOQL). LM2825-5.0 Electrical Characteristics(1) SpecificationswithstandardtypefaceareforT =25°C,andthosewithboldfacetypeapplyoverfullOperating A TemperatureRange.TestCircuit,seeFigure17. Symbol Parameter Conditions LM2825-5.0 Units Typical(2) Limit(3) (Limits) V OutputVoltage 7V≤V ≤40V,0.1A≤I ≤1A 5.0 V OUT IN LOAD 4.800/4.750 V(min) 5.200/5.250 V(max) LineRegulation 7V≤V ≤40V 2.7 mV IN I =100mA LOAD LoadRegulation 0.1A≤I ≤1A 8 mV LOAD V =12V IN OutputRippleVoltage V =12V,I =1A 40 mVp-p IN LOAD η Efficiency V =12V,I =0.5A 80 % IN LOAD (1) WhentheLM2825isusedasshowninFigure17testcircuit,systemperformancewillbeasshowninElectricalCharacteristics. (2) Typicalnumbersareat25°Candrepresentthemostlikelynorm. (3) Alllimitsensuredatroomtemperature(standardtypeface)andattemperatureextremes(boldtypeface)whenoutputcurrentislimited tothevaluegiveninthetemperaturederatingcurves.SeetheApplicationInformationsectionforcurves.Alllimitsattemperature extremesareensuredusingstandardStatisticalQualityControl(SQC)methods.AlllimitsareusedtocalculateAverageOutgoing QualityLevel(AOQL). Copyright©1997–2013,TexasInstrumentsIncorporated SubmitDocumentationFeedback 3 ProductFolderLinks:LM2825

LM2825 SNVS127C–MAY1997–REVISEDAPRIL2013 www.ti.com LM2825-12 Electrical Characteristics(1) SpecificationswithstandardtypefaceareforT =25°C,andthosewithboldfacetypeapplyoverfullOperating A TemperatureRange.TestCircuit,seeFigure17. Symbol Parameter Conditions LM2825-12 Units Typical(2) Limit(3) (Limits) V OutputVoltage 15V≤V ≤40V,0.1A≤I ≤0.75A 12.0 V OUT IN LOAD 11.52/11.40 V(min) 12.48/12.60 V(max) LineRegulation 15V≤V ≤40V 8.5 mV IN I =100mA LOAD LoadRegulation 0.1A≤I ≤0.75A 12 mV LOAD V =24V IN OutputRippleVoltage V =24V,I =1A 100 mVp-p IN LOAD η Efficiency V =24V,I =0.5A 87 % IN LOAD (1) WhentheLM2825isusedasshowninFigure17testcircuit,systemperformancewillbeasshowninElectricalCharacteristics. (2) Typicalnumbersareat25°Candrepresentthemostlikelynorm. (3) Alllimitsensuredatroomtemperature(standardtypeface)andattemperatureextremes(boldtypeface)whenoutputcurrentislimited tothevaluegiveninthetemperaturederatingcurves.SeetheApplicationInformationsectionforcurves.Alllimitsattemperature extremesareensuredusingstandardStatisticalQualityControl(SQC)methods.AlllimitsareusedtocalculateAverageOutgoing QualityLevel(AOQL). LM2825-ADJ Electrical Characteristics(1) SpecificationswithstandardtypefaceareforT =25°C,andthosewithboldfacetypeapplyoverfullOperating A TemperatureRange.TestCircuit,seeFigure18. Symbol Parameter Conditions LM2825-ADJ Units Typical(2) Limit(3) (Limits) V AdjustPinVoltage 4.5V≤V ≤40V,0.1A≤I ≤1A 1.230 V ADJ IN LOAD 1.23V≤V ≤8V 1.193/1.180 V(min) OUT 1.267/1.280 V(max) η Efficiency V =12V,I =0.5A 74 % IN LOAD V Programmedfor3V.SeeCircuitofFigure18 OUT (1) WhentheLM2825isusedasshowninFigure18testcircuit,systemperformancewillbeasshowninElectricalCharacteristics. (2) Typicalnumbersareat25°Candrepresentthemostlikelynorm. (3) Alllimitsensuredatroomtemperature(standardtypeface)andattemperatureextremes(boldtypeface)whenoutputcurrentislimited tothevaluegiveninthetemperaturederatingcurves.SeetheApplicationInformationsectionforcurves.Alllimitsattemperature extremesareensuredusingstandardStatisticalQualityControl(SQC)methods.AlllimitsareusedtocalculateAverageOutgoing QualityLevel(AOQL). LM2825H-ADJ Electrical Characteristics(1) SpecificationswithstandardtypefaceareforT =25°C,andthosewithboldfacetypeapplyoverfullOperating A TemperatureRange.TestCircuit,seeFigure18. Symbol Parameter Conditions LM2825H-ADJ Units Typical(2) Limit(3) (Limits) V AdjustPinVoltage 9V≤V ≤40V,0.1A≤I ≤0.55A 1.230 V ADJ IN LOAD 7V≤V ≤15V 1.193/1.180 V(min) OUT 1.267/1.280 V(max) η Efficiency V =24V,I =0.5A 87 % IN LOAD V Programmedfor12V.SeeCircuitofFigure18 OUT (1) WhentheLM2825isusedasshowninFigure18testcircuit,systemperformancewillbeasshowninElectricalCharacteristics. (2) Typicalnumbersareat25°Candrepresentthemostlikelynorm. (3) Alllimitsensuredatroomtemperature(standardtypeface)andattemperatureextremes(boldtypeface)whenoutputcurrentislimited tothevaluegiveninthetemperaturederatingcurves.SeetheApplicationInformationsectionforcurves.Alllimitsattemperature extremesareensuredusingstandardStatisticalQualityControl(SQC)methods.AlllimitsareusedtocalculateAverageOutgoing QualityLevel(AOQL). 4 SubmitDocumentationFeedback Copyright©1997–2013,TexasInstrumentsIncorporated ProductFolderLinks:LM2825

LM2825 www.ti.com SNVS127C–MAY1997–REVISEDAPRIL2013 All Output Voltage Versions Electrical Characteristics SpecificationswithstandardtypefaceareforT =25°C,andthosewithboldfacetypeapplyoverfullOperatingRange. A Unlessotherwisespecified,V =12Vfor3.3V,5.0VandADJversions,V =24Vfor12VandH-ADJversions,I =100 IN IN LOAD mA. Symbol Parameter Conditions LM2825-XX Units Typical(1) Limit(2) (Limits) I DCOutputCurrentLimit R =0Ω 1.4 A CL L 1.2 A(min) 2.4 A(max) I OperatingQuiescent SD/SSPin=3.1V(3) 5 mA Q Current 10 mA(max) I StandbyQuiescent SD/SSPin=0V(3) 65 μA STBY Current 200 μA(max) I AdjustPinBiasCurrent AdjustableVersionsOnly,V =1.3V 6 nA ADJ FB 50/100 nA(max) f OscillatorFrequency See(4) 150 kHz O θ ThermalResistance JunctiontoAmbient(5) 30 °C/W JA SHUTDOWN/SOFT-STARTCONTROLTestCircuit,seeFigure17 V ShutdownThreshold 1.3 V SD Voltage Low(ShutdownMode) 0.6 V(max) High(Soft-startMode) 2.0 V(min) V Soft-startVoltage V =20%ofNominalOutputVoltage 2 V SS OUT V =100%ofNominalOutputVoltage 3 OUT I ShutdownCurrent V =0.5V(3) 5 μA SD SHUTDOWN 10 μA(max) I Soft-startCurrent V =2.5V(3) 1.6 μA SS SOFT-START 5 μA(max) (1) Typicalnumbersareat25°Candrepresentthemostlikelynorm. (2) Alllimitsensuredatroomtemperature(standardtypeface)andattemperatureextremes(boldtypeface)whenoutputcurrentislimited tothevaluegiveninthetemperaturederatingcurves.SeetheApplicationInformationsectionforcurves.Alllimitsattemperature extremesareensuredusingstandardStatisticalQualityControl(SQC)methods.AlllimitsareusedtocalculateAverageOutgoing QualityLevel(AOQL). (3) I =0A. LOAD (4) Theswitchingfrequencyisreducedwhenthesecondstagecurrentlimitisactivated.Theamountofreductionisdeterminedbythe severityofcurrentoverload. (5) Junctiontoambientthermalresistance(noexternalheatsink)forthePDIPpackagewiththeleadssolderedtoaprintedcircuitboard with(1oz.)copperareaofapproximately2in2. Copyright©1997–2013,TexasInstrumentsIncorporated SubmitDocumentationFeedback 5 ProductFolderLinks:LM2825

LM2825 SNVS127C–MAY1997–REVISEDAPRIL2013 www.ti.com Typical Performance Characteristics (CircuitsofFigure17andFigure18)Unlessotherwisespecified,V =12Vfor3.3V,5.0VandADJversions,V =24Vfor IN IN 12VandH-ADJversions,I =100mA,T =25°C LOAD A NormalizedOutputVoltage Efficiency Figure2. Figure3. DropoutVoltage LineRegulation Figure4. Figure5. LoadRegulation OutputRippleVoltage Figure6. Figure7. 6 SubmitDocumentationFeedback Copyright©1997–2013,TexasInstrumentsIncorporated ProductFolderLinks:LM2825

LM2825 www.ti.com SNVS127C–MAY1997–REVISEDAPRIL2013 Typical Performance Characteristics (continued) (CircuitsofFigure17andFigure18)Unlessotherwisespecified,V =12Vfor3.3V,5.0VandADJversions,V =24Vfor IN IN 12VandH-ADJversions,I =100mA,T =25°C LOAD A OperatingQuiescentCurrent ShutdownQuiescentCurrent Figure8. Figure9. SwitchingFrequency Soft-start Figure10. Figure11. Shutdown/Soft-startCurrent Soft-startResponse Figure12. Figure13. Copyright©1997–2013,TexasInstrumentsIncorporated SubmitDocumentationFeedback 7 ProductFolderLinks:LM2825

LM2825 SNVS127C–MAY1997–REVISEDAPRIL2013 www.ti.com Typical Performance Characteristics (continued) (CircuitsofFigure17andFigure18)Unlessotherwisespecified,V =12Vfor3.3V,5.0VandADJversions,V =24Vfor IN IN 12VandH-ADJversions,I =100mA,T =25°C LOAD A SwitchCurrentLimit AdjustPinBiasCurrent Figure14. Figure15. LoadTransientResponseforContinuousMode LoadTransientResponseforDiscontinuousMode V =20V,V =5V,I =250mAto750mA V =20V,V =5V,I =40mAto140mA IN OUT L IN OUT L A:OutputVoltage100mV/div(AC) A:OutputVoltage100mV/div(AC) B:250mAto750mALoadPulse B:40mAto140mALoadPulse HorizontalTimeBase:200μs/div HorizontalTimeBase:200μs/div Figure16. TypicalLoadTransientResponse 8 SubmitDocumentationFeedback Copyright©1997–2013,TexasInstrumentsIncorporated ProductFolderLinks:LM2825

LM2825 www.ti.com SNVS127C–MAY1997–REVISEDAPRIL2013 Test Circuit *Optional—Requiredifpackageismorethan6″awayfrommainfilterorbypasscapacitor. **OptionalSoft-startCapacitor V =40V(max) IN V =3.3Vor5V@1Aor12V@0.75A OUT Figure17. StandardTestCircuit (FixedOutputVoltageVersions) *Optional—Requiredifpackageismorethan6″awayfrommainfilterorbypasscapacitor. **OptionalSoft-startCapacitor ***Optional—SeeApplicationInformation. V =40V(max) IN V =1.23Vto8V(LM2825-ADJ) OUT 7Vto15V(LM2825H-ADJ) I =I (SeederatingcurvesinApplicationInformation) LOAD MAX Figure18. StandardTestCircuit (AdjustableOutputVoltageVersions) Copyright©1997–2013,TexasInstrumentsIncorporated SubmitDocumentationFeedback 9 ProductFolderLinks:LM2825

LM2825 SNVS127C–MAY1997–REVISEDAPRIL2013 www.ti.com APPLICATION INFORMATION PROGRAMMING OUTPUT VOLTAGE (SelectingR1andR2asshowninFigure18) The LM2825 is available in two adjustable output versions. The LM2825-ADJ has been optimized for output voltages between 1.23V and 8V, while the LM2825H-ADJ covers the output voltage range of 7V to 15V. Both adjustableversionsaresetinthefollowingway. (1) SelectavalueforR1between240Ω and1.5kΩ.Thelowerresistorvaluesminimizenoisepickupatthesensitive adjustpin.(Forlowesttemperaturecoefficientandthebeststabilitywithtime,use1%metalfilmresistors.) SelectR2withthefollowingequation. (2) WhenprogrammingV ,keepinmindthatV mustbegreaterthanV +2Vforproperoperation. OUT IN OUT OPTIONAL EXTERNAL COMPONENTS SOFT-STARTCAPACITOR C : A capacitor on this pin provides the regulator with a Soft-start feature (slow start-up). The current drawn SS from the source starts out at a low average level with narrow pulses, and ramps up in a controlled manner as the pulses expand to their steady-state width. This reduces the startup current considerably, and delays and slows downtheoutputvoltagerisetime. It is especially useful in situations where the input power source is limited in the amount of current it can deliver, sinceyouavoidloadingdownthistypeofpowersupply. Under some operating conditions, a Soft-start capacitor is required for proper operation. Figure 19 indicates the inputvoltageandambienttemperatureconditionsforwhichaSoft-startcapacitormayberequired. This curve is typical for full ensured output current and can be used as a guideline. As the output current decreases, the operating area requiring a Soft-start capacitor decreases. Capacitor values between 0.1 μF and 1 μFarerecommended.Tantalumorceramiccapacitorsareappropriateforthisapplication. INPUTCAPACITOR C : An optional input capacitor is required if the package is more than 6″ away from the main filter or bypass IN capacitor. A low ESR aluminum or tantalum bypass capacitor is recommended between the input pin and ground to prevent large voltage transients from appearing at the input. In addition, to be conservative, the RMS current rating of the input capacitor should be selected to be at least ½ the DC load current. With a 1A load, a capacitor withaRMScurrentratingofatleast500mAisrecommended. The voltage rating should be approximately 1.25 times the maximum input voltage. With a nominal input voltage of 12V, an aluminum electrolytic capacitor (Panasonic HFQ series or Nichicon PL series or equivalent) with a voltageratinggreaterthan15V(1.25× V )wouldbeneeded. IN Solid tantalum input capacitors should only be used where the input source is impedance current limited. High dV/dt applied at the input can cause excessive charge current through low ESR tantalum capacitors. This high charge current can result in shorting within the capacitor. It is recommended that they be surge current tested by the manufacturer.The TPS series available from AVX, and the 593D series from Sprague are both surge current tested. Usecautionwhenusingceramiccapacitorsforinputbypassing,becauseitmaycauseringingattheV pin. IN 10 SubmitDocumentationFeedback Copyright©1997–2013,TexasInstrumentsIncorporated ProductFolderLinks:LM2825

LM2825 www.ti.com SNVS127C–MAY1997–REVISEDAPRIL2013 LOWERING OUTPUT RIPPLE Whenusingtheadjustableparts,onecanachieveloweroutputripplevoltagebyshortingaresistorinternaltothe LM2825. However, if this resistor is shorted, a feed forward capacitor must be used to keep the regulator stable. For this reason, this resistor must be left open on all of the fixed output voltage versions or instability will result. See the FEED FORWARD CAPACITOR SELECTION (C ) selection below. Shorting the internal resistor is FF accomplishedbyshortingpins8and9ontheLM2825,andwilltypicallyreduceoutputrippleby25to33%. FEED FORWARD CAPACITOR SELECTION (C ) FF When using an adjustable part and pins 8 and 9 are shorted to reduce output ripple, a feed forward capacitor is required. This capacitor is typically between 680 pF and 2700 pF. Table 1 shows the value for C for a given FF outputvoltageandfeedbackresistorR (R1=1kΩ). 2 Table1.C SelectionTable FF V R2 C OUT FF LM2825-ADJ 2 630 N/A 3 1.43k N/A 4 2.26k 2700pF 5 3.09k 2700pF 6 3.92k 2200pF 7 4.75k 1800pF 8 5.49k 1500pF LM2825H-ADJ 7 4.75k 2700pF 8 5.49k 2200pF 9 6.34k 1800pF 10 7.15k 1500pF 11 8.06k 1000pF 12 8.87k 820pF 13 9.53k 680pF 14 10.5k 680pF 15 11.3k 680pF SHUTDOWN ThecircuitshowninFigure24shows2circuitsfortheShutdown/Soft-startfeatureusingdifferentlogicsignalsfor shutdownandusinga0.1μFSoft-startcapacitor. THERMAL CONSIDERATIONS The LM2825 is available in a 24-pin through hole PDIP. The package is molded plastic with a copper lead frame. WhenthepackageissolderedtothePCboard,thecopperandtheboardaretheheatsinkfortheLM2825. Copyright©1997–2013,TexasInstrumentsIncorporated SubmitDocumentationFeedback 11 ProductFolderLinks:LM2825

LM2825 SNVS127C–MAY1997–REVISEDAPRIL2013 www.ti.com Figure19. UsageoftheSoft-startCapacitor OUTPUT CURRENT DERATING FOR T = −40°C to −25°C AND T = −25°C to 0°C J J Atthelowertemperatureextremes,theswitchcurrentlimitdropsoffsharply.Asaresult,aloweroutputcurrentis available in this temperature range. See Figure 20 and Figure 21 for the typical available output current at these temperatureranges. Figure20. LM2825OutputCurrentDeratingforT =−40°Cto−25°C J 12 SubmitDocumentationFeedback Copyright©1997–2013,TexasInstrumentsIncorporated ProductFolderLinks:LM2825

LM2825 www.ti.com SNVS127C–MAY1997–REVISEDAPRIL2013 Figure21. LM2825OutputCurrentDeratingforT =−25°Cto0°C J Copyright©1997–2013,TexasInstrumentsIncorporated SubmitDocumentationFeedback 13 ProductFolderLinks:LM2825

LM2825 SNVS127C–MAY1997–REVISEDAPRIL2013 www.ti.com OUTPUT CURRENT DERATING FOR T = 0°C to 70°C A Due to the limited switch current, the LM2825 cannot supply the full one ampere output current over the entire input and output voltage range. Figure 22 shows the typical available output current for any input and output voltagecombination.Thisappliesforalloutputvoltageversions. Figure22. LM2825OutputCurrentDeratingforT =0°Cto70°C A 14 SubmitDocumentationFeedback Copyright©1997–2013,TexasInstrumentsIncorporated ProductFolderLinks:LM2825

LM2825 www.ti.com SNVS127C–MAY1997–REVISEDAPRIL2013 OUTPUT CURRENT DERATING FOR T = 70°C to 85°C A At high these high ambient temperatures, the LM2825 cannot supply the full one ampere over the entire input and output voltage range. This is due to thermal reasons and Figure 23 shows the typical available output currentforanyinputandoutputvoltagecombination.Thisappliesforalloutputvoltageversions. Figure23. LM2825OutputCurrentDeratingforT =70°Cto85°C A Figure24. TypicalCircuitsUsingShutdown/Soft-startFeatures Copyright©1997–2013,TexasInstrumentsIncorporated SubmitDocumentationFeedback 15 ProductFolderLinks:LM2825

LM2825 SNVS127C–MAY1997–REVISEDAPRIL2013 www.ti.com TYPICAL THROUGH HOLE PC BOARD LAYOUT (2X SIZE), SINGLE SIDED, THROUGH HOLE PLATED Note:Holesarenotshown. “NoConnectPins”areconnectedtocopperpadsforthermalreasonsonlyandmustremainelectricallyisolated. Figure25. 2XPrintedCircuitBoardLayout 16 SubmitDocumentationFeedback Copyright©1997–2013,TexasInstrumentsIncorporated ProductFolderLinks:LM2825

LM2825 www.ti.com SNVS127C–MAY1997–REVISEDAPRIL2013 REVISION HISTORY ChangesfromRevisionB(April2013)toRevisionC Page • ChangedlayoutofNationalDataSheettoTIformat.......................................................................................................... 16 Copyright©1997–2013,TexasInstrumentsIncorporated SubmitDocumentationFeedback 17 ProductFolderLinks:LM2825

PACKAGE OPTION ADDENDUM www.ti.com 23-Sep-2013 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) (3) (4/5) LM2825HN-ADJ ACTIVE PDIP NFL 24 12 TBD Call TI Call TI -40 to 125 LM2825HN-ADJ ADJ, 1A OUTPUT LM2825HN-ADJ/NOPB ACTIVE PDIP NFL 24 12 Green (RoHS CU SN Level-1-NA-UNLIM -40 to 125 LM2825HN-ADJ & no Sb/Br) ADJ, 1A OUTPUT LM2825N-12 ACTIVE PDIP NFL 24 TBD Call TI Call TI -40 to 125 LM2825N-12 12V, 1A OUTPUT LM2825N-12/NOPB ACTIVE PDIP NFL 24 12 Green (RoHS CU SN Level-1-NA-UNLIM -40 to 125 LM2825N-12 & no Sb/Br) 12V, 1A OUTPUT LM2825N-3.3 ACTIVE PDIP NFL 24 TBD Call TI Call TI -40 to 125 LM2825N-3.3 3.3V, 1A OUTPUT LM2825N-3.3/NOPB ACTIVE PDIP NFL 24 12 Green (RoHS CU SN Level-1-NA-UNLIM -40 to 125 LM2825N-3.3 & no Sb/Br) 3.3V, 1A OUTPUT LM2825N-5.0 ACTIVE PDIP NFL 24 12 TBD Call TI Call TI -40 to 125 LM2825N-5.0 5.0V, 1A OUTPUT LM2825N-5.0/NOPB ACTIVE PDIP NFL 24 12 Green (RoHS CU SN Level-1-NA-UNLIM -40 to 125 LM2825N-5.0 & no Sb/Br) 5.0V, 1A OUTPUT LM2825N-ADJ ACTIVE PDIP NFL 24 12 TBD Call TI Call TI -40 to 125 LM2825N-ADJ ADJ, 1A OUTPUT LM2825N-ADJ/NOPB ACTIVE PDIP NFL 24 12 Green (RoHS CU SN Level-1-NA-UNLIM -40 to 125 LM2825N-ADJ & no Sb/Br) ADJ, 1A OUTPUT (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) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) Addendum-Page 1

PACKAGE OPTION ADDENDUM www.ti.com 23-Sep-2013 (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. 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 2

MECHANICAL DATA N0024F NA24F (Rev D) www.ti.com

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