1 Features 2 Applications 3 Description - TI.com

1 (%)OUTPUT CURRENT (A)VIN = 15 VVIN = 24 VVIN = 30 VVIN = 36 VVIN = 42 VVINCINE nableRONRFBTCFFCSSRFBBCOUTLMZ14203 HVOUTFBRONSSVINENGNDVOUTP roductFolderSample &BuyTechnicalDocumentsTools &SoftwareSupport &CommunityLMZ14203 HSNVS692G JANUARY2011 REVISEDOCTOBER2015 LMZ14203 HSIMPLESWITCHER 6V to 42V, 3A High OutputVoltagePowerModule1 Features2 Applications1 IntegratedShieldedInductor IntermediateBus Conversionsto 12-Vand 24-VRail SimplePCBL ayout Time-CriticalProjects FlexibleStart-UpSequencingUsingExternalS oft-Startand PrecisionEnable SpaceConstrainedand HighThermalRequirementApplications ProtectionAgainstInrushCurrents NegativeOutputVoltageApplications InputUVLOand OutputShort-CircuitProtection 40 C to 125 C JunctionTemperatureRange3 Description SingleExposedPad and StandardPinoutfor EasyTheLMZ14203 HSIMPLESWITCHER powerMountingand Manufacturingmoduleis an easy-to-usestep-downDC-DCsolution Low OutputVoltageRipplethat can driveup to 3-A loadwith exceptionalpowerconversionefficiency,lin e and loadregulation,and Pin-to- LMZ14203 His availablein an lmz14203h /2H/1H(42 V Maximum,3-A, 2-A,innovativepackagethatenhancesthermal 1-A)performanceandallowsfor handor machine LMZ14203/2/1(4 2V Maximum,3-A, 2-A, 1-A)soldering.

2 LMZ12003/2/1(20 V Maximum,3-A, 2-A, 1-A)TheLMZ14203 Hcanacceptan inputvoltagerail FullyEnabledfor WEBENCH PowerDesignerbetween6 V and 42 V and deliveran adjustableandhighlyaccurateoutputvoltage as low as 5 V. The ElectricalSpecificationsLMZ14203 Honlyrequiresthreeexternalresistors Up to 3-A OutputCurrentand four externalcapacitorsto completethe power InputVoltageRange6 V to 42 a reliableandrobustdesignwith the followingprotectionfeatures:thermal OutputVoltageas Low as 5 Vshutdown,inputundervoltagelockout,outpu t Efficiencyup to 97%overvoltageprotection,short-circuitpr otection,output PerformanceBenefitscurrentlimit,andallow sstart-upintoa prebiased singleresistoradjuststheswitchingfrequen cyup to 1 Low RadiatedEMI (EN 55022 ClassB Tested)DeviceInformation(1)(2) No CompensationRequiredPARTNUMBERPACKAGEBOD YSIZE(NOM) Low PackageThermalResistanceLMZ14203 HTO-PMOD(7) :EN 55022:2006,+A1:2007,FCCPart 15 SubpartB: 2007(1) For all availablepackages,see the orderableaddendumatthe end of the datasheet.

3 (2) Peakreflowtemperatureequals245 C. 12 V, TA= 25 C1An IMPORTANTNOTICEat the end of this datasheetaddressesavailability,warranty, changes,use in safety-criticalapplications,intellectual propertymattersand JANUARY2011 Contents1 Applicationand Pin Configurationand Deviceand Mechanical,Packaging,and RevisionHistoryNOTE:Pagenumbersfor previousrevisionsmay differfrompagenumbersin the (August2015)to RevisionGPage Addedthis new bulletto the (June2015)to RevisionFPage Changedthe title of the (October2013)to RevisionEPage AddedPin Configurationand Functionssection,ESDR atingstable,FeatureDescriptionsection,De viceFunctionalModes,Applicationand Implementationsection,PowerSupplyRecomme ndationssection,Layoutsection,Deviceand DocumentationSupportsection,andMechanica l,Packaging,and (June2011)to RevisionDPage AddedPeakReflowCaseTemp= 245 Changed10 2011 2015,TexasInstrumentsIncorporatedProduct FolderLinks:LMZ14203 HExposed Pad Connect to GND5 SS6 FB3 EN1 VIN2 RON4 GND7 JANUARY2011 REVISEDOCTOBER20155 Pin Configurationand FunctionsNDWP ackage7-PinTO-PMODTop ViewPin Additionalexternalinputcapacitanceis requiredbetweenthis pin and the exposedpad (EP).

4 ON-timeresistor An externalresistorfromVINto this pin sets the ON-timeand frequencyof Inputto the Referencepointfor all externallyconnectedto An internal8- A currentsourcechargesan externalcapacitorto producethe Internallyconnectedto the regulation,overvoltage,and V at this inputpin. Connectthe feedbackresistordividerbetweenthe outputand groundto set the Outputfromthe outputcapacitorbetweenthis pin and Internallyconnectedto pin 4. Usedto dissipateheatfromthe packageduringoperation. EPGroundMustbe electricallyconnectedto pin 4 externalto the (1)(2)(3)MINMAXUNITVIN,RONto GND , FB, SS to GND CPeakReflowCaseTemperature(30 s)245 CStorageTemperature 65150 C(1)If Military/Aerospacespecifieddevicesare required,pleasecontactthe TexasInstrumentsSalesOffice/Distributors for availabilityandspecifications.(2)Stresse sbeyondthoselistedunderAbsoluteMaximumRa tingsmay causepermanentdamageto the stressratingsonly,whichdo not implyfunctionaloperationof the deviceat theseor any otherconditionsbeyondthoseindicatedunder RecommendedOperatingConditions.

5 Exposureto absolute-maximum-ratedconditionsfor extendedperiodsmay affectdevicereliability.(3)For solderingspecifications,see the applicationnoteAbsoluteMaximumRatingsfor Soldering(SNOA549) (ESD)ElectrostaticdischargeHumanbodymode l(HBM),per ANSI/ESDA/JEDECJS-001(1) 2000V(1)JEDEC documentJEP155statesthat 500-VHBM allowssafe manufacturingwith a 2011 2015,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback3 ProductFolderLinks:LMZ14203 HLMZ14203 HSNVS692G JANUARY2011 40125 (1)NDW(TO-PMOD)UNIT7 PINS4 layerprinted-circuit-board, x (3 in x 3 in) area,1-ozcopper,no air flowR JAJunction-to-ambientthermalresistance C/W4 layerprinted-circuit-board, x ( in x in) area,1-ozcopper,no air flowR JC(top)Junction-to-case(top) C/W(1)For moreinformationabouttraditionaland new thermalmetrics,see theSemiconductorand IC PackageThermalMetricsapplicationreport, Maximumlimitsare ensuredthroughtest, designor mostlikelyparametricnormat TJ= 25 C, and are providedfor followingconditionsapply.

6 VIN= 24 V, VOUT= 12 V, RON= 249 k PARAMETERTESTCONDITIONSMIN(1)TYP(2)MAX(1 )UNITSYSTEMPARAMETERSENABLECONTROLVENEN thresholdtrip pointVENrising,TJ= 40 C to 125 thresholdhysteresis90mVSOFT-STARTISSSS sourcecurrentVSS= 0 V, TJ= 40 C to 125 C81015 AISS-DISSS dischargecurrent 200 ACURRENTLIMITICLC urrentlimit thresholdDC average,TJ= 40 C to 125 UVLOEN pin pin floatingVINUVLO-HYSTH ysteresis130mVVIN fallingON/OFFTIMERtON-MINON timerminimumpulsewidth150nstOFFOFF timerpulsewidth260ns(1)Minimumand Maximumlimitsare 100%productiontestedat 25 C. Limitsoverthe operatingtemperaturerangeare ensuredthroughcorrelationusingStatistica lQualityControl(SQC) usedto calculateNational s AverageOutgoingQualityLevel(AOQL).(2)Typ icalnumbersare at 25 C and representthe 2011 2015, JANUARY2011 REVISEDOCTOBER2015 ElectricalCharacteristics(continued)Mini mumand Maximumlimitsare ensuredthroughtest, designor mostlikelyparametricnormat TJ= 25 C, and are providedfor followingconditionsapply.

7 VIN= 24 V, VOUT= 12 V, RON= 249 k PARAMETERTESTCONDITIONSMIN(1)TYP(2)MAX(1 )UNITREGULATIONANDOVERVOLTAGECOMPARATORV IN= 24 V, VOUT= 12 VVSS>+ 40 C to 125 CIOUT= 10 mA to 3 AVFBIn-regulationfeedbackvoltageVVIN= 24 V, VOUT= 12 VVSS>+ 25 CIOUT= 10 mA to 3 AVIN= 36 V, VOUT= 24 VVSS>+ 40 C to 125 CIOUT= 10 mA to 3 AVFBIn-regulationfeedbackvoltageVVIN= 36 V, VOUT= 24 VVSS>+ 25 CIOUT= 10 mA to 3 current5nAIQN onswitchingInputCurrentVFB= 0 V25 ATHERMALCHARACTERISTICSTSDT hermalshutdown(rising)165 CTSD-HYSTT hermalshutdownhysteresis15 CPERFORMANCEPARAMETERS VOUTO utputVoltageRippleVOUT= 5 V, CO= 100- F VOUT/ VINLine RegulationVIN= 16 V to 42 V, IOUT= 3 VOUT/ IOUTLoadRegulationVIN= 24 V, IOUT= 0 A to 3 EfficiencyVIN= 24 V, VOUT= 12 V, IOUT= 1 A94% EfficiencyVIN= 24 V, VO= 12 V, IO= 3 A93%Copyright 2011 2015,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback5 (%)OUTPUT CURRENT (A)VIN = 24 VVIN = 30 VVIN = 36 VVIN = DISSIPATION (W)OUTPUT CURRENT (A)VIN = 24 VVIN = 30 VVIN = 36 VVIN = (%)OUTPUT CURRENT (A)VIN = 15 VVIN = 24 VVIN = 30 VVIN = 36 VVIN = DISSIPATION (W)OUTPUT CURRENT (A)VIN = 15 VVIN = 24 VVIN = 30 VVIN = 36 VVIN = (%)OUTPUT CURRENT (A)VIN = 8 VVIN = 12 VVIN = 24 VVIN = 36 VVIN = DISSIPATION (W)OUTPUT CURRENT (A)VIN = 8 VVIN = 12 VVIN = 24 VVIN = 36 VVIN = 42 VLMZ14203 HSNVS692G JANUARY2011 ,the followingconditionsapply:VIN= 24 V; Cin = 10-uFX7 RCeramic;CO= 47 uF; TA= 25 EfficiencyVOUT= 5 V, TA= 25 CFigure2.

8 PowerDissipationVOUT= 5 V, TA= 25 CFigure4. PowerDissipationVOUT= 12 V, TA= 25 CFigure3. EfficiencyVOUT= 12 V, TA= 25 CFigure5. EfficiencyVOUT= 15 V, TA= 25 CFigure6. PowerDissipationVOUT= 15 V, TA= 25 C6 SubmitDocumentationFeedbackCopyright 2011 2015, (%)OUTPUT CURRENT (A)VIN = 34 VVIN = 36 VVIN = DISSIPATION (W)OUTPUT CURRENT (A)VIN = 34 VVIN = 36 VVIN = (%)OUTPUT CURRENT (A)VIN = 28 VVIN = 30 VVIN = 36 VVIN = DISSIPATION (W)OUTPUT CURRENT (A)VIN = 28 VVIN = 30 VVIN = 36 VVIN = (%)OUTPUT CURRENT (A)VIN = 24 VVIN = 30 VVIN = 36 VVIN = DISSIPATION (W)OUTPUT CURRENT (A)VIN = 24 VVIN = 30 VVIN = 36 VVIN = JANUARY2011 REVISEDOCTOBER2015 TypicalCharacteristics(continued)Unlesso therwisespecified,the followingconditionsapply:VIN= 24 V; Cin = 10-uFX7 RCeramic;CO= 47 uF; TA= 25 EfficiencyVOUT= 18 V, TA= 25 CFigure8. PowerDissipationVOUT= 18 V, TA= 25 CFigure9. EfficiencyVOUT= 24 V, TA= 25 CFigure10. PowerDissipationVOUT= 24 V, TA= 25 CFigure11. EfficiencyVOUT= 30 V, TA= 25 CFigure12.

9 PowerDissipationVOUT= 30 V, TA= 25 CCopyright 2011 2015,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback7 (%)OUTPUT CURRENT (A)VIN = 24 VVIN = 30 VVIN = 36 VVIN = DISSIPATION (W)OUTPUT CURRENT (A)VIN = 24 VVIN = 30 VVIN = 36 VVIN = (%)OUTPUT CURRENT (A)VIN = 15 VVIN = 24 VVIN = 30 VVIN = 36 VVIN = DISSIPATION (W)OUTPUT CURRENT (A)VIN = 15 VVIN = 24 VVIN = 30 VVIN = 36 VVIN = (%)OUTPUT CURRENT (A)VIN = 8 VVIN = 12 VVIN = 24 VVIN = 36 VVIN = DISSIPATION (W)OUTPUT CURRENT (A)VIN = 8 VVIN = 12 VVIN = 24 VVIN = 36 VVIN = 42 VLMZ14203 HSNVS692G JANUARY2011 (continued)Unlessotherwisespecified,the followingconditionsapply:VIN= 24 V; Cin = 10-uFX7 RCeramic;CO= 47 uF; TA= 25 EfficiencyVOUT= 5 V, TA= 85 CFigure14. PowerDissipationVOUT= 5 V, TA= 85 CFigure15. EfficiencyVOUT= 12 V, TA= 85 CFigure16. PowerDissipationVOUT= 12 V, TA= 85 CFigure17. EfficiencyVOUT= 15 V, TA= 85 CFigure18. PowerDissipationVOUT= 15 V, TA= 85 C8 SubmitDocumentationFeedbackCopyright 2011 2015, (%)OUTPUT CURRENT (A)VIN = 34 VVIN = 36 VVIN = DISSIPATION (W)OUTPUT CURRENT (A)VIN = 34 VVIN = 36 VVIN = (%)OUTPUT CURRENT (A)VIN = 28 VVIN = 30 VVIN = 36 VVIN = DISSIPATION (W)OUTPUT CURRENT (A)VIN = 28 VVIN = 30 VVIN = 36 VVIN = (%)OUTPUT CURRENT (A)VIN = 24 VVIN = 30 VVIN = 36 VVIN = DISSIPATION (W)OUTPUT CURRENT (A)VIN = 24 VVIN = 30 VVIN = 36 VVIN = JANUARY2011 REVISEDOCTOBER2015 TypicalCharacteristics(continued)Unlesso therwisespecified,the followingconditionsapply:VIN= 24 V; Cin = 10-uFX7 RCeramic;CO= 47 uF; TA= 25 EfficiencyVOUT= 18 V, TA= 85 CFigure20.

10 PowerDissipationVOUT= 18 V, TA= 85 CFigure21. EfficiencyVOUT= 24 V, TA= 85 CFigure22. PowerDissipationVOUT= 24 V, TA= 85 CFigure23. EfficiencyVOUT= 30 V, TA= 85 CFigure24. PowerDissipationVOUT= 30 V, TA= 85 CCopyright 2011 2015,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback9 ProductFolderLinks: lmz14203h -20 020 40 60 80 100 120 CURRENT (A)AMBIENT TEMPERATURE ( C)VIN = 34 VVIN = 36 VVIN = 42V-20020 40 60 80 100 120 CURRENT (A)AMBIENT TEMPERATURE ( C)VIN = 34 VVIN = 36 VVIN = 42V-20020 40 60 80 100 120 CURRENT (A)AMBIENT TEMPERATURE ( C)VIN = 30 VVIN = 36 VVIN = 42V-20020 40 60 80 100 120 CURRENT (A)AMBIENT TEMPERATURE ( C)VIN = 30 VVIN = 36 VVIN = 42V-20020 40 60 80 100 120 CURRENT (A)AMBIENT TEMPERATURE ( C)VIN = 15 VVIN = 24 VVIN = 42V-20020 40 60 80 100 120 CURRENT (A)AMBIENT TEMPERATURE ( C)VIN = 15 VVIN = 24 VVIN = 42 VLMZ14203 HSNVS692G JANUARY2011 (continued)Unlessotherwisespecified,the followingconditionsapply:VIN= 24 V; Cin = 10-uFX7 RCeramic;CO= 47 uF; TA= 25 ThermalDeratingVOUT= 12 V, R JA= 16 C/WFigure26.