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0.8

1.2

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2.5

3.3

5.0

25°C

OUTPUT CURRENT (A)

EFFICIENCY (%)

V

IN

C

IN

Enable

R

ON

R

FBT

C

FF

C

SS

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FBB

C

OUT

LMZ14203EXT

VOUT

FB

RON

SS

VIN

EN

GND

V

OUT

@ 3A

Product

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LMZ14203EXT

SNVS666H–JUNE2010–REVISEDOCTOBER2015

LMZ14203EXT3-ASIMPLESWITCHER

®

PowerModuleWith42-VMaximumInputVoltage

forMilitaryandRuggedApplications

1Features2Applications

1

•JunctionTemperatureRange–55°Cto125°C

•Point-of-loadConversionsfrom12-Vand24-V

InputRail

•IntegratedShieldedInductor

•TimeCriticalProjects

•SimplePCBLayout

•SpaceConstrainedandHighThermal

•FlexibleStart-upSequencingUsingExternalSoft-

RequirementApplications

StartandPrecisionEnable

•NegativeOutputVoltageApplications

•ProtectionAgainstInrushCurrentsandFaults

(SeeAN-2027SNVA425)

suchasInputUVLOandOutputShortCircuit

•SingleExposedPadandStandardPinoutforEasy

3Description

MountingandManufacturing

TheLMZ14203EXTSIMPLESWITCHER

®

power

•FastTransientResponseforPoweringFPGAs

moduleisaneasy-to-usestep-downDC-DCsolution

andASICs

capableofdrivingupto3-Aloadwithexceptional

•LowOutputVoltageRipple

powerconversionefficiency,lineandloadregulation,

andoutputaccuracy.TheLMZ14203EXTisavailable

•Pin-to-PinCompatibleWithFamilyDevices:

inaninnovativepackagethatenhancesthermal

–LMZ14203EXT/2EXT/1EXT

performanceandallowsforhandormachine

(42-VMaximum3A,2A,1A)

soldering.

–LMZ12003/2/1(20-VMaximum3A,2A,1A)

TheLMZ14203EXTcanacceptaninputvoltagerail

–LMZ14203/2/1(42-VMaximum3A,2A,1A)

between6Vand42Vandcandeliveranadjustable

•FullyEnabledforWEBENCH

®

PowerDesigner

andhighlyaccurateoutputvoltageaslowas0.8V.

TheLMZ14203EXTonlyrequiresthreeexternal

•ElectricalSpecifications:

resistorsandfourexternalcapacitorstocompletethe

–18-WMaximumTotalOutputPower

powersolution.TheLMZ14203EXTisareliableand

–Upto3-AOutputCurrent

robustdesignwiththefollowingprotectionfeatures:

thermalshutdown,inputundervoltagelockout,output

–InputVoltageRange6Vto42V

overvoltageprotection,shortcircuitprotection,output

–OutputVoltageRange0.8Vto6V

currentlimit,andthedeviceallowsstart-upintoa

–Efficiencyupto90%

prebiasedoutput.Asingleresistoradjuststhe

•PerformanceBenefits:

switchingfrequencyupto1MHz.

–LowRadiatedEmissionsandHighRadiated

DeviceInformation

(1)(2)

Immunity

PARTNUMBERPACKAGEBODYSIZE(NOM)

–PassesvibrationStandardMIL-STD-883

LMZ14203EXTTO-PMOD(7)10.16mm×9.85mm

Method2007.2ConditionAJESD22–B103B

(1)Forallavailablepackages,seetheorderableaddendumat

Condition1

theendofthedatasheet.

–PassesDropStandardMIL-STD-883Method

(2)Peakreflowtemperatureequals245°C.SeeSNAA214for

2002.3ConditionBJESD22–B110ConditionB

moredetails.

SimplifiedApplicationSchematicEfficiency12-VInputat25°C

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Produktspecifikationer