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00.51

1.5

2

2.5

3

0.8

1.2

1.5

1.8

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

R

FBB

C

OUT

LMZ12003EXT

VOUT

FB

RON

SS

VIN

EN

GND

V

OUT

@ 3A

Product

Folder

Sample &

Buy

Technical

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LMZ12003EXT

SNVS663H–JUNE2010–REVISEDAUGUST2015

LMZ12003EXT3-ASIMPLESWITCHER

®

PowerModuleWith20-VMaximumInputVoltage

forDemandingEnvironmentsandRuggedApplications

1Features2Applications

1

•JunctionTemperatureRange–55°Cto125°C

•Point-of-loadConversionsfrom5-Vand12-V

InputRail

•IntegratedShieldedInductor

•Time-CriticalProjects

•SimplePCBLayout

•SpaceConstrainedHighThermalRequirement

•FlexibleStart-upSequencingUsingExternalSoft-

Applications

StartCapacitorandPrecisionEnable

•NegativeOutputVoltageApplications(SeeAN-

•ProtectionAgainstInrushCurrentsandFaults

2027SNVA425)

suchasInputUVLOandOutputShortCircuit

•SingleExposedPadandStandardPinoutforEasy

3Description

MountingandManufacturing

TheLMZ12003EXTSIMPLESWITCHER

®

power

•FastTransientResponseforFPGAsandASICs

moduleisaneasy-to-usestep-downDC-DCsolution

•LowOutputVoltageRipple

capableofdrivingupto3-Aloadwithexceptional

powerconversionefficiency,lineandloadregulation,

•Pin-to-PinCompatibleWithFamilyDevices:

andoutputaccuracy.TheLMZ12003EXTisavailable

–LMZ14203EXT/2EXT/1EXT

inaninnovativepackagethatenhancesthermal

(42-VMaximum3A,2A,1A)

performanceandallowsforhandormachine

–LMZ14203/2/1(42-VMaximum3A,2A,1A)

soldering.

–LMZ12003/2/1(20-VMaximum3A,2A,1A)

TheLMZ12003EXTcanacceptaninputvoltagerail

•FullyWEBENCH

®

PowerDesignerEnabled

between4.5Vand20Vandcandeliveran

adjustableandhighlyaccurateoutputvoltageaslow

•ElectricalSpecifications

as0.8V.TheLMZ12003EXTonlyrequiresthree

–18-WMaximumTotalPowerOutput

externalresistorsandfourexternalcapacitorsto

–Upto3-AOutputCurrent

completethepowersolution.TheLMZ12003EXTisa

reliableandrobustdesignwiththefollowing

–InputVoltageRange4.5Vto20V

protectionfeatures:thermalshutdown,input

–OutputVoltageRange0.8Vto6V

undervoltagelockout,outputovervoltageprotection,

–Efficiencyupto92%

shortcircuitprotection,outputcurrentlimit,andthe

•PerformanceBenefits

deviceallowsstart-upintoaprebiasedoutput.A

singleresistoradjuststheswitchingfrequencyupto1

–LowRadiatedEmissionsandHighRadiated

MHz.

Immunity

–PassesVibrationStandardMIL-STD-883

DeviceInformation

(1)(2)

Method2007.2ConditionAJESD22–B103B

PARTNUMBERPACKAGEBODYSIZE(NOM)

Condition1

LMZ12003EXTNDW(7)10.16mm×9.85mm

–PassesDropStandardMIL-STD-883Method

(1)Forallavailablepackages,seetheorderableaddendumat

2002.3ConditionBJESD22–B110ConditionB

theendofthedatasheet.

(2)Peakreflowtemperatureequals245°C.SeeSNAA214for

moredetails.

SimplifiedApplicationSchematicEfficiency12-VInputat25°C

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Produktspecifikationer