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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

10 PF

Enable

R

ON

See Table

R

FBT

C

FF

0.022 PF

See Table

C

SS

0.022 PF

R

FBB

See Table

100 PF

LMZ12003

VOUT

FB

RON

SS

VIN

EN

GND

V

OUT

@ 3A

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

LMZ12003

SNVS636O–DECEMBER2009–REVISEDAUGUST2015

LMZ120033-ASimpleSwitcher

®

PowerModulewith20-VMaximumInputVoltage

1Features2Applications

1

•IntegratedShieldedInductor

•Point-of-loadConversionsfrom5-Vand12-V

InputRail

•SimplePCBLayout

•Time-CriticalProjects

•FlexibleStart-upSequencingUsingExternalSoft-

startCapacitorandPrecisionEnable•Space-ConstrainedHighThermalRequirement

Applications

•ProtectionAgainstInrushCurrentsandFaults

suchasInputUVLOandOutputShortCircuit•NegativeOutputVoltageApplications

(SeeAN-2027)SNVA425

•JunctionTemperatureRange–40°Cto125°C

•SingleExposedPadandStandardPinoutforEasy

3Description

MountingandManufacturing

TheLMZ12003SIMPLESWITCHER

®

powermodule

•FastTransientResponseforFPGAsandASICs

isaneasy-to-usestep-downDC-DCsolutioncapable

•LowOutputVoltageRipple

ofdrivingupto3-Aloadwithexceptionalpower

conversionefficiency,lineandloadregulation,and

•Pin-to-PinCompatibleWithDevices:

outputaccuracy.TheLMZ12003isavailableinan

–LMZ14203/2/1(42-VMaximum3A,2A,1A)

innovativepackagethatenhancesthermal

–LMZ12003/2/1(20-VMaximum3A,2A,1A)

performanceandallowsforhandormachine

•FullyWEBENCH

®

PowerDesignerEnabled

soldering.

•ElectricalSpecifications

TheLMZ12003canacceptaninputvoltagerail

between4.5Vand20Vandcandeliveran

–18-WMaximumTotalPowerOutput

adjustableandhighlyaccurateoutputvoltageaslow

–Upto3-AOutputCurrent

as0.8V.TheLMZ12003onlyrequiresthreeexternal

–InputVoltageRange4.5Vto20V

resistorsandfourexternalcapacitorstocompletethe

–OutputVoltageRange0.8Vto6V

powersolution.TheLMZ12003isareliableand

robustdesignwiththefollowingprotectionfeatures:

–Efficiencyupto92%

thermalshutdown,inputundervoltagelockout,output

•PerformanceBenefits

overvoltageprotection,shortcircuitprotection,output

–OperatesatHighAmbientTemperatureWith

currentlimit,andthisdeviceallowsstart-upintoa

NoThermalDerating

prebiasedoutput.Asingleresistoradjuststhe

switchingfrequencyupto1MHz.

–HighEfficiencyReducesSystemHeat

Generation

DeviceInformation

(1)(2)

–LowRadiatedEmissions(EMI)Testedto

PARTNUMBERPACKAGEBODYSIZE(NOM)

EN55022ClassBStandard

LMZ12003NDW(7)9.85mm×10.16mm

–Passes10-V/mRadiatedImmunityEMITest

(1)Forallavailablepackages,seetheorderableaddendumat

StandardEN610004-3

theendofthedatasheet.

(2)Peakreflowtemperatureequals245°C.SeeSNAA214for

moredetails.

SimplifiedApplicationSchematicEfficiency12-VInputat25°C

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Produktspecifikationer