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70

75

80

85

90

95

100

EFFICIENCY (%)

OUTPUT CURRENT (A)

VIN = 15V

VIN = 24V

VIN = 30V

VIN = 36V

VIN = 42V

V

IN

C

IN

Enable

R

ON

R

FBT

C

FF

C

SS

R

FBB

C

OUT

LMZ14203H

VOUT

FB

RON

SS

VIN

EN

GND

V

OUT

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

LMZ14203H

SNVS692G–JANUARY2011–REVISEDOCTOBER2015

LMZ14203HSIMPLESWITCHER

®

6Vto42V,3AHighOutputVoltagePowerModule

1Features2Applications

1

•IntegratedShieldedInductor

•IntermediateBusConversionsto12-Vand24-V

Rail

•SimplePCBLayout

•Time-CriticalProjects

•FlexibleStart-UpSequencingUsingExternalSoft-

StartandPrecisionEnable•SpaceConstrainedandHighThermal

RequirementApplications

•ProtectionAgainstInrushCurrents

•NegativeOutputVoltageApplications

•InputUVLOandOutputShort-CircuitProtection

•–40°Cto125°CJunctionTemperatureRange

3Description

•SingleExposedPadandStandardPinoutforEasy

TheLMZ14203HSIMPLESWITCHER

®

power

MountingandManufacturing

moduleisaneasy-to-usestep-downDC-DCsolution

•LowOutputVoltageRipple

thatcandriveupto3-Aloadwithexceptionalpower

conversionefficiency,lineandloadregulation,and

•Pin-to-PinCompatibleFamily:

outputaccuracy.TheLMZ14203Hisavailableinan

–LMZ14203H/2H/1H(42VMaximum,3-A,2-A,

innovativepackagethatenhancesthermal

1-A)

performanceandallowsforhandormachine

–LMZ14203/2/1(42VMaximum,3-A,2-A,1-A)

soldering.

–LMZ12003/2/1(20VMaximum,3-A,2-A,1-A)

TheLMZ14203Hcanacceptaninputvoltagerail

•FullyEnabledforWEBENCH

®

PowerDesigner

between6Vand42Vanddeliveranadjustableand

highlyaccurateoutputvoltageaslowas5V.The

•ElectricalSpecifications

LMZ14203Honlyrequiresthreeexternalresistors

–Upto3-AOutputCurrent

andfourexternalcapacitorstocompletethepower

–InputVoltageRange6Vto42V

solution.TheLMZ14203Hisareliableandrobust

designwiththefollowingprotectionfeatures:thermal

–OutputVoltageasLowas5V

shutdown,inputundervoltagelockout,output

–Efficiencyupto97%

overvoltageprotection,short-circuitprotection,output

•PerformanceBenefits

currentlimit,andallowsstart-upintoaprebiased

–HighEfficiencyReducesSystemHeat

output.Asingleresistoradjuststheswitching

frequencyupto1MHz.

Generation

–LowRadiatedEMI(EN55022ClassBTested)

DeviceInformation

(1)(2)

–NoCompensationRequired

PARTNUMBERPACKAGEBODYSIZE(NOM)

–LowPackageThermalResistance

LMZ14203HTO-PMOD(7)10.16mm×9.85mm

NOTE:EN55022:2006,+A1:2007,FCCPart15SubpartB:2007

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

(2)Peakreflowtemperatureequals245°C.SeeSNAA214for

moredetails.

SimplifiedApplicationSchematicEfficiencyV

OUT

=12V,T

A

=25°C

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Produktspecifikationer