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LMZ31704

PWRGD

SENSE+

VOUT

PVIN

VIN

INH/UVLO

RT/CLK

VADJ

SS/TR

STSEL

AGNDPGND

C

IN

R

SET

C

OUT

V

OUT

V

IN

R

RT

SYNC_OUT

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Design

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

LMZ31704

SLVSBV8E–JUNE2013–REVISEDFEBRUARY2020

LMZ317044-APowerModulewith2.95-Vto17-VInputand

CurrentSharinginQFNPackage

1

1Features

1

•Completeintegratedpowersolutionallows

smallfootprint,low-profiledesign

•10-mm×10-mm×4.3-mmpackage

–PincompatiblewithLMZ31710andLMZ31707

•Efficienciesupto95%

•Eco-mode™/lightloadefficiency(LLE)

•Wide-outputvoltageadjust

0.6Vto5.5V,with1%referenceaccuracy

•Supportsparalleloperationforhighercurrent

•Optionalsplitpowerrailallows

inputvoltagesdownto2.95V

•Adjustableswitchingfrequency

(200kHzto1.2MHz)

•Synchronizestoanexternalclock

•Provides180°out-of-phaseclocksignal

•Adjustableslowstart

•Outputvoltagesequencing/tracking

•Powergoodoutput

•Programmableundervoltagelockout(UVLO)

•Overcurrentandovertemperatureprotection

•Pre-biasoutputstart-up

•Operatingtemperaturerange:–40°Cto85°C

•Enhancedthermalperformance:13.3°C/W

•MeetsEN55022ClassBemissions

–Integratedshieldedinductor

•CreateacustomdesignusingtheLMZ31704with

theWEBENCH

®

PowerDesigner

2Applications

•Broadbandandcommunicationsinfrastructure

•Automatedtestandmedicalequipment

•CompactPCI/PCIexpress/PXIexpress

•DSPandFPGApoint-of-loadapplications

3Description

TheLMZ31704powermoduleisaneasy-to-use

integratedpowersolutionthatcombinesa4-ADC/DC

converterwithpowerMOSFETs,ashieldedinductor,

andpassivesintoalowprofile,QFNpackage.This

totalpowersolutionallowsasfewasthreeexternal

componentsandeliminatestheloopcompensation

andmagneticspartselectionprocess.

The10×10×4.3mmQFNpackageiseasyto

solderontoaprintedcircuitboardandallowsa

compactpoint-of-loaddesign.Achievesgreaterthan

95%efficiencyandexcellentpowerdissipation

capabilitywithathermalimpedanceof13.3°C/W.The

LMZ31704offerstheflexibilityandthefeature-setof

adiscretepoint-of-loaddesignandisidealfor

poweringawiderangeofICsandsystems.

Advancedpackagingtechnologyaffordsarobustand

reliablepowersolutioncompatiblewithstandardQFN

mountingandtestingtechniques.

SimplifiedApplication

Produktspecifikationer