Texas Instruments LM2717 Handleiding

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LM2717

www.ti.com

SNVS253D–MAY2005–REVISEDMARCH2013

LM2717DualStep-DownDC/DCConverter

CheckforSamples:LM2717

1

FEATURES

DESCRIPTION

TheLM2717iscomposedoftwoPWMDC/DCbuck

2

•Fixed3.3VOutputBuckConverterwitha2.2A,

(step-down)converters.Thefirstconverterisusedto

0.16Ω,InternalSwitch

generateafixedoutputvoltageof3.3V.Thesecond

•AdjustableBuckConverterwitha3.2A,0.16Ω,

converterisusedtogenerateanadjustableoutput

InternalSwitch

voltage.BothconvertersfeaturelowR

DSON

(0.16Ω)

internalswitchesformaximumefficiency.Operating

•OperatingInputVoltageRangeof4Vto20V

frequencycanbeadjustedanywherebetween

•InputUndervoltageProtection

300kHzand600kHzallowingtheuseofsmall

•300kHzto600kHzPinAdjustableOperating

externalcomponents.Externalsoft-startpinsforeach

Frequency

enablestheusertotailorthesoft-starttimestoa

specificapplication.Eachconvertermayalsobeshut

•OverTemperatureProtection

downindependentlywithitsownshutdownpin.The

•Small24-LeadTSSOPPackage

LM2717isavailableinalowprofile24-leadTSSOP

packageensuringalowprofileoverallsolution.

APPLICATIONS

•TFT-LCDDisplays

•HandheldDevices

•PortableApplications

•LaptopComputers

TypicalApplicationCircuit

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2005–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Product specificaties