Texas Instruments LP3954 Handleiding

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LP3954

www.ti.com

SNVS340D–JUNE2005–REVISEDMARCH2013

AdvancedLightingManagementUnit

CheckforSamples:LP3954

1

FEATURES

DESCRIPTION

LP3954isanadvancedlightingmanagementunitfor

2

•AudioSynchronizationforColor/RGBLEDs

handhelddevices.Itdrivesanyphonelightsincluding

•CommandBasedPWMControlledRGBLED

displaybacklights,RGB,keypadandcameraflash

Drivers

LEDs.TheboostDC-DCconverterdriveshigh

•HighCurrentDriverforFlashLEDWithBuilt-in

currentloadswithhighefficiency.WhiteLED

backlightdriversarehighefficiencylowvoltage

Timing

structureswithexcellentmatchingandautomaticfade

•4+2or6LowVoltageConstantCurrentWhite

in/fadeoutfunction.Thenewstand-alonecommand

LEDDriversWithOrogrammable8-Bit

basedRGBcontrollerisfeaturerichandeasyto

Adjustment(0…25mA/LED)

configure.Built-inaudiosynchronizationfeature

•HighEfficiencyBoostDC-DCConverter

allowsusertosynchronizethecolorLEDstoaudio

input.Integratedhighcurrentdrivercandrivecamera

•SPI/I

2

CCompatibleInterface

flashLEDormotor/vibra.InternalADCcanbeused

•PossibilityforExternalPWMDimmingControl

forambientlightortemperaturesensing.Theflexible

•PossibilityforClockSynchronizationforRGB

SPI/I

2

CinterfaceallowseasycontrolofLP3954.

Timing

SmallDSBGApackagetogetherwithminimum

numberofexternalcomponentsisabestfitfor

•AmbientLightandTemperatureSensing

handhelddevices.

Possibility

•SmallPackage–DSBGA,3.0x3.0x0.6mm

APPLICATIONS

•CellularPhones

•PDAs,MP3players

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2005–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Product specificaties