Texas Instruments LP5522 Bruksanvisning

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LP5522

-+

GNDGNDT

CTRL

VDDISET

LED

V

IN

LP5522

www.ti.com

SNVS488A–JUNE2007–REVISEDMARCH2013

ProgrammableLEDDriver

CheckforSamples:LP5522

1

FEATURES

DESCRIPTION

TheLP5522isasimplesinglewireprogrammable

2

•ProgrammableBlinkingSequence

LEDcontrollerinsixbumpDSBGApackage.It

–1to3ProgrammablePulses

providesconstantcurrentflowthroughhighside

–1msto255msLEDonTime

driver.Outputcurrentcanbesetfrom1mAto20mA

byusinganexternalresistorontheISETpin.Ifno

–10msto2500msLEDOffTime

externalresistorisused,outputcurrentissetto5mA

–SingleorContinuousRunofProgrammed

defaultcurrent.TheLP5522iscontrolledusingonly

BlinkingSequence

onesignal.ThesignalcontrolseitherdirectlytheLED

•ConstantCurrentHighSideOutputDriver

driveroritlaunchespreviouslyprogrammedblinking

sequence.

•AdjustableCurrentwithExternalResistor

•0.2µATypicalShutdownCurrent

TheLP5522worksautonomouslywithoutaclock

signalfromthemasterdevice.VerylowLEDdriver

•AutonomousOperationwithoutExternalClock

headroomvoltagemakespossibletousesupply

•DSBGA-6Packagewith0.4mmPitch:

voltagesclosetoLEDforwardvoltage.Current

–1.215mmx0.815mmx0.6mm(LxWxH)

consumptionoftheLP5522isminimizedwhenLED

isturnedoffandoncecontrollerisdisabledall

supportingfunctionsarealsoshutdown.Verysmall

APPLICATIONS

DSBGApackagetogetherwithminimumnumberof

•IndicatorLights

externalcomponentsisabestfitforhandheld

•PhoneCosmetics

devices.

•Toys

TypicalApplication

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2007–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Produktspecifikationer