Texas Instruments LP5523 Handleiding

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LP5523

D1

D2

D4

D7

VOUT

C

OUT

1 µF

C

2

0.47 µF

ASEL0

ASEL1

GND

MCU

SCL

SDA

EN

CLK

TRIG

INT

C

IN

1 µF

V

IN

= 2.7 V TO 5.5 V

VDD

C

1

0.47 µF

C1+

C1-

C2+

C2-

GPO

B

G

R

D3

D8

B

G

R

B

G

R

D6

D5

D9

LP5523

D2

D3

D1

VOUT

C

OUT

1 µF

ASEL0

ASEL1

GND

MCU

SCL

SDA

EN

CLK

TRIG

INT

C

IN

1 µF

V

IN

= 2.7 V TO 5.5 V

VDD

C1+

C1-

C2+

C2-

GPO

D6

D5

D4

D9

D8

D7

RGB LED

APPLICATION

WLED APPLICATION

NOTE: D7, D8 AND D9 POWERED

DIRECTLY FROM V

IN

C

2

0.47 µF

C

1

0.47 µF

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Folder

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Now

Technical

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AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

LP5523

SNVS550E–SEPTEMBER2009–REVISEDJANUARY2017

LP5523Nine-ChannelRGB-andWhite-LEDDriverWithInternal

ProgramMemoryandIntegratedChargePump–DSBGAPackage

1

1Features

1

•ThreeIndependentProgramExecutionEngines,

NineProgrammableOutputswith25.5-mAFull-

ScaleCurrent,8-BitCurrentSettingResolution,

and12-BitPWMControlResolution

•AdaptiveHigh-Efficiency1×/1.5×Fractional

ChargePump-EfficiencyUpto94%

•LEDDriveEfficiencyUpto93%

•ChargePumpWithSoftStartandOvercurrentand

Short-CircuitProtection

•Built-inLEDTest

•200-nATypicalStandbyCurrent

•AutomaticPower-SaveMode

I

VDD

=10µA(Typical)

•Two-WireI

2

C-CompatibleControlInterface

•FlexibleInstructionSet

•LargeSRAMProgramMemory

•SmallApplicationCircuit

•Source(High-Side)Drivers

•ArchitectureSupportsColorControl

2Applications

•FunLightsandIndicatorLights

•LEDBacklighting

•HapticFeedback

•ProgrammableCurrentSource

3Description

TheLP5523isa9-channelLEDdriverdesignedto

producelightingeffectsformobiledevices.Ahigh-

efficiencychargepumpenablesLEDdrivingoverfull

Li-Ionbatteryvoltagerange.Thedeviceisequipped

withaninternalprogrammemory,whichallows

operationwithoutprocessorcontrol.

TheLP5523maintainsexcellentefficiencyovera

wideoperatingrangebyautonomouslyselectingthe

bestcharge-pumpgainbasedonLEDforward

voltagerequirements.TheLP5523isableto

automaticallyenterpower-savemodewhenLED

outputsarenotactive,thusloweringidlecurrent

consumptiondownto10µA(typical).

TheLP5523hasanI

2

C-compatiblecontrolinterface

withfourpinselectableaddresses.Thedevicehasa

flexiblegeneralpurposeoutput(GPO),whichcanbe

usedasadigitalcontrolpinforotherdevices.INTpin

canbeusedtonotifyprocessorwhenalighting

sequencehasended(interruptfunction).Also,the

devicehasatriggerinputinterface,whichallows

synchronization,forexample,betweenmultiple

LP5523devices.

Thedevicerequiresonlyfoursmall,low-costceramic

capacitors.TheLP5523isavailableinatiny25-pin

DSBGApackage(0.4-mmpitch).

DeviceInformation

(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

LP5523DSBGA(25)2.26mm×2.26mm

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

TypicalApplication

Product specificaties