Texas Instruments LP8501 Bruksanvisning
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LP8501
D1
D2
D4
D7
VOUT
C
OUT
1 PF
C
2
0.47 PF
VDD1_6
VDD7_9
GND
TRIG
INT
C
IN
1 PF
V
IN
= 2.7V TO 5.5V
VDD
C
1
0.47 PF
C1+
C1-
C2+
C2-
GPO
B
G
R
D3
D8
B
G
R
B
G
R
D6
D5
D9
MCU
SCL
SDA
EN
CLK
V
OUT
LP8501
www.ti.com
SNVS548D–SEPTEMBER2008–REVISEDAUGUST2013
LP8501Multi-Purpose9-OutputLEDDriver
CheckforSamples:LP8501
1
FEATURES
DESCRIPTION
TheLP8501isanLEDdriverwith9outputs,
2
•ThreeIndependentProgramExecution
designedtoproduceversatilelightingeffectsfor
EnginesforUser-definedProgramswithLarge
mobiledevices.Thedeviceisequippedwithan
SRAMMemoryforStoringLightingPrograms
internalprogrammemory,whichallowsoperation
•9ProgrammableSource(HighSide)Driver
withoutprocessorcontrol.Internalprogrammemory
Outputswith25.5mAFull-ScaleCurrent,8-bit
isusedbythreeindependentprogramexecution
CurrentSettingResolutionand12-BitPWM
enginestoproduceuser-definedlightingeffectsfor
theoutputs.
ControlResolution
•FlexibleGroupingPossibilityforAll9Outputs
Ahigh-efficiencychargepumpenablesLEDdriving
IncludingGPOintoThreeGroupswithGroup
overfullLi-Ionbatteryvoltagerange.Theexcellent
PWMandFade-In/Fade-OutControls
efficiencyoverawideoperatingrangeisachievedby
autonomouslyselectingthebestchargepumpgain
•Built-inLEDTest
basedonLEDforwardvoltagerequirements.The
•AdaptiveChargePumpwith1xand1.5xGain
LP8501isabletoautomaticallyenterpower-save
Providesupto95%LEDDriveEfficiency,with
modewhenLEDoutputsarenotactive,thuslowering
SoftStartandOvercurrent/ShortCircuit
idlecurrentconsumptiondownto10µA(typ.)
Protection
•AutomaticPowerSaveMode;I
VDD
=10µA
(typ.)
•TwoWire,I
2
C-Compatible,ControlInterface
•SmallApplicationCircuit
•Pin-configuredLEDPoweringforLEDs1to6
andforLEDs7to9
•SolutionArea<18mm
2
APPLICATIONS
•FunLightsandIndicatorLights
•LEDBacklightingandColorKeypadLighting
•ProgrammableCurrentSource
•HapticFeedbackDriverandGPIOExpander
1
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof
TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
2Alltrademarksarethepropertyoftheirrespectiveowners.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2008–2013,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
Produktspecifikationer
| Varumärke: | Texas Instruments |
| Kategori: | ej kategoriserat |
| Modell: | LP8501 |
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