Texas Instruments LP5569 Bedienungsanleitung
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VIN
AGND
SCL
SDA
LED0
LED1
LED2
LED3
EN/PWM
CLK
GPIO/TRIG/INT
ADDR
LED4
LED5
LED6
LED7
LED8
C1–
C1+
VOUT
C
OUT
1μF
C
FLY1
1Fμ
C
IN
1μF
µC
C2–
C2+
C
FLY2
1Fμ
V1P8
PGND
2.5Vto5.5V
1.8 V
VIN
VIN
Copyright © 2017,Texas Instruments Incorporated
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AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,
intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.
LP5569
SNVSAP8A–JULY2017–REVISEDSEPTEMBER2017
LP5569Nine-ChannelI
2
CRGBLEDDriverWithEngineControlandChargePump
1
1Features
1
•SupplyVoltageRange:2.5V–5.5V
•NineHigh-AccuracyCurrentSinks
–25.5mAMaximumperChannel
–8-BitIndividualCurrentControl
–12-Bit20-kHzInternalIndividualPWMControl
WithoutAudioNoise
•ThreeProgrammableLEDEngines
–IndependentIlluminationControlWithout
ActiveMicrocontrollerControl
–SynchronizationAmongMultipleDevices
–Upto256InstructionsinSRAMMemoryfor
StoringSequencesofLightingPatterns
–LP5523-andLP55231-Device-Compatible
CommandSet
•FlexibleDimmingControl
–I
2
CDimmingControl
–PWMDirect-InputDimming
–PWMInputFrequency:100-Hzto20-kHz
•AdaptiveHigh-EfficiencyCharge-PumpControlfor
DrivingHigh-V
F
LEDsWithLowBatteryVoltage
•MasterFaderControlAllowsDimmingofMultiple
LEDsbyWritingtoOnlyOneRegistertoReduce
theI
2
CBusTraffic
•2-µALowStandbyCurrentand10-µAin
AutomaticPower-SaveModeWhenLEDsAre
Inactive
•POR,UVLO,andTSDProtection
2Applications
LEDLighting,IndicatorLights,andFunLightsfor:
•SmartSpeaker
•SmartHomeAppliance
•Doorbell
•ElectricLock
•SmokeDetector
•Thermostat
•Set-TopBox
•SmartRouter
•Bluetooth
®
Headset
•CellPhone
3Description
TheLP5569deviceisaprogrammable,easy-to-use
9-channelI
2
CLEDdriverdesignedtoproducelighting
effectsforvariousapplications.TheLEDdriveris
equippedwithaninternalSRAMmemoryforuser-
programmedsequencesandthreeprogrammable
LEDengines,whichallowoperationwithout
processorcontrol.Autonomousoperationreduces
systempowerconsumptionwhentheprocessorisput
insleepmode.
Ahigh-efficiencychargepumpenablesthedrivingof
LEDswithhighV
F
,evenwith2.5-Vinputvoltage.The
LP5569LEDdrivermaintainsgoodefficiencyovera
wideoperationalvoltagerangebyautonomously
selectingthebestcharge-pumpgainbasedonLED
forwardvoltagerequirements.
TheLP5569deviceenterspower-savemodewhen
LEDsarenotactive,loweringidle-current
consumptionconsiderably.Aflexibledigitalinterface
allowstheconnectionofuptoeightLP5569devices
withauniqueI
2
Cslaveaddressforeachdevicein
thesamesystem,whichsupportssynchronizationof
thelightingeffectsamongalldevices.
DeviceInformation
(1)
PARTNUMBERPACKAGEBODYSIZE(NOM)
LP5569WQFN(24)4.00mm×4.00mm
(1)Forallavailablepackages,seetheorderableaddendumat
theendofthedatasheet.
SimplifiedSchematic
Produktspezifikationen
| Marke: | Texas Instruments |
| Kategorie: | Nicht kategorisiert |
| Modell: | LP5569 |
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