LP5569 Datasheet, PDF (1/86 Pages) Texas Instruments – Nine-Channel I2C RGB LED Driver With Engine Control and Charge Pump

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LP5569
SNVSAP8 – JULY 2017
LP5569 Nine-Channel I²C RGB LED Driver With Engine Control and Charge Pump
1 Features
•1 Supply Voltage Range: 2.5 V–5.5 V
• Nine High-Accuracy Current Sinks
– 25.5 mA Maximum per Channel
– 8-Bit Individual Current Control
– 12-Bit 20-kHz Internal Individual PWM Control
Without Audio Noise
• Three Programmable LED Engines
– Independent Illumination Control Without
Active Microcontroller Control
– Synchronization Among Multiple Devices
– Up to 256 Instructions in SRAM Memory for
Storing Sequences of Lighting Patterns
– LP5523- and LP55231-Device-Compatible
Command Set
• Flexible Dimming Control
– I²C Dimming Control
– PWM Direct-Input Dimming
– PWM Input Frequency: 100-Hz to 20-kHz
• Adaptive High-Efficiency Charge-Pump Control for
Driving High-V_F LEDs With Low Battery Voltage
• Master Fader Control Allows Dimming of Multiple
LEDs by Writing to Only One Register to Reduce
the I²C Bus Traffic
• 2-µA Low Standby Current and 10-µA in
Automatic Power-Save Mode When LEDs Are
Inactive
• POR, UVLO, and TSD Protection
3 Description
The LP5569 device is a programmable, easy-to-use
9-channel I²C LED driver designed to produce lighting
effects for various applications. The LED driver is
equipped with an internal SRAM memory for user-
programmed sequences and three programmable
LED engines, which allow operation without
processor control. Autonomous operation reduces
system power consumption when the processor is put
in sleep mode.
A high-efficiency charge pump enables the driving of
LEDs with high V_F, even with 2.5-V input voltage. The
LP5569 LED driver maintains good efficiency over a
wide operational voltage range by autonomously
selecting the best charge-pump gain based on LED
forward voltage requirements.
The LP5569 device enters power-save mode when
LEDs are not active, lowering idle-current
consumption considerably. A flexible digital interface
allows the connection of up to eight LP5569 devices
with a unique I²C slave address for each device in
the same system, which supports synchronization of
the lighting effects among all devices.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LP5569
WQFN (24)
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
CFLY1
1μF
CFLY2
1μF
2 Applications
LED Lighting, Indicator Lights, and Fun Lights for:
• Smart Speaker
• Smart Home Appliance
• Doorbell
• Electric Lock
• Smoke Detector
• Thermostat
• Set-Top Box
• Smart Router
• Bluetooth^® Headset
• Cell Phone
2.5 V to 5.5 V
VIN
CIN
1 μF
1.8 V
µC
C1–
VIN
C1+ C2–
V1P8
SCL
SDA
EN/PWM
CLK
GPIO/TRIG/INT
ADDR
AGND
C2+
VOUT
PGND
LED0
LED1
LED2
LED3
LED4
LED5
LED6
LED7
LED8
COUT
1 μF
VIN
Copyright © 2017, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. ADVANCE INFORMATION for pre-production products; subject to
change without notice.