(ACTIVE) Nine-Channel I2C RGB LED Driver With Engine Control and Charge Pump


Functional diagram


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 VF, 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.


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Channels (#) 9   
LED Current Per Channel (mA) 25.5   
LED Configuration Parallel   
LED (#) 9   
Program Memory Yes   
Programmable Ramp Control Yes   
Vin (Min) (V) 2.5   
Vin (Max) (V) 5.5   
Vout (Min) (V) 2.5   
Vout (Max) (V) 5.5   
Iout (Max) (A) 0.23   
Iq (Typ) (mA) 0.002   
Shutdown Current (Typ) (uA) 0.2   
Peak Efficiency (%) 94   
Features Analog/PWM Mixed Dimming^Constant Current^Current Control^Direct PWM Dimming^I2C Control^Power Save Mode^Programmable Lighting Engines   
Rating Catalog   
Operating Temperature Range (C) -40 to 85   
Pin/Package 24WQFN   

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