Easy to use RGB LED driver with engine control and charge pump

The Texas Instruments LP5569 device is a programmable, easy-to-use nine-channel I2C LED driver designed to produce lighting effects for many 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 2.5V input voltage. The 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 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 of the devices with a unique I2C slave address for each device in the same system, which supports synchronization of the lighting effects among all devices.