PCA9952/55 16-channel LED driver
The PCA9952/55 is a 16-channel constant current LED driver with a Fm+ I2C interface, and independent current control for each channel.
The PCA9955 features 4 address pins, while the PCA9952 features 3 address pins and an active-low output enable pin (OE). If the output enable pin is not needed, it can be tied to GND and both parts can be used interchangeably. In addition to per-channel 8-bit PWM, the PCA9952/55 also features a per-channel 8-bit current adjustment from 225µA to a maximum of 57mA.