PCA9531 - 8-bit I2C LED dimmer
The PCA9531 is an 8-bit I2C & SMBus I/O expander optimized for dimming LEDs in 256 discrete steps for Red/Green/Blue (RGB) color mixing and back light applications.
The PCA9531 contains an internal oscillator with two user programmable blink rates and duty cycles coupled to the output PWM.
The LED b
PCA9531 Features
* Eight LED drivers (on, off, flashing at a programmable rate)
* Two selectable, fully programmable blink rates (frequency and duty cycle) between 0.625 and 160 Hz (1.6 and 6.25 milliseconds)
* 256 brightness steps
* Input/outputs not used as LED drivers can be used
