[The PCA9685 is an I²C-bus controlled 16-channel LED controller optimized for Red/Green/Blue/Amber (RGBA) color backlighting applications.](http://www.nxp.com/products/interfaces/ic-bus-portfolio/ic-led-display-control/16-channel-12-bit-pwm-fm-plus-ic-bus-led-controller:PCA9685#overviewExpand)
