PCA9959 Datasheet (NXP)

PCA9959, LED driver

PCA9959 is a daisy-chain SPI-compatible 4-wire serial bus controlled 24-channel constant preset current LED driver, optimized for dimming and blinking 63 mA Red/ Green/Blue/Amber (RGBA) LEDs.

Each LED output has its own 6-bit resolution (64 steps) preset current configuration, with an absolute accur

PCA9959 Features

* 24 LED drivers, each output programmable at:

* Off

* On

* 6 bits programmable LED brightness

* Programmable LED output delay to reduce EMI and surge currents

* Gradation control for all channels

* Each channel can assign to one of four gradat