PCA9530 Datasheet (NXP Semiconductors) - 2-bit I2C-bus LED dimmer

PCA9530, 2-bit I2C-bus LED dimmer

The PCA9530 is a 2-bit I2C-bus and SMBus I/O expander optimized for dimming LEDs in 256 discrete steps for Red/Green/Blue (RGB) color mixing and backlight applications.

The PCA9530 contains an internal oscillator with two user programmable blink rates and duty cycles coupled to the output PWM.

The L

PCA9530 Features

* I 2 LED drivers (on, off, ﬂashing at a programmable rate) I 2 selectable, fully programmable blink rates (frequency and duty cycle) between 0.591 Hz and 152 Hz (1.69 seconds and 6.58 milliseconds) I 256 brightness steps I Input/output not used as LED drivers can be used as regular GPIOs I Internal o