The PCA9624 is an 8-bit voltage switch optimized LED driver with I2C bus. It is mainly used for brightness and flashing control of red/green/blue/amber (RGBA) LEDs with a current of 100mA. Each LED output has an independent 8-bit resolution (256 gradients) and a fixed output frequency of 97KHz PWM controller. It can adjust the brightness of the LED in the range of 0% to 99.6%, so that the light-emitting diode is set to a specific brightness value. The additional 8-bit resolution (256 gradients) PWM controller group has both a fixed frequency of 190Hz and can adjust the brightness of the LED lights from 0% to 99.6% within a fixed period of 24Hz and every 10.73 seconds, so that they maintain the same brightness or flashing speed.
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