Datasheet Summary
24-channel SPI serial bus 63 mA/5.5 V constant current LED driver
Rev. 1.0
- 31 January 2024
Product data sheet
1 General description
PCA9958 is a daisy-chain SPI-patible 4-wire serial bus controlled 24-channel constant current LED driver optimized for dimming and blinking 63 mA Red/Green/Blue/Amber (RGBA) LEDs.
Each LED output has its own 8-bit resolution (256 steps) fixed frequency individual PWM controller that operates at 31.25 kHz with a duty cycle that is adjustable from 0 % to 100 % to allow the LED to be set to a specific brightness value. An additional 8-bit resolution (256 steps) group PWM controller has both a fixed frequency of 122 Hz and an adjustable frequency...