24-bit 63 mA Constant current LED Driver with 10 MHz SPI interface in HVQFN40 package

The PCA9958 is a 24-channel SPI serial bus 63 mA LED driver with a supply voltage range of 2.7 V to 5.5 V. This device is optimized for dimming and blinking RGBA LEDs.

Each LED has its own 8-bit resolution fixed frequency operating at 31.25 kHz with an adjustable duty cycle 0% - 100% for brightness control. Additional PWM controller has a fixed frequency of 122 Hz and adjustable frequency of 15 Hz duty cycle from 0% - 99.6% for dimming and blinking control.

Output peak current is adjustable with an 8-bit linear DAC from 250 µA to 63.75 mA. The PCA9958 has open and short detection circuitry and thermal shutdown protection. This device has a 4-wire SPI bandwidth of 10 MHz to communicate with the local micro.