IS31FL3246
DESCRIPTION
IS31FL3246 is prised of 36 constant current channels, each channel can be pulse width modulated (PWM) by total 8 bits+10 bits (261890 steps) for smooth LED brightness control or color mixing control, 8 bits PWM (LFP) operate at 127Hz (can be disabled), 10 bits (HFP) operate at 32k Hz, to minimize the audible noise. The output current of each channel can be set at up to 25m A (Max.), all channels are grouped as G group(OUT1, OUT4, OUT7...), R group (OUT2, OUT5, OUT8...) , B group (OUT3, OUT6, OUT9...) and each group has a 8 bits output current control register which allows fine tuning the current for rich global RGB color mixing.
Proprietary programmable technology is used to minimize audible noise caused by MLCC decoupling capacitors. All registers can be programmed via a high speed I2C bus interface (1MHz).
The chip can be turned off by pulling the SDB pin low or by using the software shutdown feature to reduce power consumption. The rising edge of the SDB pin will reset...
