The BCT3119 is a constant current driver incorporating shift register and data latch. This CMOS device is designed for LED display applications.
The max output constant current can be set using an external resistor, and 64 steps of current could be set through a SPI interface with MCU. Any channel output could have any step current levels.
FEATURES
9 channel constant-current outputs, up to 40mA each
Each channel current could be controlled through a SPI interface with MCU
