STEVAL-ILL035V1

The STEVAL-ILL035V1 is a demo board based on LED7708 LED driver and STM32F103C6T6A microcontroller. The LED7708 is a 16 channels LED driver with boost controller and 4 wire serial interface. The purpose of this demonstration board is to provide an application example of a compact LED backlight driver using the LED7708 device. The output voltage required by the LED strings connected to the output channels is derived from a single input rail and continuously adjusted to minimize the voltage drop (and power dissipation) across them, despite an independent PWM duty cycle for each one. The brightness of each LED string is digitally controlled with 12bit or 16bit dimming resolution. The board has been designed as a demonstration of a solution for medium/large LCD panel backlight drivers, but is suitable for any application involving several LEDs assembled in strings.