This is a driver breakout allows you to pilot your LEDs easily. FemtoBuck provides around 350 mA current for each channel with a supply voltage up to 36 V and 0 - 2.5 V analog signal. FemtoBuck contains an AL8805 constant current driver IC. Efficiency of this driver is around % 95. Connections on the board have been designed as compatible with 3.5 mm connectors.