The Buck 5 Click Board™ is a high-efficiency buck (step-down) DC/DC converter, which can provide digitally adjusted step-down voltage on its output while delivering a considerable amount of current. Buck 5 Click Board™ accepts a wide voltage range on its input - from 5V to 30V. The output voltage may be adjusted via the SPI interface, in the range from 0.9V to approximately 5.5V. This Click Board™ utilises the MAX17506, an integrated high efficiency, synchronous step-down DC/DC converter with internal feedback compensation, from Maxim Integrated. In addition, the MAX5401 digital potentiometer with SPI Interface is used on the feedback loop allowing digital control of the output voltage.