Demonstration circuit 1731A-B is a DC/DC converter demo board using the LTC3646-1 monolithic synchronous buck regulator in the DFN package. The input voltage range is from 4V to 40V. The output voltage range of LTC3646-1 is 0.6V to 15V. It can deliver up to 1A of output current. At light load conditions, DC1731A can operate in Burst Mode® operation to improve the efficiency. The user can choose to use internal or external compensation. The switching frequency of LTC3646-1 is programmable from 200kHz to 3MHz. It can be synchronized to an external clock through the MODE/SYNC pin.