The Buck 9 Click Board™ is a high-efficiency step-down converter that provides a highly regulated output voltage derived from the connected power source, rated from 4V to 36V. The regulated output voltage can be selected between two values: 3.3V and 5V. These are voltage values that are most commonly used in many embedded designs. Buck 9 Click Board™ is based around an integrated DC-DC converter, labelled as MP9943. Due to its high efficiency, MP9943 allows the Click Board™ to easily deliver up to 3A of current. The MP9943 is very reliable, offering over-current and under-voltage protection, as well as a thermal shutdown