The ME2109FM5G is a switching controller manufactured by Micro One and housed in a SOT-23-5 package. This part is RoHS compliant and has built-in overvoltage protection. It provides optimized power conversion efficiency, reverse current protection, and protection from over current, under voltage, short circuits, and thermal protection. The ME2109FM5G offers adjustable output voltage, high switching frequency up to 1MHz, low turn-on time, and soft-start current control. It is designed to be used with a wide range of AC/DC power supplies and DC/DC converters. The ME2109FM5G is suitable for a variety of applications such as telecommunication, PCs, embedded systems, and notebook computers.