The MP2326 is a fully integrated, high-efficiency, synchronous, step-down, switch-mode converter with a 40μA quiescent current. This very compact device achieves 4A continuous output current over a wide input supply range with excellent load and line regulation. It operates with high efficiency over a wide output current load range. It is optimized for battery-operated applications and applications requiring high light-load efficiency. With constant-on-time (COT) control, the MP2326 provides very fast transient response, easy loop design, and very tight output regulation. Full protection features include SCP, OCP, UVP, and thermal shutdown. The MP2326 requires a minimal number of readily available, standard external components with a space-saving 2mmx3mm, 14-pin QFN package.