EMQ9904 Overview
The EMQ9904 is a high efficiency, 4-channel power management IC for battery-powered, portable devices application. It integrates a high efficiency step-up DC/DC converter, a linear regulator and two high efficiency step-down DC/DC converters. The step-up DC/DC converter (CH1) can start up 0.9V typically with operating voltage down to 0.6V and up to 500mA loading capability.