The BQ25703ARSNT is a highly integrated, high efficiency, synchronous, step-up (boost) and dual-output, buck-boost battery charger controller from Texas Instruments. This device is designed to quickly and accurately charge 1- or 2-cell Li-ion/Li-Polymer (Li-Po) batteries from any USB power source. It works from an input voltage range from 0.9V to 5.5V, and includes an intelligent power path architecture for power optimization. The device includes up to 5A of maximum output current, fast charging capabilities, and reverse current protection. It also includes programmable charge current and voltage levels, temperature monitoring and control for battery protection, and timer functions for safety and convenience. The BQ25703ARSNT is suitable for smartphones, tablets, wearables, and other portable or battery-powered devices.