Overview

Today’s cell phones and other handheld devices provide ever increasing functionality and a richer user experience. As their functionality increases, the demand for battery power increases as well, which leads to adoption of highercapacity batteries. These higher-capacity batteries require high-current charging solutions, which can best be served with efficient PWM chargers.

Lithium-Ion battery charging is simplified with modern IC charging solutions. This application note provides a guide for how to use the FAN5400 and FAN5420 family of PWM chargers for high-current, fast-charging solutions to minimize the charging time while providing full compliance to modern battery safety specifications.