6.1 Charging a Battery

The IS20xxS SoC has a built-in battery charger, which is optimized for lithium-polymer batteries. The battery charger includes a current sensor for a charging control, user programmable current regulator and high accuracy voltage regulator.

The charging current parameters are configured by using the UI (IS20XXS_UI) tool. Whenever the adapter is plugged-in, the charging circuit will be activated. Reviving, pre-charging, constant current mode, constant voltage mode and re-charging functions are implemented. The maximum charging current is 350 mA. The following figure illustrates the charging curve of a battery.