Mikroe Charger 18 Click features the Analog Devices LTC3553 highly integrated power management and battery charger for Li-Ion/Polymer battery applications. The Charger 18 is designed for USB applications, and includes a PowerPath manager with automatic load prioritization and input current limit. It also includes a battery charger and numerous internal protection features. It indicates a battery charge state and comes with a synchronous 200mA buck regulator and a 150mA low dropout linear regulator (LDO).