ETA9185 Ultra Low Power 5V Boost Converter, 20V Linear Charger and Fuel Gauge All-in-One Solution for TWS Charge Cradle ETA9185 is an all-in-one solution for TWS charge cradle. It includes a 20V single cell Li+ battery linear charger, a 5V Boost synchronous converter with true-shutoff function and a Fuel Gauge with LED indication. The linear charger is fully integrated with constant current (CC) / constant voltage (CV) control module and a charge FET. It has a pre-charge f...