BQ24259RGET, IC: Supervisor Integrated Circuit; battery charging controller

BQ24259 Single Cell USB NVDC-1 ChargerTexas Instruments BQ24259 Single Cell USB NVDC-1 Charger is a highly-integrated switch-mode battery charge management and system power path management device. It is designed for single-cell Li-Ion and Li-polymer batteries in a wide range of smartphone and tablet applications. A low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time, and extends battery life during discharging phase. The I 2 C serial interface with charging and system settings makes the device a truly flexible solution. The device supports 3.9V to 6.2V USB input sources. This includes a standard USB host port and USB charging port with 6.4V overvoltage protection. The Texas Instruments BQ24259 Single Cell USB NVDC-1 Charger supports USB 2.0 and USB 3.0 power specifications with input current and voltage regulation.