General description：

The GD30BC2502x is a highly integrated low quiescent current switching battery charger control IC for 2/3/5 series cell Li-ion battery packs. It drives an external N-MOSFET that can output a charge current up to 5A through a sensing resistor and has a very high efficiency up to 90%. The battery voltage is regulated to very high precision (less than ±1%). The device operates with wide input range up to 32V. It has peak-current-mode control for fast loop response and easy compensation.Two control loops, constant current (CC) and constant voltage (CV) are implemented in the GD30BC2502x. The constant current is programmable up to 5A and regulated using a sense resistor. The constant voltage is precisely regulated internally.The device includes multiple protection features such as cycle-by-cycle current limiting, under voltage lockout and thermal shutdown. Other protection features include battery temperature monitoring and protection, charge status indication and internal timer to stop the charging cycle. The GD30BC2502x has a small footprint of QFN16 (4mmx4mm) and requires a minimal

number of external components allowing for it to best used in clean robots, drones or any 2/3/5 cell Li-ion battery chargers.

 Features:

 Charge 2/3/5 cell Li-ion battery packs with wide input operation voltage up to 32V

 Charging features

– Full charge cycle: pre-charge, constant current and constant voltage

– Switching charging up to 5A

– Charging current programmable with sensing resistor

– Support variety of battery chemistries, 4.1/4.2/4.3/4.35V @1%

 Protection features

– Cycle-by-Cycle Over Current Protection

– Battery Over/Under temperature protection

– Over voltage (OV) during charge

– Under voltage (UV) when charge/discharge

– Thermal Shutdown

 Additional features

– High charging efficiency up to 95%

– Fixed switching frequency 500KHz

– Charging status indicator

– Internal charging timing

– Low external component count

– I²C communication protocol 

Applications：

 Notebook

 Clean robots

 Aeromodelling, Drones

 Chargers for 2/3/5 series cell Li-ion battery