Single-cell Li-Ion charger with I²C control
The BQ25898CYFFR: It delivers up to 3 A charge current and operates from a supply voltage up to 14 V, making it suitable for USB and adapter-powered applications.
I²C and USB interface for charge parameter tuning
The I²C and USB interface allows the host microcontroller to set charge current, termination voltage, and safety thresholds in real time — no external resistors needed for configuration. Built-in fault protection covers over-temperature and over-voltage conditions, so the charger can safely handle a faulty adapter or a hot environment without damaging the cell.
42-DSBGA package and board integration
Housed in a 42-DSBGA (2.8x2.5 mm) package, the BQ25898CYFFR is a surface-mount device that requires a PCB with fine-pitch BGA routing — the 0.4 mm ball pitch typically demands at least a 4-layer board for fan-out.