It integrates a programmable constant-current charge controller with over-temperature and over-voltage fault protection, all in a compact 10-WSON (3x2) package. The part targets applications like handheld instruments, portable medical devices, and IoT endpoints where a 1S LiFePO4 cell (3.5V full-charge voltage) is the energy store and USB VBUS is the primary charging source.
Charge current and supply voltage — sizing the rail and thermal budget
The maximum charge current is 1A, programmable via an external resistor — that sets the charging time for the cell and the thermal dissipation in the 10-WFDFN package. The over-voltage protection clamps the input to safe levels for the LiFePO4 cell.