2A programmable charge current with I2C control
The BQ24272RGER is a single-cell Li-Ion battery charger IC from Texas Instruments, delivering a programmable constant charge current up to 2A via an I2C serial interface. The I2C bus allows the host microcontroller to set the charge current, termination threshold, and input current limit dynamically, which is useful for systems that need to throttle charging based on thermal or input power constraints.
Integrated fault protection reduces BOM
The 10V maximum supply voltage accommodates standard USB VBUS (5V) and common wall-adapter outputs with margin for transients.
Package and thermal considerations
The exposed pad should be connected to the system ground plane with multiple vias to keep junction temperature within limits at 2A charge current.