Single-cell Li-Ion charger with I²C programmability
The Texas Instruments BQ24253RGER is a single-cell lithium-ion battery charger with an I²C interface, allowing the host controller to set the charge current programmably up to 2A maximum. The 24-VFQFN (4x4 mm) package with exposed pad suits space-constrained portable designs where thermal dissipation through the PCB is critical.
2A charge current and fault protection
The constant-current charge profile is programmable via I²C, with a maximum charge current of 2A. The battery regulation voltage is fixed at 4.2V, matching standard single-cell Li-Ion termination. On-chip fault protection covers over-current, over-temperature, and over-voltage conditions, reducing the need for external supervisory circuits.
The maximum supply voltage is 10.5V, covering standard 5V USB and 9V wall-adapter inputs without an external pre-regulator.
Active lifecycle and ordering options
It is offered in Tape & Reel (TR) for automated assembly and Cut Tape (CT) for prototype or low-volume builds.