Texas Instruments BQ24297RGER, single-cell Li-Ion/Li-Polymer battery charger, I²C interface, 3A max charge current, 4.2V battery pack voltage, 24-VFQFN Exposed Pad package, -40°C to 85°C operating temperature.
| Parameter | Value |
|---|---|
| Mounting | Surface Mount |
| Battery pack voltage | 4.2V |
| Supply voltage | 6.2V |
| Current - charging | Constant - Programmable |
| Charge current - max | 3A |
| Interface | I²C |
| Operating temperature | -40°C~85°C(TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Case | 24-VFQFN Exposed Pad |
| Number of cells | 1 |
| Fault protection | Over Current, Over Temperature, Over Voltage |
| Battery chemistry | Lithium Ion/Polymer |
The 3 A maximum charge current is the ceiling for a single-cell Li-Ion pack — the actual charge rate is set via I²C registers, so the same BOM can support different cell capacities by adjusting the current limit in firmware.
Integrated over-current, over-temperature, and over-voltage fault protection means the charger can handle a shorted output or a hot environment without external supervisory ICs.
The maximum charge current is 3 A, programmable via the I²C interface. The actual charge rate is set in firmware, so the same part can serve different cell capacities by adjusting the current limit.
Yes — the I²C interface requires an external host microcontroller to write the charge current, termination current, and other configuration registers. Without an I²C master, the charger operates at its default settings, which may not match the battery pack.