Texas Instruments BQ24161YFFR, 1-cell Lithium Ion/Polymer battery charger, I²C programmable, 2.5 A max charge current, 49-DSBGA (2.8x2.8 mm), -40°C to 85°C operation.
| Parameter | Value |
|---|---|
| Mounting | Surface Mount |
| Battery pack voltage | 3.7V |
| Supply voltage | 10V |
| Current - charging | Constant - Programmable |
| Charge current - max | 2.5A |
| Interface | I²C |
| Operating temperature | -40°C~85°C(TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Case | 49-UFBGA, DSBGA |
| Number of cells | 1 |
| Fault protection | Over Temperature, Over Voltage |
| Battery chemistry | Lithium Ion/Polymer |
The 2.5 A maximum charge current sets the thermal budget for the 49-DSBGA package — the 2.8x2.8 mm footprint needs good PCB copper area to keep the junction below the 85°C ceiling. Fault protection includes over-temperature and over-voltage shutdown, which saves the downstream BOM from needing a separate supervisor IC.
Yes — the device is designed for 1-cell Lithium Ion/Polymer chemistry with a battery pack voltage of 3.7 V. The charge current is programmable via I²C up to 2.5 A.