Texas Instruments BQ24166RGET, single-cell Lithium-Ion battery charger IC, USB interface, 2.5 A maximum charge current, constant-current programmable, over-temperature and short-circuit protection, 24-VFQFN exposed-pad package, -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 | USB |
| 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 Temperature, Short Circuit |
| Battery chemistry | Lithium Ion |
The charger integrates over-temperature and short-circuit fault protection, reducing the need for external supervisory components on the power path. The 10 V maximum supply voltage gives enough headroom for a 5 V USB bus or a 9 V wall adapter without an external pre-regulator.
The USB interface is the control bus. Single-cell operation means the battery pack voltage is 3.7 V nominal.
Yes, the interface is USB. The charger accepts USB bus power and manages the input current limit per USB standards. The 10 V max supply also allows use with higher-voltage adapters.