Texas Instruments TPS25921AD electronic fuse, 1.7A output, ±2% accuracy, 4.5V–18V input range, -40°C to 125°C junction temperature, 8-SOIC package, surface mount.
| Parameter | Value |
|---|---|
| Mounting | Surface Mount |
| Voltage - input | 4.5V ~ 18V |
| Output current | 1.7A |
| Operating temperature | -40°C~125°C(TJ) |
| Package | Tube |
| Accuracy | ±2% |
| Function | Electronic Fuse |
| Case | 8-SOIC (0.154\", 3.90mm Width) |
The ±2% accuracy on the current-limit threshold means you can set the trip point closer to the load maximum without triggering nuisance trips. For a 1.7 A continuous output, the actual limit falls between roughly 1.67 A and 1.73 A — tight enough to protect a 1.5 A nominal load with margin. The 4.5 V to 18 V input range covers common 5 V and 12 V rails, plus intermediate bus voltages up to 18 V.
The ±2% accuracy applies to the current-limit threshold. For a 1.7 A output, the actual limit stays within 1.67 A to 1.73 A, letting you set the limit closer to the load without false trips.