STMicroelectronics A7985ATR, Automotive AEC-Q100, Step-Down Buck Regulator, Adjustable Output, 2A, 250kHz, 8-SOIC Exposed Pad, -40°C to 150°C.
| Parameter | Value |
|---|---|
| Series | Automotive, AEC-Q100 |
| Output type | Adjustable |
| Mounting | Surface Mount |
| Voltage - input | 4.5V |
| Voltage - output | 38V |
| Voltage - output (Min (Fixed)) | 0.6V |
| Output current | 2A |
| Frequency - switching | 250kHz |
| I/O channels | 1 |
| Operating temperature | -40°C ~ 150°C (TJ) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Function | Step-Down |
| Topology | Buck |
| Case | 8-SOIC (0.154\", 3.90mm Width) Exposed Pad |
| Output configuration | Positive |
| Synchronous rectifier | No |
The 2A output rating is continuous — the thermal pad needs a solid copper pour and vias to keep junction temperature under control at full load; a layout skimpy on copper will current-limit or thermally cycle before 2A.
The exposed pad package is a rework-friendly footprint — the leads are visible and accessible with a hot-air station, and the exposed pad underneath gives you a thermal path to the board.
Yes, the A7985ATR is part of the Automotive, AEC-Q100 series, meaning it is qualified for automotive applications including under-hood and chassis-domain environments.