The TPS2045A through TPS2048A and TPS2055A through TPS2058A power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered. These devices incorporate 80-mΩ N-channel MOSFET high-side power switches for power-distribution systems
The TPS2045A‑TPS2058A family provides high‑side N‑channel MOSFET switches for power‑distribution applications that may encounter heavy capacitive loads or short circuits. Each switch includes an internal charge pump, over‑current (OC) logic output, thermal shutdown, undervoltage lockout, and ESD protection. Enable inputs are TTL‑ and CMOS‑compatible and can be active‑high or active‑low depending on the device variant.
Key electrical characteristics include a 2.7 V to 5.5 V operating voltage range, 250 mA continuous current per channel, on‑state resistance up to 135 mΩ, and a standby supply current as low as 10 µA (single/dual) or 20 µA (triple/quad). The devices are offered in SOIC‑D packages with options for tape‑and‑reel or taped packaging.
| Continuous output current per channel | 250 mA |
|---|---|
| Operating voltage range | 2.7 V to 5.5 V |
| Maximum on‑state resistance (RDS(on)) | 135 mΩ |
| Standby supply current (single/dual devices) | 10 µA |
| Standby supply current (triple/quad devices) | 20 µA |
| Thermal shutdown temperature | ≈140 °C |
| Rise time (typical) | 2‑5 ms |
Each switch can continuously source up to 250 mA per channel.
The devices operate from 2.7 V up to 5.5 V.
The OCx pin provides an active‑low open‑drain output when over‑current or over‑temperature occurs.
They include over‑current detection, thermal shutdown, undervoltage lockout, and limited ESD protection.