The TPS2045 and TPS2055 power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely.
The TPS2045 and TPS2055 are N‑channel MOSFET high‑side power switches designed for applications with heavy capacitive loads and possible short‑circuit conditions. Each device includes an internal charge pump, over‑current and thermal protection, and a logic‑level enable input compatible with 3‑V and 5‑V logic.
Key specifications include a continuous load current of 0.44 A, an operating input voltage range of 2.7 V to 5.5 V, typical rise and fall times of 2.5 ms to 4.4 ms, and protection features such as undervoltage lockout (~2 V) and thermal shutdown at ~140 °C. The switches are available in 8‑pin SOIC and PDIP packages and operate over –40 °C to 85 °C ambient temperature.
| Input voltage range | 2.7 V to 5.5 V |
|---|---|
| Undervoltage lockout threshold | ≈ 2 V |
| On‑state resistance (rDS(on)) at 5 V | 135 mΩ |
The switches operate with an input voltage between 2.7 V and 5.5 V.