The TPS2041 and TPS2051 are 135-mΩ N-channel MOSFET high-side power switches from Texas Instruments. They can operate from supplies as low as 2.7 V. The switches are controlled by a logic enable input and use an internal charge pump to provide gate drive. The charge pump controls the power-switch rise times and fall times to minimize current surges during switching. When the output load exceeds the current-limit threshold or a short is present, the TPS2041 and TPS2051 limit the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OC) logic output low.
The TPS2041 and TPS2051 are 135‑mΩ N‑channel MOSFET high‑side power‑distribution switches intended for heavy capacitive loads and short‑circuit conditions. Each device includes an internal charge pump, over‑current, thermal‑shutdown, undervoltage lockout and ESD protection, and operates from 2.7 V to 5.5 V input.
Both switches are available in 8‑pin SOIC and PDIP packages, support a continuous output current of up to 500 mA, and feature logic‑level enable inputs (active‑low for TPS2041, active‑high for TPS2051). The datasheet provides detailed electrical characteristics, absolute‑maximum ratings, and recommended operating conditions.
| Continuous output current | 500 mA |
|---|---|
| Over‑current limit | 0.9 A load |
Each switch can continuously source up to 500 mA.