The TPS2042 and TPS2052 dual power distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered. The TPS2042 and the TPS2052 incorporate in single packages two 135-mΩ N-channel MOSFET high-side power switches for power distribution systems that require multiple power switches. Each switch is controlled by a logic enable that is compatible with 5-V logic and 3-V logic. Gate drive is provided by an internal charge pump designed to control the power-switch rise times and fall times to minimize current surges during switching. The charge pump requires no external components and allows operation from supplies as low as 2.7 V. When the output load exceeds the current-limit threshold or a short is present, the TPS2042 and TPS2052 limit the output current to 500 mA.
The TPS2042 and TPS2052 dual power‑distribution switches are intended for applications with heavy capacitive loads and possible short circuits. Each device contains two 135 mΩ N‑channel MOSFET high‑side switches that are controlled by a logic‑level enable input compatible with 5‑V and 3‑V logic. An internal charge pump drives the gate, allowing operation from supply voltages as low as 2.7 V.
The devices provide over‑current, thermal and undervoltage lockout protection, and are offered in 8‑pin SOIC and PDIP packages. Detailed electrical characteristics, absolute maximum ratings, and recommended operating conditions are listed, along with package dimensions for tape‑and‑reel handling.
| Continuous current per channel | 500 mA |
|---|---|
| On‑state resistance | 135 mΩ |
| Ambient temperature range | –40 °C to 85 °C |
A logic low on EN1 (or EN2) turns the power switch on, while a logic high disables it.
When the die temperature reaches about 140 °C, the internal thermal sense circuit shuts off the affected switch and automatically restarts it after the temperature drops about 20 °C.
The internal charge pump can operate from input voltages as low as 2.7 V.
Both devices are offered in 8‑pin SOIC and 8‑pin PDIP (plastic dual‑in‑line) packages.