The TPS2046 and TPS2056 dual power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely. These devices 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 compatible with 5-V and 3-V logic. Gate drive is provided by an internal charge pump that controls 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 preset value, the internal circuit will cut off the output, and the overcurrent protection circuit will generate an interrupt signal.
The TPS2046 and TPS2056 are dual current‑limited power‑distribution switches that integrate two 135‑mΩ N‑channel MOSFET high‑side switches in a single package. Each channel can handle up to 0.44 A continuous current and includes independent short‑circuit and thermal protection with an overcurrent logic output.
The devices operate from a 2.7 V to 5.5 V input range, feature a logic‑level enable input, undervoltage lockout, and are available in 8‑pin SOIC and PDIP packages. They are designed for hot‑insertion applications such as notebooks, desktop PCs, monitors, keyboards, scanners, printers, digital cameras, phones and PBXs.
| Input voltage range | 2.7 V to 5.5 V |
|---|---|
| Standby supply current (no load) | 10 mA |
| Ambient temperature range | –40 °C to 85 °C |
| Typical rise time | 2.5 ms |
The devices operate from 2.7 V up to 5.5 V.
The OCx open‑drain output goes low (active low) when overcurrent or overtemperature occurs.
They are offered in 8‑pin SOIC and 8‑pin PDIP packages.