TPS2046 and TPS2056 dual current-limited 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 rated current, a fault current protection occurs that protects the devices from damage. TPS2046 and TPS2056 are compatible with logic levels and interfaces that allow them to be used with multiple logic families.
The TPS2046 and TPS2056 dual power‑distribution switches are intended for applications where heavy capacitive loads and short circuits are likely. Each device contains two 135 mΩ N‑channel MOSFET high‑side power switches with independent enable inputs, over‑current (OCx) and thermal protection, and an internal charge pump that allows operation from 2.7 V to 5.5 V.
Typical specifications include a continuous current limit of 250 mA per channel, standby supply current up to 10 A, and operation over an ambient temperature range of –40 °C to 85 °C. The devices are offered in 8‑pin SOIC and 8‑pin PDIP packages and include features such as undervoltage lockout, bidirectional switching, and human‑body‑model ESD protection.
| Maximum continuous current per channel | 250 mA |
|---|---|
| Operating voltage range (V_IN) | 2.7 V to 5.5 V |
| Maximum standby supply current | 10 A |
| Ambient temperature range | -40 °C to 85 °C |
| On‑state resistance (R_DS(on)) | 135 mΩ |
Each channel can continuously source up to 250 mA.
The devices operate with an input voltage from 2.7 V to 5.5 V.
The standby supply current is limited to a maximum of 10 A.