The TPS2047 and TPS2057 triple power-distribution switches are designed for applications where heavy capacitive loads and short circuits are likely. These devices incorporate in single packages three 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, requiring no external components, allows operation from supplies as low as 2.7 V. When the output load exceeds the current limit, an overcurrent logic output is activated.
The TPS2047 and TPS2057 are triple power-distribution switches designed for applications involving heavy capacitive loads and potential short circuits. Each device incorporates three 135-mΩ N-channel MOSFET high-side power switches in a single package, controlled by logic enable inputs compatible with both 5-V and 3-V logic levels.
| On-state resistance (V_IN = 5 V) | 135 mΩ maximum |
|---|---|
| Continuous output current per channel | 250 mA minimum |
| Package type | 16-pin SOIC |
The rise and fall times are typically in the 2-ms to 4-ms range.
When an overload or short circuit is encountered, the driver reduces gate voltage to switch the output into a constant current mode.