The TPS2047 and TPS2057 triple power-distribution switches are intended 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, the charge pump enables internal overcurrent protection circuitry which turns the power supply off and generates a logic output signal. Short-circuit protection circuitry turns the switch off rapidly under short-circuit conditions.
The TPS2047 and TPS2057 are triple power-distribution switches intended for applications involving heavy capacitive loads and short circuits. These devices incorporate three 135-mΩ N-channel MOSFET high-side power switches in a single package, each controlled by a logic enable compatible with both 5-V and 3-V logic levels.
| On-state resistance (V_IN = 5 V) | 135 mΩ maximum |
|---|---|
| Continuous output current per switch | 250 mA minimum |
| Package type | 16-pin SOIC |
The rise and fall times are typically in the 2-ms to 4-ms range.
It limits output current by switching into a constant-current mode when the load exceeds the threshold.