The TPS2042 and TPS2052 are dual power-distribution switches designed for applications involving heavy capacitive loads and short circuits. Each device incorporates two 135-mΩ N-channel MOSFET high-side power switches controlled by logic enable inputs compatible with 5-V and 3-V logic. An internal charge pump drives the gate voltage to minimize current surges during switching, requiring no external components and allowing operation from supplies as low as 2.7 V.
These switches feature built-in protection mechanisms, including overcurrent limiting that switches into a constant-current mode and thermal protection that shuts off the switch if the junction temperature rises too high. The devices are available in 8-pin SOIC and PDIP packages and operate over an ambient temperature range of -40°C to 85°C.
| On-state resistance (5V) | 135 mΩ maximum |
|---|---|
| Continuous output current | 500 mA |
| Short-circuit current limit | 0.9 A |
| Operating temperature range | -40°C to 85°C |
| Input voltage range | 2.7 V to 5.5 V |
| ESD protection (Human Body Model) | 2 kV |
The device supplies a minimum of 500 mA per switch.
The switches are designed to limit the load at 0.9 A.
The charge pump allows operation from supplies as low as 2.7 V.