Product overview
Description
The STMPS2242/2252/2262/2272 power distribution switches are intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. These devices incorporate 100 mΩ MOSFET high-side power switches for power distribution systems that require multiple power switches in a single package.
Each switch is controlled by an independent logic enable input. When the output load exceeds the current limit threshold or a short is present, these devices limit the output current to a safe level by switching into a constant current mode, pulling the overcurrent (OCx) logic output low. When continuous heavy overloads and short-circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switch remains off until valid input voltage is present.
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All features
- 100 mΩ high-side MOSFET switch
- 500 mA/1000 mA continuous current per channel
- Thermal protection
- Independent short-circuit protection with overcurrent logic output
- Operating range from 2.7 V to 5.5 V
- CMOS and TTL compatible inputs
- 2.5 ms typical rise time
- Undervoltage lockout
- 13 μA maximum standby supply current
- Ambient temperature range: -40 °C to 85 °C
- 8 kV ESD protection
- Reverse current protection
- Fault blanking
