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STMPS2272：Enhanced dual channel power switches

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.

Key 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

Product Specifications

Application Notes

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Quality & Reliability