STMPS2242

STMPS2242, STMPS2252 STMPS2262, STMPS2272 Enhanced dual-channel power switches 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 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. SO-8 MSOP8 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 r...