STMPS2151STR

STMPS2151STR is a power distribution switch intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. This device incorporates 90mW N-channel MOSFET high-side power switches for power distribution. This switch is controlled by a logic enable input. When the output load exceeds the current limit threshold or a short is present, the device limits the output current to a safe level by switching into a constant current mode. 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 the switch off to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switch remains off until a valid input voltage is present.

• 500mA continuous current
• Thermal and short-circuit protection with overcurrent logic output
• Operating range from 2.7 to 5.5V
• CMOS and TTL compatible enable input
• Undervoltage lockout (UVLO)
• 12µA maximum standby supply current
• ESD protection: 8KV HBM
• Reverse current protection and fault blanking
• Ambient temperature range from -40 to 85°C
• Available in a 5 pin SOT-23 package