STMicroelectronics Power Load High-Side Switch, 1A, SOT-23-5

The STMicroelectronics STMPS2171STR power distribution switch is designed for applications where heavy capacitive loads and short-circuits are likely to be encountered. This device incorporates a 90mΩ N-channel MOSFET high-side power switch for efficient power distribution, controlled by a logic enable input.

The switch provides 500mA / 1000mA continuous current with thermal and short-circuit protection, including an overcurrent logic output for fault indication. It operates over a wide supply range from 2.7V to 5.5V and features a CMOS and TTL compatible enable input for easy integration with various logic levels.

Safety and reliability are enhanced with undervoltage lockout (UVLO), reverse current protection, and fault blanking. The device is UL recognized (file number E354278) and offers 8kV ESD protection, ensuring robust performance in demanding environments. The ambient temperature range is -40°C to 85°C, making it suitable for industrial applications.

Key Specifications

• Type: Single high-side switch
• Number of channels: 1
• Input voltage: 5V (typical)
• Current limit: 1A (1000mA)
• On-state resistance: 0.09Ω (90mΩ)
• Package: SOT-23-5 (5 pins)
• Enable input polarity: Active high
• Thermal protection: Yes
• Outputs: 1
• Operating temperature: -40°C to 125°C

This power switch is ideal for power distribution in systems requiring reliable protection and efficient switching.