Pololu RC Switch with Small Low-Side MOSFET

The Pololu RC Switch with Small Low-Side MOSFET converts standard hobby RC receiver outputs into simple on/off signals. It measures incoming RC pulse widths against a configurable threshold to control an integrated MOSFET, allowing you to drive small loads like LEDs, relays, or motors directly from your RC system.

A built-in flyback diode across the load outputs means you can connect inductive loads (motors, relays) without additional external components. The switch also features a learning mode for adjusting the threshold and activation direction, plus a safe-start feature to prevent unexpected activation.

Key Features

• Low-Side MOSFET – Delivers up to 3 A at 5 V, handles load voltages up to 30 V
• Configurable Threshold – Default ~1700 µs with ±64 µs hysteresis, adjustable via learning mode
• Two Status Outputs – GOOD pin indicates valid RC signal (10–330 Hz, 0.5–2.5 ms), OUT pin indicates MOSFET state
• Yellow Status LED – Visual feedback of switch state
• Flyback Diode – Integrated protection for inductive loads
• Safe-Start – Reduces likelihood of unexpected activation on power-up

Specifications

• Supply Voltage (VCC) – 2.5–5.5 V
• MOSFET Current – Up to ~3 A (at 5 V VCC)
• Load Voltage – Up to 30 V
• Dimensions – 0.4″ × 0.6″
• Weight – ~0.5 g (without header pins)

Ideal For

• Controlling LEDs, relays, or small motors from RC systems
• Converting RC receiver outputs to digital signals for microcontrollers
• Simple RC-activated switching applications

Package Contents

• 1× Pololu RC Switch with Small Low-Side MOSFET
• 1× 12-pin 0.1″ straight breakaway male header

Resources

• User's Guide