5V boost converter with true shutdown

This compact (17x12mm) step-up converter provides a reliable 5V output with true shutdown, perfect for battery-powered applications like environmental monitoring. If you're using a 3.7V Li-Ion battery but need 5V to power your air quality sensor, this converter is an ideal solution.

Unlike most boost converters that only disable the boost function while allowing current to flow through the inductor and diode, this board uses the FP6277—a synchronous boost converter. When the enable pin is pulled to ground, it completely disconnects the output, ensuring no current flows through when disabled. This feature is essential for projects where you need to power down sensors to conserve battery.

Features

• Input voltage range: 2.4V to 4.5V
• Output voltage: 5V
• Shutdown current: less than 1uA
• Short-circuit protection
• Output thermal protection

Documentation

• FP6277 Datasheet
• Design Files

Our design has been featured on both Hackster.io and the Tindie blog!

Certified open source hardware