Pololu 5V Step-Up/Step-Down Voltage Regulator S18V20F5

The **Pololu 5V Step-Up/Step-Down Voltage Regulator S18V20F5** is a compact and efficient buck-boost DC-DC converter that delivers a fixed 5V output from input voltages ranging from 2.9V to 30V. Its SEPIC-based design allows it to regulate voltage whether the input is above or below 5V, making it particularly useful for battery-powered projects where the voltage may fluctuate significantly. The regulator can supply up to 2A of continuous output current in typical conditions and features built-in protections such as over-current protection, thermal shutdown, reverse voltage protection, and under-voltage lockout. Its small size, wide input range, and robust performance make it ideal for powering 5V systems from variable or unstable power sources.