The Pololu S9V11MACMA is an improved version of older Step-Up/Step-Down DC-DC Voltage Regulator Modules that offer high efficiency, adjustable output and low-noise operation. The module is capable of accepting an input voltage between 2.5V and 9V, and can output a regulated voltage between 0.8V - 8V. It is ideal for providing a stable voltage to devices that must operate at different input voltages, such as USB port devices, sensors, and micro-controllers. It is designed to maintain a steady output regardless of changes in input voltage, with an adjustable output current of up to 100mA. The device features a high conversion efficiency of up to 92%, and has a low quiescent current of only 4µA. It is also equipped with overcurrent, overvoltage and over temperature protection for added safety and reliability. This powerful module can help lower system costs, reduce power consumption and improve battery life.