MCP16331 INV click works as a buck-boost voltage regulator, a switching regulator topology that combines principles of the buck conversion (step-down) and the boost conversion (step-up). A buck converter outputs voltage that is smaller than the input voltage (steps down the input voltage). A boost converter outputs voltage that is greater than the input voltage (steps up the input voltage). By combining these two topologies, MCP16331 INV click is able to output a regulated DC voltage, which can be set in the code, for input voltage both greater and less than the output voltage. A major difference between the MCP16331 INV click and another click with the same name - MCP16331 click, is that this click works in an inverting configuration, providing an output voltage which is negative in respect to the GND level. Negative voltage is often used in symmetrical power supply configurations - for powering up operational amplifiers and similar devices that require such type of power supply. This feature, as well as the excellent power switching efficiency, overtemperature protection, and a clean regulated voltage output makes this device an ideal solution for powering up any application that demands a negative voltage power supply.