The Pololu 25V10F12 is a small two-terminal step-down (buck) voltage regulator module. It provides an efficient, compact, and cost-effective solution for converting a 12 V input to a fixed, single-output voltage of between 0.8 V and 11 V. By featuring short-circuit protection, adjustable current-limit protection, and an optional over-temperature shutdown, this module can help protect any system into which it is integrated. Its wide input voltage range of 4.5 V to 18 V and high efficiency of 87% makes it suitable for most automotive, industrial, and portable power applications. The outputs of the 25V10F12 are perfectly isolated from its inputs for reliable operation.