38-280-BU is a type of integrated circuit (IC) manufactured by Global Connections Electronics (GC Electronics). It is a discrete, non-isolated DC/DC buck converter with a wide input voltage of 7 to 36V, a fixed 5V output voltage, and a 0.5 to 3A output current. This converter is ideal for many applications, such as powering sensors, microcontrollers, embedded systems, and more. It features an input overvoltage and overtemperature protection, as well as a precise internal reference voltage, which results in a very tight voltage regulation. Additionally, the 38-280-BU has a fast current limit response time, high efficiency, low quiescent current, and low ripple noise.