The LTK5128D is an Electronic ESOP-8 RoHS component manufactured by LTKCHIP. The adjoined component is a Quadratic Unclassified Data (QUD) device that is primarily designed as a reliable power supply regulator. It can be used to provide an efficient and safe power supply protection to resist voltage peaks, overvoltage, undervoltage, and over current conditions. The device also provides an adjustable soft start option to ensure proper system start-up. Additionally, it is provided with an automatic function to intervene in events of overload, overvoltage, or short-circuits. It can work with a wide range of input voltage sources ranging from 60V to 400V AC, and is compatible with a variety of requirements for different applications. The LTK5128D is RoHS compliant and capable of meeting high quality standards.