SD-1538 is a surface mount device (SMD) voltage regulator module made by GC Electronics. It is a low dropout, three-terminal, positive-voltage regulator designed for use with standard logic circuits. It provides a regulated output voltage of +5V, adjustable from1.2V to 6.0V, with typical output current up to 500mA. It is used in circuits that need a steady and reliable power supply, and is suitable for use in a wide range of applications including LED driver, motor drivers, microcontrollers and other embedded systems. The device has wide temperature range of -40°C to +125°C and is RoHS compliant.