The XC6221A501MR-G is an IC voltage regulator manufactured by Torex Semiconductor. It is a linear, fixed-output, low drop-out (LDO) voltage regulator with a rated output voltage of 5V and a maximum output current of 250mA. It is packaged in a small Outline Transistor (SOT25) surface-mount device (SMD). The device is commonly used in portable electronic and automotive electronics, providing stable power supply and negative voltage power sources. It can also be used for LED drivers, communication equipment, mobile phones, digital video cameras, MP3 players, and other electronic applications.