XC6221B3317R-G is a low-dropout (LDO) voltage regulator manufactured by Torex Semiconductor. This device has a maximum output current of 800mA and a high output accuracy of ±1.2% (at 25°C). It also supports a wide input voltage range from 3V to 20V and is ideal for applications powered by 3V, 4.5V, 5V, 6V, 8V, 9V, 10V, 12V, 15V and 20V. Moreover, XC6221B3317R-G combines low quiescent current and low dropout voltage performance with a high accuracy and fast transient response. It provides excellent thermal stability and line regulation. Other features include short-circuit protection, over-current protection, and current limiting for improved safety and protection of the device.