The XC6221B102NR-G is a LDO (Low Dropout) Voltage Regulator manufactured by Torex Semiconductor. It is a high speed, low noise, 200mA Voltage Regulator. It is designed to provide low output voltages from a low input voltage source. The device includes precise voltage scanning, high ripple rejection, and low standby current. It also has over-current protection, over-temperature protection, and output enable functions. The XC6221B102NR-G is designed to operate at an input voltage range of 2.2 V to 6.5 V and an output voltage range of 0.9 V to 6.5 V. It has a maximum output current of 200 mA with a fast transient response time of less than 1 ms. The device is suitable for applications like mobile phones, PDAs, and other portable electronics.