The XC6221A2017R-G is a low-dropout (LDO) voltage regulator made by Torex Semiconductor. It is a 1.2 V, 1.5 A, ultra-low power, low-dropout linear regulator. Its wide input voltage range of 1.6 V to 10 V and low output voltage ripple make it ideal for a variety of applications. This LDO regulator features a high-efficiency rating of up to 97% at 1 mA load, and a low-output noise rating of 17 µVrms. It also has a fast transient response and excellent line/load regulation. Its built-in circuit protection includes overload and short-circuit protection, and it is protected against overvoltage, reverse polarity, and reverse current. Additionally, its simple pin arrangement makes it easy to design and implement into small size applications.