The NCP163AFCS120T2G is an IC voltage regulator manufactured by ON Semiconductor. It is a low-drop-out (LDO) linear, fixed, 1.2V, 250mA regulator, packaged in a Wafer Level Chip Scale Package (WLCSP4) for surface-mount applications. It provides an output voltage accuracy of ±2% over line, load, and temperature conditions. This IC is particularly useful in battery-operated applications, due to its very low quiescent current of 50µA, which allows for long battery life. The device also offers thermal and short-circuit protection for greater reliability. Additionally, it features a wide operating temperature range from -40°C to +125°C. This IC provides high performance and tightly regulated output in a very small package.