The SE5218ALG-LF is a Positive Fixed Low Dropout Regulator (LDO) manufactured by Seaward. It is a SOT-23-5 RoHS compliant, single-output regulator that provides a fixed regulated output voltage of 5.5V and 3.3V, up to 500mA of current output, and a maximum dropout voltage of 600mV. This LDO is suitable for use in applications such as automotive electronics, industrial control systems and consumer electronics. Its low quiescent current design, high power supply rejection ratio and low output noise suit it for noise-sensitive environments, and its tiny size enables its use in very compact designs. The SE5218ALG is protected against overheating, current overload and short circuits, virtually eliminating the risk of failure due to transient events. Additionally, it features low output ripple and fast transient response.