The LM2940S-5.0 is a Low Dropout Regulator (LDO) manufactured by HTC Korea and comes in a SOT-223-3L RoHS package. It is designed to provide a constant output voltage in a range from 2.5V to 10.0V with a maximum load of up to 1.0A. This LDO regulator has low-dropout voltage, fast transient response, and high PSRR. It also features over-current protection, over-temperature protection, and a short-circuit protection to ensure safe, reliable operation. It is suitable for use in a variety of applications such as portable devices, hand-held computers, consumer electronics, and LED drivers.