The HP6003S3-33 is a dropout regulator (LDO) SOT23 RoHS manufactured by Hypower Microelectronics. It is a very small, low-power, CMOS-based linear voltage regulator, designed to provide positive voltage output regulation for circuits requiring very low dropout voltage performance. It offers adjustable output voltage range, low quiescent current, fast turn-on time, and other features found in linear regulator applications. It is RoHS compliant, and is capable of dropping supply voltage down to as low as 0.5V. The HP6003S3-33 also offers superior temperature protection, and can withstand extreme temperatures up to 125°C. It is also equipped with a current limit, short circuit protection, and a thermal shut down circuit.