The RT9193-33GB is a Low Dropout Regulator (LDO) Positive Fixed 5.5V 3.3V 300mA SOT-23-5 manufactured by Richtek, providing a low voltage output of 300mV at 300mA with a 300mA current limit. It is RoHS certified and offers a high PSRR (Power Supply Rejection Ratio), low ground current, low temperature offset, high gain accuracy, low power consumption and is fast to respond to current changes. It is suitable for both post-regulation and pre-regulation applications, and is designed to provide reliable and stable operation in a wide range of applications.