MSMBJ8.5CA is an 8.5 V, 500 mA surface mount voltage regulator in SOT-89 package by Microchip. It is a fixed output, low-dropout surface mount voltage regulator designed for use in mobile and other space-limited applications where a small size and very low dropout voltage are required. It is designed to regulate the supply voltage in a wide range of power applications with output current up to 500 mA. It features a high PSRR to reduce noise susceptibility, low quiescent current operation and low output noise. It includes input voltage protection, over-temperature protection, and over-current protection while operating in a very small package.