The 639977-MIC5203-5.0YM5 is a linear voltage regulator designed for power management applications. It provides a fixed output voltage of 5V and has a maximum output current of 80mA. The regulator operates with an input voltage range of up to 16V and features an enable control. It offers protection against over current, over temperature, and reverse polarity conditions. The device is housed in a surface mount package, specifically the SC-74A or SOT-753 package. The MIC5203-5.0YM5 operates in a wide temperature range of -40°C to 125°C and is an active product from Micrel.