The UA78L05AIPK Fixed Positive Voltage Regulator is a 5V, 100mA linear voltage regulator manufactured by Texas Instruments. This particular voltage regulator is a surface mount device, and is designed to regulate the output voltage in a wide range of applications, including power supply, battery chargers, and converters. It features a wide input voltage range of 1.5V to 15V, and a low dropout voltage of 0.3V. It is also capable of delivering up to 100mA of continuous output current. It includes overcurrent and thermal shut down protection, as well as internal current limiting, making it exceptionally reliable. The UA78L05AIPK is RoHS compliant, has a SOT-89 package, and is available in various pin configurations.