The APV1122J is a bipolar linear IC from Panasonic. It is a low-voltage, high-current amplifier IC that combines both voltage and current regulation. This IC is used in various power supply and amplifier applications, ranging from audio electronics such as power amplifiers and audio signal preamplifiers, to industrial applications such as DC/DC converters, motor drivers, and voltage regulators for high-current loads. The APV1122J features an on-board error amplifier with a gain of 11, allowing it to precisely monitor and control the output current and voltage. It also features a wide output voltage range of 0.5V to 30V and an adjustable output current limit from 0.2A up to 3A. Other features include overvoltage protection, thermal shutdown, overcurrent protection, and an undervoltage lockout function.