The L-APP320S-3-2A13-DB is a component part made by LSI Corporation. It is a power factor control regulator IC that can be used to improve the performance of a power system. It is capable of providing a wide range of control from 0.55 to 1.08 for single phase applications, depending on the setup and system requirements. It is designed to operate in either normal or standby mode, with a maximum input frequency of 400 kHz, a minimum input voltage of 85 VAC, and a maximum output power of 4 kW. The operating temperature range is from -55°C to +125°C.