Introducing the L6562DTR, a highly efficient transition mode power factor corrector (PFC) controller designed to optimize power factor and improve overall energy efficiency. This integrated circuit (IC) brings together advanced features and exceptional performance in a compact and user-friendly package. The L6562DTR is specifically designed for use in various applications such as lighting, white goods, and computer power supplies. With a wide input voltage range and an internal start-up current source, this PFC controller can start up smoothly even in the presence of a small amount of line voltage. It also features an innovative multiplier and an optimized phase detector that ensures accurate regulation and negligible harmonic distortion. Equipped with a number of built-in protection features, including overvoltage, overload, and over-temperature protection, the L6562DTR guarantees a high level of reliability and safety. Additionally, it offers increased flexibility with adjustable frequency and soft start functions. With its excellent performance, superior energy efficiency, and comprehensive protection capabilities, the L6562DTR is the ideal choice for designers looking to meet the strict power factor correction requirements in their applications.