TOP244PN

The Power Integrations TOP244PN is an integrated offline switcher IC belonging to the TOPSwitch-GX family. It utilizes a proven topology to cost-effectively integrate a high-voltage power MOSFET, PWM control, and fault protection onto a single CMOS chip. This device is designed for flyback applications and offers features such as a 700V voltage rating, a selectable frequency between 66kHz and 132kHz, and a power output of up to 28W.

Key features include externally programmable current limit, integrated soft-start, line under-voltage and over-voltage detection, and frequency jittering for reduced EMI. The TOP244PN is suitable for applications requiring high design flexibility and energy efficiency, with extremely low consumption in remote off modes. It is packaged in an 8-PDIP-B through-hole configuration.

This component is designed to reduce system cost and improve performance by integrating multiple functions. Its design flexibility allows for a wider duty cycle and smaller input capacitors. The hysteretic thermal shutdown provides automatic fault recovery, and large thermal hysteresis prevents PC board overheating.