TOP264VG — Power Integrations TOPSwitch‑JX Series Integrated Flyback Switcher IC

The TOP264VG is a high‑voltage integrated offline switching power IC from the TOPSwitch‑JX family by Power Integrations. It’s used to build efficient AC‑to‑DC flyback power supplies with low standby power and a minimal external component count. 

⚡ Overview

• Type: Offline AC‑DC switching regulator / flyback switch IC 

• Manufacturer: Power Integrations 

• Series: TOPSwitch‑JX 

• Package: Through‑hole eDIP‑12 / DIP‑12 

• Input Voltage: Universal mains AC – ~85 VAC to 265 VAC 

• Topology: Flyback converter 

• Internal Switch: Integrated high‑voltage MOSFET (~725 V rating) 

• Switching Frequency: Typically ~66 kHz or ~132 kHz (selectable) 

• Operating Temp Range: −40 °C to +150 °C