The LN8K18 is a high‑performance AC/DC buck‑converter IC with integrated 650 V MOSFET, smartEnergy™ control and up to 300 mA output.
The LN8K18 is a high‑performance current‑mode switching regulator IC designed for non‑isolated buck converters in appliances and control boards. It integrates PWM/PFM hybrid control, a 650 V MOSFET, smartEnergy™ efficiency technology, and comprehensive protection features, operating from 85‑380 Vac and delivering up to 300 mA output.
The device is offered in DIP8 and SOP8 packages with a minimal external component count, standby power as low as 0.05 W, and a 12 V fixed output voltage. Ordering information and packaging details are provided for both DIP8 and SOP8 variants. This manual is written in Chinese.
| Rated Output Voltage | 12 V |
|---|---|
| Integrated MOSFET Voltage Rating | 650 V |
| Maximum Output Current | ≥300 mA |
| Standby Power Consumption | ≤0.05 W |
| Input Voltage Range | 85‑380 Vac |
| Control Architecture | PWM/PFM hybrid |
| Efficiency Technology | smartEnergy™ |
The LN8K18 provides a fixed 12 V output.
It can deliver up to 300 mA of output current.
Standby power can be as low as 0.05 W.
It operates from 85 Vac to 380 Vac.