PT4209 Description
The PT4209 is a flicker-free PWM/analog dimmable, primary side constant current controller which can achieve high power factor in a single stage converter, targeted to applications in solid state lighting. It is designed for the flyback topology, and regulates output current accurately without the secondary feedback loop. PT4209 works in quasi-resonant mode to reduce the MOSFET switching loss.
PT4209 Key Features
- Constant Current Control Without Secondary Feed back Flicker-free PWM/analog Dimming (10%-100%) Accurate Constant Curren