The LM3445 from National Semiconductor enables a full 100:1 range of offline, uniform, flicker-free dimming for high-brightness LEDs with a conventional TRIAC forward or reverse phase-control wall ...

LYTSwitch-3 single-stage LED driver ICs from Power Integrations work with both leading-edge and trailing-edge TRIAC dimmers and support isolated ballast topologies, as well as nonisolated lamp designs ...

Ideal for bulbs, tubes and downlights up to 20 watts, LYTSwitch-3 ICs offer excellent dimming performance with both leading-edge and trailing-edge TRIAC dimmers, and support both isolated and non ...

A basic LED driver circuit cannot be dimmed from a triac-based dimmer without some additional components being added to enable stable dimmer operation and then to adjust the output current based on ...

writes Rich Miron Dimming performance of LED lamps in legacy TRIAC-based dimmers is one of the biggest challenges for LED lighting designers. In many cases, this causes flickering and reduced dimming ...

A PIC controls a triac connected across the supply by monitoring power line zero-crossing. The PIC controls dimming by delaying the time the triac fires, which trims the peaks off of the AC waveform.