This document provides a design guide for a TRIAC dimmable LED driver using FL7730. It discusses the advantages of using LEDs as a replacement for conventional lighting systems and addresses the compatibility issues between TRIAC dimmers and LED bulbs.
This document serves as a design guide for implementing TRIAC dimmable LED drivers using the Fairchild Semiconductor FL7730 controller. It addresses the challenges of dimmer compatibility, specifically focusing on maintaining adequate latching and holding currents to prevent flicker and misfiring in low-power LED applications.
An LED bulb consuming less than 20W should interact with those dimmers composed of high-power devices.
The typical range of latching and holding currents is around 5 to 50mA.
The test conditions were an input voltage of 230V AC and an output power of 8W.