Triac dimmable LED lamp driver cuts costs

The AP1695 LED lamp driver optimizes the design of sub-12-W triac dimmer-compatible LED lamps with a dimming range of 1 to 100% and offers up to 30% reduction in bill of materials. For 120- and 230-V mains-dimmable retrofit LED lamps, such as the common 5-W GU10 and 8-W energy-saver bulbs, the lamp driver uses a patented constant on-time control technique to enable deep triac dimming down to 1% and an increase in lamp/triac compatibility. Its dimming curve complies with the NEMA SSL6 standard and the driver is fully compliant with the requirements of the IEC6100-3-2 harmonic standard.

The LED lamp driver is a single-stage device integrating a 500-V high-voltage MOSFET into the SO-7 package. This device employs PFM technology to regulate output current up to a 230 mA, while maintaining a power factor > 0.9 and a THD rating