NXP brings high efficiency to 12V MR16 lamps with dimmable LED controller

THE NETHERLANDS & CHINA: NXP Semiconductors N.V. has unveiled the SSL3401 -- a dimmable single-stage controller IC for retrofit MR16 LED lamps using 12V AC mains.

The SSL3401 offers compatibility with an exceptionally wide range of dimmers and transformers -- working with over 80 percent of the most common combinations -- in a compact form factor that fits in all commonly used MR16 GU5.3 and AR111 housings and sockets. Supporting an ambient temperature range up to 105ºC, the SSL3401 also provides temperature rollback protection.

Based on NXP GreenChip technology, the SSL3401 generates a stable and accurate current while dimming down to below 5 percent of maximum light output in most common practical situations.

While maximum lamp power depends on the thermal design of the lamp, a typical 7W MR16 LED lamp using the SSL3401 achieves THD below 15 percent, power factor above 0.9, efficiency up to 78 percent and LED ripple current below ±10 percent.