NXP Semiconductors today 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% of the most common combinations – in a compact form factor that fits in all common available 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% 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%, power factor above 0.9, efficiency up to 78% and LED ripple current below ±10%.