Driving lighting systems with variable power requirements, NXP Semiconductors’ SSL2101 integrated dimmable mains LED driver (SSLD) operates in LED retro-fit lamps, LED modules, LED spots, down-lights, and LED strings for retail displays. The component can perform directly from a rectified mains power supply in combination with a phase cut dimmer, and offers non-isolated (buck) and isolated (fly-back) solutions in a single chip. The device includes a high-voltage power switch, an additional input that can be used to detect demagnetization of the inductive element; and on-time mode control and frequency control. The SSLD exhibits built-in overtemperature protection, short-winding protection, and overcurrent protection. Pricing is $1.50 each.