The SSL2103T/1 is a Switched Mode Power Supply (SMPS) Controller IC that operates in combination with a phase cut dimmer directly from the rectified mains. It is designed to drive LED devices. The device includes a circuit to allow direct start-up from the rectified mains voltage. It gives the application designer flexibility to - use an external power switch to allow the IC to provide any power and to use an external bleeder transistors to provide extended dimmer interoperability.
Easy migration to existing lighting control infrastructure
Supports most available dimming solutions
Optimized efficiency with valley switching managed by a built-in circuitry
Demagnetization detection
Over-temperature protection
Short-winding (SWP) and overcurrent protection (OCP)
Internal VCC generation allowing start-up from the rectified mains voltage
Natural dimming curve by logarithmic correction, down to 1%