LYTSwitch™-7 family phase-cut dimmable single-stage LED driver IC with combined PFC and constant current output for buck topology is ideal for single-stage, high PF, constant current LED dimmable applications. The family incorporates a high-voltage MOSFET with a variable on-time CrM controller. Extensive protection features with minimum external components provide industry leading power density and functionality. The CrM operation results in low turn-on losses and reduces cost of output diode (slower reverse-recovery type can be used). LYTSwitch-7 devices are suitable for applications from 4W to 22W. LYTSwitch-7 peak current mode operation is suitable for TRIAC applications without the need for an active bleeder. Over-temperature shutdown provides protection during fault conditions. Thermal foldback ensures that light continues to be delivered at elevated temperatures.