BP3276C is an LED driver chip with high efficiency and high PF value that supports triac dimming. The chip operates in the critical continuous conduction mode of inductive current and is suitable for LED driver power supplies with Boost structure. The BP3276C chip integrates a 500V power switch internally. Adopting gate drive and high-voltage power supply mode, it can achieve excellent constant current characteristics with only a few peripheral components, greatly saving system cost and volume. BP3276C has multiple protection functions, including LED open-circuit protection (overvoltage protection), chip temperature overheating adjustment, etc. BP3276C is packaged in SOP-8.