BP3288 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 Buck-Boost structure. The BP3288 chip adopts gate drive and high-voltage power supply mode. With only a few peripheral components, it can achieve excellent constant current characteristics, greatly saving system cost and volume. BP3288 has multiple protection functions, including LED open-circuit protection (overvoltage protection), LED short-circuit protection, and chip temperature overheating adjustment.