The BP2866C, manufactured by 晶丰明源半导体, is a high precision buck constant current LED driver designed for universal input offline LED lighting applications. Operating in critical conduction mode, this component is suitable for 85Vac~265Vac input and integrates a 500V power MOSFET. It features patented demagnetization detection technology and high-voltage JFET power supply technology, eliminating the need for a VCC capacitor and starting resistors, thereby minimizing system cost and size. The BP2866C offers precise output current and excellent line regulation through a patent-pending current control method. It includes robust protection functions such as LED short circuit protection, VCC under voltage protection, and thermal regulation. Available in a SOP7 package, it ensures a +5% LED output current accuracy and is ideal for applications like LED candle lights and bulbs.