BP3166B

BP3166B High Precision PSR Constant Current LED Driver Description The BP3166B is a high precision primary-side feedback and regulation controller for LED lighting, it operates in constant current control mode and is designed to work in inductor current discontinuous conduction mode and especially suitable for flyback convertor under universal input. The BP3166B integrates a 650V power MOSFET, with patent pending MOSFET driving technique. It doesn’t need the auxiliary winding for VCC supply. It can achieve excellent constant current performance with very few external components, so the system cost and size are minimized. The BP3166B offers rich protections to improve the system reliability, including LED short circuit protection, thermal regulation function. Features  No VCC capacitor and no starting resistance  Integrated HV JFET for Power Supply  No Auxiliary winding for sensing and supplying  Universal input voltage  ±5% LED Output Current Accuracy  LED Short Protection  LED Open Protection  Thermal regulation function  Package：SOP7 Applications  LED Bulb  LED Candle Light  Other LED Lighting Typical Application NP NS AC BP3166B 4 HV 3 NC 2 GND 1 ROVP DRAIN 5 DRAIN 6 CS 7 Option Figure 1. Typical application circuit for BP3166B BP3166B_CN_DS_Rev.1.0 www.bpsemi.com 1 Bright Power Semiconductor Co. Confidential – Customer Use Only Ordering Information Part Number Package BP3166B SOP7 BP3166B High Precision PSR Constant Current LED Driver Ope...