BP3108

Description BP3108 is a primary side regulation (PSR) controller with triac dimming designed for high brightness LED driver. It’s extremely suitable to be used in flyback converter operating in worldwide voltage range. BP3108 works in discontinuous inductive current mode. The patented control method dramatically saves the system cost and size by eliminating all secondary feedback circuitry and loop control compensation circuitry. This control method also achieves excellent line and load regulation. BP3108 integrates the triac dimming control circuit internally.Few external components are required to achieve wide triac dimming range and good dimming effect without visible flicker. BP3108 integrates high precision current sense circuitry, which achieves ±3% LED current accuracy. BP3108 offers rich protection features including LED short/open circuit protection, over-temperature protection, under-voltage lockout, VCC over voltage protection. BP3108 is assembled in SOP-8 package. Features  Triac Dimming  PSR constant current (CC) control，no secondary feedback circuit required  ±3% LED current accuracy  Ultra low operating current to improve efficiency  Low power consumption on FB resistor network  Worldwide voltage range  LED short/open circuit protection  VCC over voltage protection  Current sense resistor open circuit protection  Over temperature protection  No external loop compensation required Applications  Triac dimming LED lighting  GU10/E27 LED bulb, spot li...