BP3189A is a high-precision two winding, low PF primary feedback constant current driver suitable for a full range of input voltages from 90Vac to 277Vac. The BP3189A chip uses differential sampling to detect the output voltage and demagnetization signal, which can achieve two winding isolation applications while ensuring excellent OVP accuracy. The BP3189A chip adopts advanced primary constant current control technology, which does not require secondary feedback loops and loop compensation capacitors to achieve excellent constant current characteristics, greatly saving system costs and volume. 

Advantages: Built in high-voltage start-up and power supply, fast start-up speed, high-precision current reference, high-precision no-load voltage reference, excellent load adjustment rate and linear adjustment rate, critical continuous conduction mode and quasi resonant mode, EMC optimized VCC undervoltage and overvoltage protection, cycle by cycle current limiting, and perfect protection function

Application areas: LED bulb light, LED tube light, other LED lighting