The BP3133A is a high precision primary side feedback LED constant current driver chip. The chip operates in the inductor current interrupt mode and is suitable for a full-range input voltage of 85Vac~265Vac and a flyback isolation LED constant current power supply with power <7W. The internal integrated 650V power switch uses the primary side feedback mode, eliminating the need for a secondary feedback circuit and no compensation circuitry. Multiple protection functions, including LED open/short protection, CS resistor short circuit protection, undervoltage protection, chip temperature overtemperature regulation, etc.

Features:
1. Internally integrated 650V power tube
2. Primary side feedback constant current control, no secondary feedback circuit
3. No transformer auxiliary winding detection and power supply
4. LED open circuit voltage can be adjusted by external resistor
5. Chip ultra-low operating current
6. Wide input voltage
7. ±4% LED output current accuracy
8. LED short circuit / open circuit protection
9. CS resistor short circuit protection
10. Chip supply undervoltage protection
11. Overheat adjustment function
12. SOP-8 package

application
 GU10 LED spotlight
 LED Bulb
 Other LED lighting

Please e-mail us for more information