BP2865 is different from BP2833.
BP2865e working principle: BP2865E is a high-precision step-down LED constant current driver chip. The chip works in the inductor current critical continuous mode and is suitable for non-isolated step-down LED constant current power supplies with a full range of input voltages from 85Vac to 265Vac. The BP2865E chip integrates a 500V power switch and adopts a patented drive and current detection method. The chip's operating current is extremely low, no auxiliary winding detection and power supply is required, and only a few peripheral components are required to achieve excellent constant current characteristics, which greatly This saves system cost and volume. The BP2865E chip works in the inductor current critical mode, and the output current does not change with changes in the inductance and LED operating voltage, achieving excellent load regulation. BP2865E has multiple protection functions, including LED open/short circuit protection, CS resistor short circuit protection, undervoltage protection, chip temperature overheating adjustment, etc. BP2833D is a high-precision step-down LED constant current driver chip. The chip works in the inductor current critical continuous mode and is suitable for non-isolated step-down LED constant current power supplies with a full range of input voltages from 85Vac to 265Vac.
The BP2833D chip integrates a 500V power switch and adopts a patented drive and current detection method. The chip's operating current is extremely low and does not require auxiliary winding detection and power supply. It only requires a few peripheral components to achieve excellent performance. The constant current characteristics greatly save the system cost and volume. The BP2833D chip has a high-precision current sampling circuit and uses patented constant current control technology to achieve high-precision LED constant current output and excellent line voltage regulation. The chip works in the inductor current critical mode, and the output current does not change with changes in the inductance and LED operating voltage, achieving excellent load regulation. BP2833D has multiple protection functions, including LED open/short circuit protection, CS resistor short circuit protection, undervoltage protection, chip temperature overheating adjustment, etc. BP2833D is packaged in DIP-8.