부품번호 : BP2822
기능 : Non-isolated Buck LED constant current controller ( 정전류 LED 컨트롤러 )
제조사 : BPS Confidential ( www.bpsemi.com )
BP2822 is a precision LED constant current control chip, application In non-isolated buck LED power supply system for a full range of AC input voltage 12V ~ 600V or DC voltage input.
BP2822 integrated 600V power MOSFET, requires very little Peripheral components, you can achieve excellent constant current characteristic. Current sampling circuits BP2822 chip with high-precision, while It uses a patented constant current control technology, high-precision LED Constant current output and excellent line regulation. Chip inductor in Current critical mode, the system does not vary with the output current and inductance LED Operating voltage changes, achieve excellent load regulation. BP2822 using patented source driver technology, chip operating current Only 200uA, no auxiliary winding power supply, simplifying design, reducing System cost.
1. Critical mode, without inductance compensation
2. Built-in 600V power MOSFET
3. Source driver, without auxiliary power winding
4. Up to ± 3% LED current accuracy
5. System efficiency up to 93%
6. LED short-circuit protection
7. CS sense resistor short protection
8. Over temperature protection
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