BP2870D is a constant current driver chip specifically designed for low PF floating ground Buck LED. It adopts full-cycle closed-loop sampling, which improves the constant current accuracy over a wide output range. BP2870D can achieve the function of current adjustment by DIP switch through an independent CS current signal sampling pin.
Advantage
Full-cycle sampling of inductor current, high constant current accuracy Excellent load regulation rate Supports ultra-wide output voltage load External NTC over-temperature current reduction High-precision current reference (+/-3%)
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