The JW®1757A/B/C is a constant current LED
driver with high current accuracy which applies to single stage high PF buck LED
drivers. High voltage power MOS is integrated, which can
significantly simplify the design of LED lighting system.
JW1757A/B/C integrates high voltage power
source, and can be supplied by line voltage directly.
High accuracy of output current is achieved
by sampling the output current directly. Critical conduction mode operation
reduces the switching losses and increases the efficiency.
JW1757A/B/C has multi-protection functions which largely enhance the
safety and reliability of the system, including VCC over-voltage protection,
VCC UVLO, LED open protection, inductor short protection, pulse-by- pulse current
limit, over-temperature protection.