JW1779
DESCRIPTION
FEATURES
JW1779 is a non-isolated, constant output current step-down LED driver with 500V MOSFET integrated. Operating in the boundary mode makes it high efficiency and low radiation. Patented algorithms ensure good current accuracy and excellent line/load regulations with lowest BOM cost. JW1779 is supplied from the MOSFET drain directly, so the auxiliary winding is eliminated, which can light up the LED within 100m S. With unique sampling techniques, JW1779 has multi-protection functions which can largely enhance the safety and reliability of the system, including VDD UVLO, inductor short protection, LED short protection and over-temperature protection.
Integrate 500V, Low Rdson MOSFET
30Ohm,100m A maximum output current
Excellent line/load regulation Boundary mode operation High efficiency LED SCP VDD UVLO Over-temperature protection Brown Out Protection Inductor short protection TO-92 package
APPLICATIONS
LED lighting
TYPICAL APPLICATION
AC IN
JW1779 DRAIN
VDD...
