Offline Step-down LED Regulator with PFC and High Voltage MOSFET

Topology: Buck
Input Voltage (min.): 90.00 V
Input Voltage (max.): 264.00 V
Output 1: 60.00 V / 0.120 A


EV1766A is a 60V/120mA LED driver EVB based on JW1766A.The JW1766A is a constant current LED regulator with high current accuracy which applies to single stage step-down power factor corrected LED drivers. 600V power MOS is integrated, which can significantly simplify the design of LED lighting system.High accuracy of output current is achieved by sampling the output current directly. Critical conduction mode operation reduces the switching losses and largely increases the efficiency.JW1766A is supplied from the output directly, and auxiliary winding is not needed.JW1766A has multi-protection functions which largely enhance the safety and reliability of the system, including VCC over-voltage protection, VCC UVLO, short-circuit protection, LED open protection, cycle-by-cycle current limit and over-temperature protection.


  • No auxiliary winding
  • 600V high voltage MOSFET integrated
  • High current accuracy of line and load regulation
  • High power factor with low output
  • current-ripple
  • Critical conduction mode
  • High efficiency over wide operating range
  • Cycle-by-cycle current limit
  • LED short protection
  • LED open protection
  • Over-temperature protection
  • Compact SOP7 package


  Order Code SPEC Product series L
RDC typ.
RDC max.
Montageart Samples
768772152 PDF WE-TI HV Radial Leaded Wire Wound Inductor (High Voltage) 1500 0.38 0.4 2.6 3 1.5 THT