Our Products
We offer you a variety of product choices.
  • Description
    The JW®1531B is a constant voltage constant current driver with high accuracy.
    JW1531B integrates high voltage power source, and can be supplied from line voltage directly, and auxiliary winding is not needed, which largely simplifies the system.
    Low standby consumption can be achieved with deep pulse frequency modulation. Critical conduction mode operation reduces the switching losses and largely increases the efficiency.  
    JW1531B has multi-protection functions which largely enhance the safety and reliability of the system, including VCC over-voltage protection, VCC UVLO, LED short protection and over- temperature protection. 
  • Features
    1.No auxiliary winding
    2.Supplied from line voltage directly
    3.High current accuracy of line and load regulation
    4.Low output current-ripple
    5.Critical conduction mode
    6.High efficiency over wide operating range
    7.Cycle-by-cycle current limit
    8.LED short protection
    9.Internal over-temperature protection
    10.SOP7 package
  • Specification
    1. Input Voltage: 90~264Vac
    2. PF>0.5
    3. Efficiency: up to 94%
  • Typical Application
Software and hardware support
Title Type FileType Size( KB) Date
EV1531B_R0.3 DEMO PDF 1.46MB 2018.12.12
Related Documents Download
Please send email to sales if you need full version of datasheet:
Sample Request
Sample Request
If you want to apply Joulwatt products, please contact 0571-89807321