Isolated and Non-isolated Flyback LED Driver with Active PFC

The ZSLS7031 is a primary-side controlled, peak-current-mode high-brightness LED flyback driver that supports both isolated and non-isolated designs with active power factor correction (PFC). The device works at a constant frequency in discontinuous conduction mode to provide constant power to the output. It eliminates the need for an opto-coupler, TL431 shunt regulator, or any other type of secondary-side feedback device. It operates from a wide input voltage range of 85VAC to 265VAC. The ZSLS7031 integrates over-current and over-voltage protection, as well as a thermal shutdown to halt the switching action in the event of abnormally high operating temperatures.


  • High efficiency
  • Minimum bill of materials
  • Small form-factor package
  • No loop compensation required
  • Isolated and non-isolated applications
  • Power factor PF > 0.95 depending on application
  • Wide application input voltage range: 85V to 265VAC
  • Internal over-temperature protection
  • Output over-voltage protection (OVP)
  • Output over-current protection (OCP) on primary side

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Range Carrier Type Buy Sample
ZSLS7031ZI1R Active PMG8 MSOP 8 -45 to 105°C Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
ZSLS7031 Short-form Datasheet - Short Form Datasheet PDF 68 KB Jan 25, 2016
ZSLS7031 Datasheet - Datasheet PDF 1.02 MB Jan 25, 2016
User Guides & Manuals
ZSLS7031KIT-D1 Demonstration Kit Description - Manual PDF 589 KB Apr 21, 2016
Application Notes & White Papers
ZSLS7031 Application Note - Typical LED Driver Application Using Flyback Topology - Application Note PDF 200 KB Apr 21, 2016
IDT CAD Altium Libraries for AID Products Rev 20160819 - PCB Design Files ZIP 1.20 MB Aug 18, 2016

Evaluation Boards