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ZSLS7031 - Application Circuit
ZSLS7031 - Block Diagram
ZSLS7031 - Pinout


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 Specification

ArchitectureInput Voltage Range (V)Output Current Max (A)Channels (#)Advanced Features
Flyback,Buck,Buck-Boost15.00 - 300.0011

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. RangeCarrier TypeSample & Buy
ZSLS7031ZI1RActivePMG8MSOP8-40 to 85°CReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
ZSLS7031 Short-form Datasheet Short Form Datasheet PDF 68 KB Jan 26, 2016
ZSLS7031 Datasheet Datasheet PDF 1.02 MB Jan 26, 2016
User Guides & Manuals
ZSLS7031KIT-D1 Demonstration Kit Description Manual PDF 589 KB Apr 22, 2016
Apps Notes & White Papers
ZSLS7031 Application Note - Typical LED Driver Application Using Flyback Topology Application Note PDF 200 KB Apr 22, 2016
IDT CAD Altium Libraries for AID Products Rev 20160819 PCB Design Files ZIP 1.20 MB Aug 19, 2016

Evaluation Boards