ST Life.augmented


9 W Triac dimmable, high power factor, isolated LED driver based on the HVLED815PF (for US market)
  • active Active

The STEVAL-ILL044V1 demonstration board showcases ST’s new LED driver chip, HVLED815PF. It solves the problem of low-cost drive circuitry for LED replacements for 40 W incandescent or equivalent compact-fluorescent lamps.

The HVLED815PF is a new integrated power controller using primary-side control to achieve LED current regulation within +/-5%. (It also has primary-side voltage regulation, used here for open load protection).

The device incorporates an 800 V avalanche-rated FET and fits in a standard SO-16 package. An internal startup circuit eliminates the need for external rapid-start circuitry.

The PFC-flyback power converter operates in transition mode for the highest efficiency and best use of components. With the addition of a few extra components the HVLED815PF is made to draw near-sinusoidal input current from the AC line. The circuit regulates LED current over a wide range of line voltage and LED string voltage, and is dimmable with standard Triac-based dimmers.

pdf Please read
Errata Sheet
pdf Download
Data Brief

Key Features

  • +/- 5% primary-side current regulation, no optocoupler
  • Fully isolated output
  • Low component count
  • Only 1 tight-tolerance component
  • High efficiency, >86%
  • High power factor >0.98
  • Low THD, < 20% over 90 V to 132 V range
  • Fits in 28 mm tubing
  • 9 W output, for light equal to range from 40 W to 60 W incandescent
  • Startup within 0.2 seconds
  • Dimmable over 90 V to 132 V voltage range
  • RoHS compliant


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1693: 9 W Triac dimmable, high power factor, isolated LED driver based on the HVLED815PF (for US market)
1.0 186 KB

Application Notes

Description Version Size
AN4129: STEVAL-ILL044V1: 9 W Triac dimmable, high power factor, isolated LED driver based on the HVLED815PF (for US market)
1.0 3,379 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
STEVAL-ILL044V1 gerber files
1.0 109 KB

Bill of Materials

Description Version Size
1.0 11 KB

Schematic Pack

Description Version Size
STEVAL-ILL044V1 schematics
1.0 51 KB

Publications and Collaterals


Description Version Size
Off-line LED driving solutions
1.0 738 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ILL044V1ActiveHVLED815PFBuy Direct55.12Distributor reported inventory date: 2016-02-29
Distributor NameRegionStockMin. order
Farnell Element14Order NowEUROPE21

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.