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HVLED805 based evaluation board: 4.2 W isolated LED driver with primary side current regulation
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The EVALHVLED805 is a demonstration board equipped with the new HVLED805 PWM current mode LED driver and is designed for European mains. It can control, with very good accuracy, from 1 to 3 LEDs having a nominal current of 350 mA. The HVLED805 has integrated high voltage startup and an 800 V power MOSFET. The high MOSFET's breakdown voltage allows very robust and reliable applications and reduces the size of the snubber and the relative power dissipation. Its accurate primary-current control eliminates the need of the optocoupler which impacts the cost, the compactness and the lifetime of the application while still maintaining a very good LED accuracy (below 5 %). Moreover, this converter, specifically designed for quasi-resonant (QR) flyback converters, enables very low turn-on losses and EMI emissions.

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Errata Sheet
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Data Brief

Key Features

  • Input voltage range (VIN): 185 - 265 VAC
  • Main frequency (fL): 50 - 60 Hz
  • Maximum (rated) output power: 4.2 W
  • Output: IOUT= 350 mA ± 5%
  • Over voltage = 12 V max
  • Current ripple < 10% IOUT
  • Minimum switching frequency in normal mode: 70 kHz
  • Target average efficiency (from 1 to 3 LEDs) > 70 %
  • Maximum input power in no-load < 100 mW


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1225: 4.2 W off-line LED driver with primary side regulation
2.0 571 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
Gerber files for EVALHVLED805 board
1.0.0 43 KB

Bill of Materials

Description Version Size
BOM for EVALHVLED805 board
1.0.0 38 KB

Schematic Pack

Description Version Size
Board Schematics for EVALHVLED805 board
1.0.0 54 KB

License Agreement

Description Version Size
Evaluation products license agreement
1.0 126 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
EVALHVLED805ActiveHVLED805Buy Direct24.5Distributor reported inventory date: 2016-02-29
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA50
Not compliant-

(*) 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.