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3.5 W not-isolated offline constant current LED driver based on VIPER17HN
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The STEVAL-ILL017V1 demonstration board is a 2 W non-isolated offline constant current LED driver based on the VIPer17. The board operates with an input ranging from 176 V to 264 VAC and provides 500 mA of constant current from a 7 VDC source, suitable for illuminating two LEDs in series.

The VIPer17 device is an offline converter with an 800 V rugged power section, a PWM control, overcurrent protection, overvoltage and overload protection, hysteretic thermal protection, soft-start and safe auto-restart after the removal of a fault condition. The brown-out protection function is embedded into the high voltage start-up.

Burst mode operation and the very low consumption of the device combine to meet standby energy saving regulations. Advanced frequency jittering reduces EMI filter cost.

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Errata Sheet
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Data Brief

Key Features

  • Input voltage 220 VAC +/- 20%
  • 800 V avalanche rugged power section
  • Provides 500 mA constant current for LED
  • High precision constant current with +/- 5% tolerance (1 sense resistor and 2 resistor bridges with +/- 1% precision)
  • Overtemperature protection
  • LED open-circuit protection
  • LED short-circuit protection
  • PWM operation with frequency jittering for low EMI
  • Operating frequency:60 kHz for L type115 kHz for H type
  • Standby power < 50 mW at 265 VAC
  • Adjustable and accurate overvoltage protection
  • On-board soft-start
  • Safe auto-restart after a fault condition


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB0662: Offline constant current LED driver based on the VIPer17
1.1 121 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
Gerber files for STEVAL-ILL017V1 board
1.0 126 KB

Bill of Materials

Description Version Size
BOM for STEVAL-ILL017V1 board
1.0 15 KB

Schematic Pack

Description Version Size
Board schematics for STEVAL-ILL017V1 board
1.0 1,102 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ILL017V1ActiveVIPER17HNBuy Direct60.02Distributor reported inventory date: 2016-02-10
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA100

(*) 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.
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