ST Life.augmented


3 W non-isolated offline LED driver demonstration board based on the VIPer22A-E
  • active Active

The progress made in the field of LEDs is visible on an almost day-by-day basis. Many high power LEDs are currently on the market, such as 0.7 A and 1 A devices. However, the most commonly used LEDs are those with a current of 0.350 A.

This demonstration board is designed for 350 mA LEDs and is capable of driving three 1 W LEDs in series with high-precision constant current (± 5% tolerance). The design is based on the VIPer22AE, which combines a dedicated current mode PWM controller with a high voltage power MOSFET on the same silicon chip.

The internal control circuit offers a large input voltage range on the VDD pin, accommodates changes in auxiliary supply voltage, and supports automatic burst mode in low load conditions. The board also features protections against overtemperature, overcurrent and overvoltage conditions.

pdf Please read
Errata Sheet
pdf Download
Data Brief

Key Features

  • Input voltage: 90 to 265 VRMS
  • Provides 350 mA constant current for LEDs
  • Capable of driving 3 x 1 W LEDs in series with high-precision constant current (± 5% tolerance)
  • Overtemperature protection
  • LED open circuit protection
  • LED short-circuit protection
  • 230 VAC input version with no electrolytic capacitor
  • EN55015 & EN6100-3-2 compliant
  • RoHS compliant


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB0927: 3 W non-isolated offline LED driver demonstration board based on the VIPer22A-E
2.1 140 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
Gerber files for STEVAL-ILL026V1 board
1.0 181 KB

Bill of Materials

Description Version Size
BOM for STEVAL-ILL026V1 board
1.0 20 KB

Schematic Pack

Description Version Size
Board schematics for STEVAL-ILL026V1 board
1.0 11 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ILL026V1ActiveVIPER22ASTR-EBuy Direct64.92Distributor reported inventory date: 2016-02-10
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA30

(*) 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.
Feedback Form
Customer Feedback