Multi-channel LED driver with integrated boost controller for medium, large LCD panel backlight based on LED7708 and STM32F103C6T6A

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  • The purpose of the STEVAL-ILL035V1 demonstration board is to provide an application example of a compact LED backlight driver using the LED7708 device.

    The board is equipped with a 16-channel LED driver with integrated boost controller (the LED7708), power section components, and an STM32 microcontroller to easily control all the features via a USB connection.
    The output voltage required by the LED strings connected to the output channels is derived from a single input rail and continuously adjusted to minimize the voltage drop (and power dissipation) across them, despite an independent PWM duty cycle for each one. The brightness of each LED string is digitally controlled with 12- or 16-bit dimming resolution.
    Embedded, programmable fault detection and management circuitry can be set to automatically disconnect faulty channels without the need for intervention by the host controller.
    The board has been designed as a demonstration of a solution for medium/large LCD panel backlight drivers, but is suitable for any application involving several LEDs assembled in strings (e.g. advertisement panels, signs, gaming, etc.).

    Key Features

    • Wide DC input voltage: 10 V to 28 V
    • Integrated boost converter with adaptive output voltage for minimum power dissipation
    • Up to 92% boost converter efficiency
    • 16 channels with up to 85 mA/ch current capability and independent PWM brightness control
    • Up to 15 white LEDs per channel
    • On-board STM32 microcontroller for total device control through 4-wire serial interface
    • Embedded open-channel and LED short-circuit faults management
    • USB connection for device control through dedicated PC-GUI
    • Expansion connector to support slave devices (daughterboard)
    • RoHS compliant

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Part Number
Core Product
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
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STEVAL-ILL035V1 LED7708; STM32F103C6T6
Active
129.0 1 3A991A2 ITALY Check Availability

Distributor availability ofSTEVAL-ILL035V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6 1 Order Now
P&S ASIA/PACIFIC 1 1 Order Now
MOUSER WORLDWIDE 4 1 Order Now

Distributor reported inventory date: 2019-05-20

Distributor Name

DIGIKEY

Stock

6

Min.Order

1

Region

WORLDWIDE Order Now

P&S

Stock

1

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

4

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-05-20

Buy direct

STEVAL-ILL035V1

Core Product

LED7708; STM32F103C6T6

Marketing Status

Active

Unit Price (US$)

129.0*

Distributor availability ofSTEVAL-ILL035V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6 1 Order Now
P&S ASIA/PACIFIC 1 1 Order Now
MOUSER WORLDWIDE 4 1 Order Now

Distributor reported inventory date: 2019-05-20

Distributor Name

DIGIKEY

Stock

6

Min.Order

1

Region

WORLDWIDE Order Now

P&S

Stock

1

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

4

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-05-20

Unit Price (US$)

129

Quantity

1

ECCN (US)

3A991A2

Country of Origin

ITALY

(*) 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

Featured Products

Related Applications

LED Lighting and Controls

Embedded Software

    • Part Number

      STEVAL-ILL035Vx LED driver GUI & FW

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DB1657
      Multi-channel LED driver with integrated boost controller for medium, large LCD panel backlight based on LED7708 and STM32F103C6T6A
      1.0
      251.09 KB
      PDF
      DB1657

      Multi-channel LED driver with integrated boost controller for medium, large LCD panel backlight based on LED7708 and STM32F103C6T6A

    • Description Version Size Action
      AN4578
      16-channels LED driver with independent PWM dimming control based on LED7708
      2.0
      2.38 MB
      PDF
      AN4578

      16-channels LED driver with independent PWM dimming control based on LED7708

Hardware Resources

    • Description Version Size Action
      STEVAL-ILL035V1 gerber files 1.0
      666.67 KB
      ZIP

      STEVAL-ILL035V1 gerber files

    • Description Version Size Action
      STEVAL-ILL035V1 BOM 2.0
      64.17 KB
      PDF

      STEVAL-ILL035V1 BOM

    • Description Version Size Action
      STEVAL-ILL035V1 schematics 1.0
      97.5 KB
      PDF

      STEVAL-ILL035V1 schematics

Legal

    • Description Version Size Action
      Evaluation products license agreement 1.6
      74.12 KB
      PDF

      Evaluation products license agreement

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
STEVAL-ILL035V1
Active
CARD Industrial Ecopack2 -

STEVAL-ILL035V1

Package:

CARD

Material Declaration**:

Marketing Status

Active

Package

CARD

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com 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.