Digitally controlled LED driver board for automotive lighting applications

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  • The AEK-LED-21DISM1 LED driver board is designed for high brightness automotive LED front lighting applications according to the AutoDevKit initiative. It can control four LED strings through two embedded L99LD21 flexible LED drivers with high efficiency boost controller and two embedded buck converters.

    The boost controller section in each L99LD21 LED driver integrates a high current gate driver for an external N-channel MOSFET and delivers a constant output voltage to two integrated buck converters. The boost controller of two devices can be stacked to allow dual phase operation for high power applications, with an interleaving pattern for improved input current ripple and current load sharing. The buck converter integrates an N-channel MOSFET driven by a bootstrap circuit.
    The board uses SPI communication with an external microcontroller via a 12-pin male connector, and a special Limp Home Mode implemented in the L99LD21 driver ensures that active communication with the MCU is regularly monitored. You can use the AutoDevKit library extension for the SPC5-Studio development environment to install board firmware drivers that are immediately compatible with SPC5-family MCUs.
    The overall package is designed to address automotive lighting applications, including high beams and low beams, daytime running lights, turn indicators, position lights, side markers and fog lights.

    Key Features

    • Two embedded L99LD21 high power LED drivers able to supply four independent channels
    • Output current up to 1.69 A each channel
    • Input operating voltage range from 5.5 V to 24 V
    • Programmable via SPI, allowing accurate LED current setting
    • Protections and diagnostics for output short-circuit and open-load, overtemperature, and battery undervoltage.
    • Automotive Limp-Home Mode support
    • Board size: 81 x 100 mm. Maximum components height: 11 mm
    • WEEE and RoHS compliant
    • All ST components are qualified Automotive grade
    • Board designed according to the AutoDevKit initiative

Sample & Buy

Part Number
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
AEK-LED-21DISM1
Active
78.0 1 EAR99 ITALY Check Availability

Distributor availability ofAEK-LED-21DISM1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 20 1 Order Now
AVNET AMERICA 10 0 Order Now
FUTURE WORLDWIDE 10 1 Order Now
MOUSER WORLDWIDE 20 1 Order Now

Distributor reported inventory date: 2019-11-14

Distributor Name

DIGIKEY

Stock

20

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

10

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

10

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

20

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-14

Buy now

AEK-LED-21DISM1

Marketing Status

Active

Unit Price (US$)

78

Unit Price (US$)

78.0*

Distributor availability ofAEK-LED-21DISM1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 20 1 Order Now
AVNET AMERICA 10 0 Order Now
FUTURE WORLDWIDE 10 1 Order Now
MOUSER WORLDWIDE 20 1 Order Now

Distributor reported inventory date: 2019-11-14

Distributor Name

DIGIKEY

Stock

20

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

10

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

10

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

20

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-14

Quantity

1

ECCN (US)

EAR99

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

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      AutoDevKit library plugin for SPC5-STUDIO

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      Adaptive front lighting connector board with VIPower board slot

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DB3929
      Digitally controlled LED driver board for automotive lighting applications
      1.0
      442.32 KB
      PDF
      DB3929

      Digitally controlled LED driver board for automotive lighting applications

Hardware Resources

    • Description Version Size Action
      AEK-LED-21DISM1 GERBER 1.0
      239.73 KB
      ZIP

      AEK-LED-21DISM1 GERBER

    • Description Version Size Action
      AEK-LED-21DISM1 BOM 1.0
      54.17 KB
      PDF

      AEK-LED-21DISM1 BOM

    • Description Version Size Action
      AEK-LED-21DISM1 SCHEMATIC 1.0
      176.53 KB
      PDF

      AEK-LED-21DISM1 SCHEMATIC

Legal

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

      Evaluation products license agreement

Part Number Marketing Status RoHS Compliance Grade WEEE Compliant Material Declaration**
AEK-LED-21DISM1
Active
Ecopack2 Yes

AEK-LED-21DISM1

Package:

Ecopack2

Material Declaration**:

Marketing Status

Active

RoHS Compliance Grade

Ecopack2

WEEE Compliant

Yes

(**) 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.