Driver for up to 40 white LEDs for mid-sized LCD display backlight based on the STLD41

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  • The STEVAL-TLL011V1 demonstration board demonstrates the performance of the STLD41, a boost converter that operates from 3.0 V to 21 V and which can provide an output voltage as high as 38 V.

    It can drive up to 40 white LEDs connected in 4 strings of 10 LEDs in series. The total output current capability is 120 mA at an output voltage of 38 V.
    Regulation is performed by the internal error amplifier which works with the feedback voltage from the sensing resistor.
    The device can be turned ON/OFF by way of the logic signal connected to the EN pin.
    The LEDs can be dimmed by applying a PWM signal to the PWM input.

    Key Features

    • Boost DC-DC converter
    • Drives up to 40 LEDs (4 strings of 10) with a total current up to 120 mA
    • Input voltage range: 3.0 V to 21 V
    • Output current control
    • 1.8 MHz fixed frequency PWM control
    • PWM input for output current dimming with a frequency range of 25 kHz - 50 kHz
    • 2 A integrated switch
    • Overvoltage protection
    • Chip overtemperature detection and protection
    • Less than 1 μA standby current
    • Soft-start function
    • RoHS compliant

Sample & Buy

Part Number
Core Product
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
STEVAL-TLL011V1 STLD41
Active
121 1 EAR99 ITALY Check Availability

Distributor availability ofSTEVAL-TLL011V1

Distributor Name
Region Stock Min. Order Third party link
P&S ASIA/PACIFIC 1 1 Order Now

Distributor reported inventory date: 2019-09-12

Distributor Name

P&S

Stock

1

Min.Order

1

Region

ASIA/PACIFIC Order Now

Distributor reported inventory date: 2019-09-12

STEVAL-TLL011V1

Core Product

STLD41

Marketing Status

Active

Unit Price (US$)

121.0*

Distributor availability ofSTEVAL-TLL011V1

Distributor Name
Region Stock Min. Order Third party link
P&S ASIA/PACIFIC 1 1 Order Now

Distributor reported inventory date: 2019-09-12

Distributor Name

P&S

Stock

1

Min.Order

1

Region

ASIA/PACIFIC Order Now

Distributor reported inventory date: 2019-09-12

Unit Price (US$)

121

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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00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DB1654
      Driver for up to 40 white LEDs for mid-sized LCD display backlight based on the STLD41
      2.0
      215.45 KB
      PDF
      DB1654

      Driver for up to 40 white LEDs for mid-sized LCD display backlight based on the STLD41

Hardware Resources

    • Description Version Size Action
      STEVAL-TLL011V1 gerber files 1.0
      65 KB
      ZIP

      STEVAL-TLL011V1 gerber files

    • Description Version Size Action
      STEVAL-TLL011V1 BOM 1.0
      8.99 KB
      PDF

      STEVAL-TLL011V1 BOM

    • Description Version Size Action
      STEVAL-TLL011V1 schematics 2.0
      63.55 KB
      PDF

      STEVAL-TLL011V1 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-TLL011V1
Active
CARD Industrial Ecopack2 -

STEVAL-TLL011V1

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.