ST Life.augmented


5-channel (2 LEDs in series per channel) step-up white LED driver demonstration board based on the STLED25
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The STEVAL-TLL013V1 demonstration board was designed to demonstrate the performance of the STLED25, a fixed frequency, high-efficiency, boost DC-DC converter with five parallel high-side current sources.

The STLED25 is able to provide 125 mA of total current with a maximum voltage of 7.5 V on each channel.

Each current source supports single or dual LED connections. The output voltage of the step-up converter is automatically set at 100 mV above the highest voltage required on any driver to guarantee the proper operation of the linear current sources. The device implements a self-test feature to detect any failure of the LEDs and to disable the related channel.

The failure status is reset as soon the IC is disabled. This mode of failure detection allows the device to continue operating driver channels that are operating normally, while avoiding excessive power consumption or associated thermal issues.

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Errata Sheet
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Data Brief

Key Features

  • Operating input voltage range from 2.3 V to 5.5 V
  • ± 7.5% LED current accuracy
  • Two LEDs in series per channel
  • High-side current source
  • Up to 125 mA of total LED current
  • 86% efficiency at 100 mA
  • PWM dimming with automatic shutdown time window
  • 2.5 MHz switching frequency
  • RoHS compliant


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1436: 5-channel (2 LEDs in series per channel) step-up white LED driver demonstration board based on the STLED25
1.1 98 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
STEVAL-TLL013V1 gerber files
1.0 21 KB

Bill of Materials

Description Version Size
1.0 72 KB

Schematic Pack

Description Version Size
STEVAL-TLL013V1 schematics
1.0 47 KB

License Agreement

Description Version Size
Evaluation products license agreement
1.0 126 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-TLL013V1ActiveSTLED25-69Distributor reported inventory date: 2016-02-29
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA20

(*) 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.