5-channel (2 LEDs in series per channel) step-up white LED driver demonstration board based on the STLED25

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.

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

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デザイン

技術文書

製品スペック
Description バージョン サイズ
DB1436 DB1436: 5-channel (2 LEDs in series per channel) step-up white LED driver demonstration board based on the STLED25 1.1 97 KB

ハードウェアリソース

Board Manufacturing Specifications
Description バージョン サイズ
STEVAL-TLL013V1 gerber files 1.0 20 KB
Bill of Materials
Description バージョン サイズ
STEVAL-TLL013V1 BOM 1.0 72 KB
Schematic Packs
Description バージョン サイズ
STEVAL-TLL013V1 schematics 1.0 47 KB

法務

ライセンス契約
Description バージョン サイズ
Evaluation products license agreement 1.0 125 KB
サポート & コミュニティ
関連アプリケーション

サンプル & 購入

製品型番 Core Product Marketing Status Unit Price (US$) * 数量 ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STEVAL-TLL013V1 STLED25 Active 69 1 NEC EAR99 ITALY MORE INFO DISTRIBUTOR AVAILABILITY
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(*) 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

品質 & 信頼性

製品型番 Marketing Status パッケージ Grade RoHS Compliance Grade Material Declaration**
STEVAL-TLL013V1 アクティブCARDIndustrialEcopack2
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(**) 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.

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