LCD panels backlight demonstration board based on the LED7706

This demonstration board is based on the LED7706 and implements a high efficiency monolithic boost converter and six controlled current generators (rows) specifically designed to supply LEDs arrays used in the backlight of LCD panels.

The device can manage an output voltage up to 36 V (i.e. ten white-LEDs per row).

The generators can be externally programmed to sink up to 30 mA and can be dimmed via a PWM signal (1% dimming duty cycle at 20 kHz can be managed).

The device allows to detect and manage the open and shorted LED faults and to let unused rows floating.

Basic protections (output overvoltage, internal MOSFET overcurrent and thermal shutdown) are provided.

Key Features

  • Features boost section4.5 V to 36 V input voltage rangeinternal power MOSFETinternal +5 V LDO for device supplyup to 36 V output voltageconstant frequency peak current-mode control200 kHz to 1 MHz adjustable switching frequencyexternal sync for multi-device applicationpulse-skip power saving mode at light loadprogrammable soft-startprogrammable OVP protectionsingle ceramic output capacitornon-latched thermal shutdown
  • RoHS compliant
  • Features backlight driver sectionsix rows with 30 mA maximum current capability (adjustable)pp to 10 white LEDs per rowrows disable optionless than 500 ns minimum dimming time (1% minimum dimming duty-cycle at 20 kHz dimming frequency)±2.0% current matching between rowsLED failure (open and short circuit) detection

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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
DB0821 DB0821: LCD panels backlight demonstration board based on the LED7706 1.1 252 KB

ハードウェアリソース

Board Manufacturing Specifications
Description バージョン サイズ
Gerber files for STEVAL-ILL020V1 board 1.0 92 KB
Bill of Materials
Description バージョン サイズ
BOM for STEVAL-ILL020V1 board 1.0 53 KB
Schematic Packs
Description バージョン サイズ
Board schematics for STEVAL-ILL020V1 board 1.0 32 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-ILL020V1 LED7706 Active 55.13 1 NEC EAR99 ITALY MORE INFO 直接購入 買い物かごに追加 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-ILL020V1 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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