ST Life.augmented

STEVAL-ILL021V1

LCD panels backlight demonstration board based on the LED7707
  • active 活性

This demonstration boards is based on the LED7707 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 85 mA and can be dimmed via a PWM signal (1% of minimum dimming duty cycle at 1kHz 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.

pdf Please read
Errata Sheet
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Data Brief

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 control250 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
  • Features backlight driver sectionsix rows with 85 mA maximum current capability (adjustable)up to 10 white LEDs per rowrows disable optionless than 10 μs minimum dimming time±2.0% current matching between rowsLED failure (open and short circuit) detection
  • RoHS compliant

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图案 资源

顶部

Technical Documentation

Product Specifications

描述 版本 大小
pdf
DB0822: LCD panels backlight demonstration board based on the LED7707
1.1 252 KB

Hardware Resources

Board Manufacturing Specification

描述 版本 大小
zip
Gerber files for STEVAL-ILL021V1 board
1.0 92 KB

Bill of Materials

描述 版本 大小
pdf
BOM for STEVAL-ILL021V1 board
1.0 54 KB

Schematic Pack

描述 版本 大小
pdf
Board schematics for STEVAL-ILL021V1 board
1.0 33 KB

样品 & 购买

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产品型号 Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ILL021V1ActiveLED7707Buy Direct57.87Distributor reported inventory date: 2014-07-24
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA20
Farnell Element14Order NowEUROPE21
DIGIKEYOrder NowWORLDWIDE41
MOUSEROrder NowWORLDWIDE31
Ecopack2-

(*) 建议零售价格仅用于预算,以美元为单位,每。的报价,以当地货币计算的价格,请联系您当地的 ST 销售办事处 或我们的 分销商
(**) 材料声明表格上提供st.com可以是一般的文件,根据最常用的包,包内的家庭。出于这个原因,他们可能不是100%准确,对于一个特定的设备。请联系我们 销售支持 在特定设备上的信息。
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