ST Life.augmented


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

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.

pdf Please read
Errata Sheet
pdf 下载
Data Brief

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


图案 资源


Technical Documentation

Product Specifications

描述 版本 大小
DB1654: Driver for up to 40 white LEDs for mid-sized LCD display backlight based on the STLD41
2.0 215 KB

Hardware Resources

Board Manufacturing Specification

描述 版本 大小
STEVAL-TLL011V1 gerber files
1.0.0 65 KB

Bill of Materials

描述 版本 大小
1.0.0 9 KB

Schematic Pack

描述 版本 大小
STEVAL-TLL011V1 schematics
1.0.0 64 KB

样品 & 购买

产品型号 Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-TLL011V1ActiveSTLD41Buy Direct116.37Distributor reported inventory date: 2015-05-29
Distributor NameRegionStockMin. order

(*) 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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