LTC3208
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LTC3208

  • Category:LED driver
  • Product Name:High current software configurable multi-display LED controller
  • Manufacturers:LT
  • Production Batch Number:11+
  • Encapsulation:QFN
  • Stock Status:There is stock
  • Stock Quantity:20000
  • Minimum order quantity: 1
  • Details:点击查找LTC3208的pdf资料
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  • Product introduction

LTC3208

High current software configurable multi-display LED controller

peculiarity

  • 1x/1.5x/2x 充电泵可提供高达 95% 的效率
  • 高达 1A 的总输出电流
  • 17 个电流源可用作主 (MAIN)、副 (SUB)、RGB、相机 (CAM) 和辅助 (AUX) LED 驱动器
  • 可采用二线式 I2C™ 接口来设置 LED 接通/关断、亮度等级和显示屏配置
  • 采用跨接电容器边缘速率控制的低噪声恒定频率操作
  • 自动充电泵模式切换
  • An internal soft-start feature limits inrush current during start-up and mode switching
  • Open/short LED protection
  • 短路/热保护
  • 用于 MAIN 和 SUB 显示屏的 256 种亮度状态
  • 用于 RGB 显示屏的 4096 种色彩组合
  • 5mm x 5mm 32 引脚 QFN 塑料封装
  • description

    LTC®3208 是一款高集成度多显示屏 LED 控制器。该器件包含一个 1A 的高效率、低噪声充电泵,用于给主、副、RGB、相机和辅助 LED 显示屏供电。LTC3208 只需小型陶瓷电容器和一个电流设定电阻器便可形成一个完整的 LED 电源和电流控制器。

    最大显示屏电流由单个外部电阻器来设定。每个显示屏的电流由一个精准的内部电流源来控制。所有显示屏的调光和接通/关断都是通过 I2C 串行接口来实现的。主显示屏和副显示屏可提供 256 个亮度等级,RGB 和相机显示屏可提供 16 个亮度等级。可通过 I2C 端口把 4 个辅助电流源独立地分配给由 CAM、SUB、MAIN 或 AUX DAC 所控制的显示屏。

    LTC3208 充电泵根据 LED 电流源两端的电压来优化效率。该器件加电后进入 1x 模式,并将在任一被使能的 LED 电流源开始进入压降状态时自动切换至升压模式。第一个压降将把器件切换至 1.5x 模式,随后的压降则把 LTC3208 切换至 2x 模式。该器件采用小巧的 5mm x 5mm 32 引脚 QFN 封装。

  • apply

    • 视频/采用 QVGA + 显示屏的照相手机

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