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LTC3214
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LTC3214

  • 所属类别：LED驱动
  • 产品名称：500mA 相机 LED 充电泵
  • 厂商：LT
  • 生产批号：11+
  • 封装：DFN
  • 库存状态：有库存
  • 库存量：20000
  • 最低订购量：1
  • 详细资料：点击查找LTC3214的pdf资料
  • 点击询价
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  • Product Introduction

LTC3214

500mA camera LED charging pump

dot

  • 低噪声恒定频率操作
  • 高效率：高达 94%
  • 多模式运作：1x、1.5x 或 2x 升压模式
  • 自动模式切换
  • 高输出电流：高达 500mA
  • 纤巧型应用电路 (3mm x 3mm DFN 封装，所有元件的高度均
  • 自动软起动
  • 输出断接
  • 开路、短路 LED 保护
  • 无电感器
  • 内部 110mΩ LED 电流检测电阻器
  • 3mm x 3mm 10 引脚 DFN 封装

    description

    LTC®3214 是一款低噪声、高电流充电泵 DC/DC 转换器，能够从一个 2.9V 至 4.5V输入以高达 500mA 的电流来驱动高电流 LED。低外部元件数目 (两个跨接电容器、一个编程电阻器以及位于 VIN 和 CPO 引脚上的两个旁路电容器) 使得 LTC3214 非常适合于小型、电池供电式应用。

    内置软起动电路用于防止在启动期间产生过大的浪涌电流。高开关频率允许使用小的外部电容器。

    输出电流水平利用一个外部电阻器来设置。LED 电流采用一个内部 110mΩ 检测电阻器来调节。自动模式切换功能通过监视充电泵两端的电压、并且仅在检测到压差时切换模式而实现了效率的优化。该器件采用扁平 3mm x 3mm 10 引脚 DFN 封装。

    apply

    • 蜂窝电话、PDA 和数码相机的 LED 手电筒/相机照明灯电源
    • 普通照明和/或闪光灯/频闪观测器应用
  •  

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