LT3754
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LT3754

  • Category:LED driver
  • Product Name:16-channel x 50mA LED driver
  • Manufacturers:LT
  • Production Batch Number:11+
  • Encapsulation:QFN-32
  • Stock Status:There is stock
  • Stock Quantity:20000
  • Minimum order quantity: 1
  • Details:点击查找LT3754的pdf资料
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  • Product introduction

LT3754

16通道 x 50mA LED 驱动器

peculiarity

  • 高达 45V 的 LED x 50mA、16 通道 LEDdrive
  • 宽输入范围:6V 至 40V
  • 在 20mA 电流条件下实现 ±2.8% LED 电流匹配准确度 (典型值为 ±0.7%)
  • 高达 3000 : 1 的 True Color PWMTMDimming range
  • 可利用单个电阻器来设定 LED 电流 (10mA 至 50mA)
  • 即使在 PVIN> VOUT的情况下仍然保持对 LED 电流的调节作用
  • 输出适合于 LED VF以实现最佳效率
  • 提供针对开路 LED 串的故障标记和保护作用
  • 针对 VOUT短路的 LED 引脚保护
  • 可通过通道的并联来提供较高的 LED 电流
  • 可编程 LED 电流降额与温度的关系
  • 具可编程迟滞的准确欠压闭锁门限
  • 可编程频率 (100kHz 至 1MHz)
  • Can be synchronized to an external clock

description

LT®3754 是一款具有一个升压型 DC/DC 控制器的 16 通道 LED 驱动器,能够驱动高达 45V 的 LED。每个通道包含一个具有 ±2.8% LED 电流匹配准确度的准确电流吸收器。各通道遵循一个主控器可编程电流,以使每串 LED 提供 10mA 至 50mA 的 LED 电流。可以通过通道的并联来提供较高的 LED 电流。输出电压适合于 LED VF中的变化以实现最佳效率,而且,LED 开路故障不会影响连接 LED 串的运作。

LT3754 提供了一个高达 3000 : 1 的 PWM 调光范围和一个高达 25 : 1 的模拟调光范围。其工作频率可以利用单个电阻器来设置 (从 100kHz 至高达 1MHz),也可以同步至一个外部时钟。

该器件的其他特点包括:可编程最大 VOUT(用于提供 LED 开路保护)、一个故障标记 (负责指示 LED 开路)、可编程 LED 电流降额与温度的关系、微功率停机模式和内部软起动功能。LT3754 采用耐热性能增强型 5mm x 5mm 32 引脚 QFN 封装。

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