Linear LED Drivers | FAN5776

LED 驱动器，同步升压和串联/并联

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FAN5776 是一款同步、恒定电流 LED 驱动器，能够以五串，每串两个串联 LED 的配置驱动最多十个 LED。1.8 MHz 的开关频率针对小型应用进行了优化，允许使用极小型芯片电感器和电容器。为了实现安全性，该器件具有集成的过电压、过电流和高温关断保护。另外，如果电池电压过低，则会触发输入欠电压锁闭保护。FAN5776 由低漏、高压侧电源组成，能够从电池为 LED 进行高能效供电。该 LED 电流控制器使用一系列 RSET 电阻组成，这些电阻联接在芯片和接地上的内部电压参比之间。运行期间，FAN5776 在 PWM 调光关断循环期间会将升压稳压器电压保持在 COUT 状态，有助于最大程度减少噪声。

  • 同步电流模式升压转换器
  • 25 mA 时驱动多达 10 个LED，各以 5 串 LED（2 个 LED 为一串）的配置来驱动
  • 5 LED 输出:高侧电流源
  • 具有单独使能和PWM调光控制的3x2-LED通道和2x2-LED通道的两个默认组以支持各种照明应用，如：
  • 双LCD显示器背光，LCD显示器加键盘照明
  • 升压PFM模式最大化轻负载下的效率
  • 2.3 V 至 5.5 V 的输入电压范围
  • 1.8 MHz开关频率
  • 输入欠压闭锁(UVLO)
  • 输出过压保护 (OVP)
  • 短路和热关断保护（TSD）

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FAN5776UCX

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CAD Model

Pb

A

H

P

WLCSP-12

567ST

1

260

REEL

3000

N

5.5

250

2

5

Price N/A

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