APEK8514KLP-01-MH
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APEK8514KLP-01-MH

  • Category:Driver chip
  • Product Name:Wide input voltage range, high efficiency, fault-tolerant LED driver
  • Manufacturers:Allegro
  • Production Batch Number:15+
  • Encapsulation:DEMO BOARD
  • Stock Status:There is stock
  • Stock Quantity:8930
  • Minimum order quantity: 1
  • Details:点击查找APEK8514KLP-01-MH的pdf资料
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  • Product introduction

A8514是一款用于小尺寸 LCD 背光的多输出白光LED drivers。它整合了电流模式升压转换器与内部电源开关和四个灌电流。升压转换器可驱动多达 48 个 LED、每串 12 个 LED(每串 80 mA)。LED 灌电流可并联,以达到更高的 LED 电流,最高 320 mA。A8514 可在 5 V 到 40 V 的单一电源下运行,使该部件可承受汽车系统中出现的负载突降情况。

在出现故障时,A8514 可以驱动外部 P-FET 断开系统的输入电源。A8514 提供各种保护,包括输出短路和过电压、开路或短路二极管、开路或短路 LED 引脚、短路升压开关或电感器、短路 FSET 或 ISET 电阻器和 IC 过温保护。两级逐波限流功能可提供软启动和防止内部电流开关出现高电流过载。

A8514 通过同步引脚可以在 580kHz 到 2.3MHz 范围内同步 PWM 开关频率。高开关频率可使 A8514 在 AM 无线电波段以上运行。

A8514 采用 20 针 TSSOP 封装(后缀 LP),并安装有外露散热板,以提高散热功能。其封装均为无铅产品,且采用 100% 雾锡电镀。

  • 5 至 40 伏特宽输入电压范围,可满足启动/关闭、冷车启动和负载突降要求
  • LED 灌电流和升压转换器与 60 伏特 DMOS 完全整合
  • 同步功能可同步高达 2.3 MHz 的升压转换器开关频率,可在 AM 波段以上运行
  • 出色的输入电压瞬态响应
  • 单电阻器主级过电压保护最大程度减少 VOUT 泄露
  • 用于冗余保护的内部次级过电压保护
  • 每通道 80 mA 的 LED 电流
  • 驱动多达 12 个串联 LED(分为 4 个并联的串)
  • 0.7% 至 0.8% 的 LED 至 LED 匹配准确度
  • PWM 和模拟调光输入
  • 为可选的外部 PMOS 输入断开开关提供驱动器
  • 广泛的保护功能:
    • 短路升压开关或电感器保护
    • 短路 FSET 或 ISET 电阻器保护
    • 短路输出保护
    • 开路或短路 LED 引脚保护
    • 开路升压肖特基保护
    • 过温保护 (OTP)

 

andAPEK8514KLP-01-MHRelated ICs are:


Model Manufacturers lot number encapsulation illustrate
APEK8514KLP-01-MH Allegro 15+ DEMO BOARD Wide input voltage range, high efficiency, fault-tolerant LED driver
A8514KLPTR-T Allegro 15+ TSSOP-20 Wide input voltage range, high efficiency, fault-tolerant LED driver

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