高能效 3 A 同步降压双 LED 驱动器,带集成高压侧开关和电流感应,用于汽车前照明

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概览

NCV78825 是一款单芯片、高能效同步降压双 LED 驱动器,用于汽车前照明应用,如远光灯、近光灯、日间行车灯 (DRL)、转向指示灯、雾灯、静态转弯灯等。NCV78825 特别针对高电流 LED 而设计,为驱动最高 60 V 的 2 个 LED 串提供了完整方案。它包括了用于 LED 串的 2 个独立电流稳压器、汽车前照明所需的诊断功能,且所需外部组件数量极少 – 该芯片不需要任何外部感应电阻即可实现降压电流调节。可用输出电流和电压可根据各个 LED 串进行定制。如果 1 个模块上需要 2 个以上的 LED 沟道,则可以组合 2 个、3 个或多个器件 NCV78825;还可以组合 NCV787x3 器件 – NCV78825 的前代产品。由于 SPI 可编程能力,一个硬件配置可以支持多个应用平台。

  • High Beam
  • Low Beam
  • DRL
  • Position or Park Light
  • Turn Indicator
  • Fog
  • Static Cornering

  • Automotive

  • Single Chip
  • Buck Topology
  • 2 LED Strings up−to 60 V
  • High Current Capability up to 3 A DC per Output
  • Integrated High Side Switch
  • Low Side Pre−driver for External NMOS Device
  • High Overall Efficiency
  • Minimum of External Components
  • Integrated High Accuracy Current Sensing
  • Integrated Switched Mode Buck Current Regulator
  • Average Current Regulation Through the LEDs
  • High Operating Frequencies to Reduce Inductor Sizes
  • Low EMC Emission for LED Switching and Dimming
  • SPI Interface for Dynamic Control of System Parameters
  • Fail Safe Operating (FSO) Mode, Stand−Alone Mode
  • Master−Slave Synchronization Mode of the Buck Channels
  • NCV Prefix for Automotive and Other Applications RequiringUnique Site and Control Change Requirements; AEC−Q100Qualified and PPAP Capable
  • This is a Pb−Free Device

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NCV78825DQ0R2G

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Pb

A

H

P

SSOP-36 EP

3

260

REEL

1500

Y

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6

67

67

3800

350

$2.0307

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