DC-DC LED Drivers | NCV78825
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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