Maxim MAX16831汽车电子HBLED驱动方案

2009-07-17 11:36:00 Maxim

Maxim公司的MAX16831是电流模式高亮LED(HBLED)驱动器,能控制两个外接N沟MOSFET. MAX16831集成了用来实现固定频率HBLED驱动器所需要的所有区块,可配置成降压,升压或降压/升压电流稳压器,并具有大范围调光控制. MAX16831可用在汽车外部照明如信号灯,后组合灯(RCL), 白天行车灯和雾灯,工业和建筑物照明,应急照明和采用RGB LED光源的投映仪.本文介绍了MAX16831的主要特性,方框图以及用做升压和降压模式的电路图.此外还介绍了MAX16831评估板的主要特性,电路图和所用元件列表.

The MAX16831 is a current-mode, high-brightness LED (HBLED) driver designed to control two external n-channel MOSFETs for the single-string LED current regulation. The MAX16831 integrates all the building blocks necessary to implement fixed-frequency HBLED drivers with wide-range dimming control. The MAX16831 is configurable to operate as a step-down (buck), step-up (boost), or step-up/-down (buck-boost) current regulator.
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