Maxim MAX16834 112W长串LED驱动参考设计
Maxim公司的MAX16834是电流模式高亮LED（HB LED）,可采用升压,升压－降压,SEPIC和高边降压拓扑．除了能驱动用于开关控制的N沟功率MOSFET,还能驱动Ｎ沟PWM调光开关，输入工作电压4.75V到28V，工作频率100kHz-1MHz,3000:1 PWM调光/模拟调光，主要用在单串LED LCD背光，汽车前后灯照明，投映系统RGB LED光源，DC/DC升压／升-降压转换器以及MR16,M111照明灯．本文介绍了MAX16834主要特性，方框图，各种应用电路以及采用全陶瓷电容的112W长串LED升压驱动器参考设计特性，电路图，PCB布局图．
The MAX16834 is a current-mode high-brightness LED (HB LED) driver for boost, boost-buck, SEPIC, and highside buck topologies. In addition to driving an n-channel power MOSFET switch controlled by the switching controller, it also drives an n-channel PWM dimming switch to achieve LED PWM dimming. The MAX16834 integrates all the building blocks necessary to implement a fixed-frequency HB LED driver with wide-range dimming control.
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