NS LM3463四路高压LED驱动解决方案
NS 公司的LM3463是四路高压LED驱动器，LM3464输入电压为12V-80V，LM3464A输入电压为12V-95V，四路输出可单独电流稳压，通路间的精度高，数字PWM/模拟调光控制接口，动态静空控制最大化效率，主要用于街灯照明和固态照明解决方案。本文介绍了LM3464/64A 主要特性，方框图，典型应用电路图，LM3464 4路LED驱动器评估板主要特性，电路图，材料清单和PCB元件布局图。
LED Driver with Dynamic Headroom Control and Thermal Control Interfaces
The LM3464/64A is a 4-channel high voltage current regulator that provides a simple solution for LED lighting applications. The LM3464/64A provides four individual current
regulator channels and works in conjunction with external Nchannel MOSFETs and sense resistors to give accurate driving current for every LED string. Additionally, the Dynamic Headroom Control (DHC) output can be interfaced to the external power supply to adjust the LED supply voltage to the lowest level that is adequate to maintain all the string currents in regulation, yielding the optimal overall efficiency.
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