【应用】国产高频升压转换器SGM6601YTN5G/TR用于手持式激光测距仪，输出电压高达38V

时间： 2021-12-08 来源：世强

技术问答

手持式激光测距仪是新型的测距工具，可代替传统卷尺，操作简单，携带方便，它的主要功能有：直线测距、面积和体积测量、勾股定理测量等，是户外测距的优良选择。手持式激光测距仪主要结构包括有MCU，发射及放大电路，计时IC，陀螺IC，电源管理，以及显示LCD这几块，简要框图如下：

针对手持式激光测距仪中的LCD驱动的设计是需要一款电压升到22V，电流在毫安级的DC-DC升压芯片，推荐圣邦微（SGMICRO）的SGM6601YTN5G/TR，这是一款专用于中小型液晶偏压电源和白色LED背光电源的高频升压转换器，输入电压在1.8V-6V，输出电压可调节高达38V，输出电流400mA，完美符合手持式激光测距仪中的LCD驱动的设计。如下是SGM6601YTN5G/TR的主要规格参数表：

SGM6601YTN5G/TR运用于手持式激光测距仪中的LCD驱动的设计所具备的优势如下：

1、输入电压为1.8V到6V，输出电压最高达38V，输出电流在400mA，满足手持式激光测距仪中的LCD驱动的设计要求；

2、开关频率高达1MHz，可以使外部搭配小尺寸的电容器，节省空间；

3、低典型静态电流20μA，适用于有节能需求的手持式激光测距仪；

4、运用TSOT-23-5封装，方便生产时的工艺安装。

如下，为SGM6601YTN5G/TR的引脚和应用电路示意图：

综上，圣邦微升压转换器SGM6601YTN5G/TR输出电压高达38V，电流在毫安级，高开关频率，低静态电流值，是手持式激光测距仪中的LCD驱动设计的优良选择。

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