LM3481的datasheet上 boost参考电路是通过FB引脚上的电阻RF1和RF2来设置输出电压,有没有电路可以通过外部电压给定控制输出电压,实现输出电压可调。如果LM3481没有这种功能,请帮忙推荐一款通过外部电压控制输出电压的boost控制芯片。
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