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LM5155: UVLO resistor divider 原理

Part Number: LM5155

LM5155 2.2MHz 宽输入非同步升压、SEPIC、反激式控制器 datasheet (ti.com.cn)

data sheet中公式1和2计算 UVLO 的分压电阻计算原理不理解,麻烦能说的更详细些吗?

  • Hi
        其实欠压保护主要难以理解的是电压迟滞和5uA的电流(UVLO hysteresis is accomplished with an internal 50-mV voltage hysteresis and an additional 5-μA current source that is switched on or off.)

        具体你可以多看看datasheet 12页9.3.1,以及datasheet 第14页。