TPS92641的欠压保护UDIM引脚电压是多少?
时间:10-02
整理:3721RD
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我输入电压为24V,Vturn-on 电压为20V。
This pin functions as both the PWM dimming input of the LEDs and as
an input UVLO with built-in hysteresis. When the pin voltage rises and exceeds the 1.276-V threshold, 21 μA
(typical) of current is driven out of the UDIM pin into the resistor divider (RUDIM1, RUDIM2) providing programmable
hysteresis
这意思是说当我UDIM电压低于1.276V IC进入保护模式还是其他意思?
UDIM 电压低于1.276V时, IC就锁死了不工作了。
但我Vin设置低于20V IC就不工作了,但实际却还是有输出
能看下你的原理图么?实际输出具体是多少的?