Hi, I have been simulating the TL431 as comparator. I have given green color waveform as input to ref pin. I could see the TL431 responding(blue color waveform) after > 100uS when ref pin voltage goes < 2.5V. Will TL431 takes this long to respond as i couldn't find the same in data sheet?
Hi,
I have query on TL431A. What is the forward voltage drop of the diode as marked below? we need this for some circuit analysis.
Sandeep
That is protection diode , that can withstand with 100mA current for a very short duration . However it is not recommended to design your circuit which regularly triggers this diode. It may lead to spec degradation. The voltage will be roughly around 0.6V but it can vary a lot with temperature , current and device to device as we don't design it to give stable output. That's why there is no spec given in the data sheet for the voltage.
You can refer
Regards
Trailokya
