Lucast85
Member level 3
Dear all,
I'm trying to use a 3.0V zener diode (mmsz4683t1g) as a cheap "psu" for my microcontroller that could sink up to 2.3 uA of current @ 3.3V.
The board have to work over a temeprature range of -20 + 105°C.
I know that the zener voltage depends from the diode current and from the temperature through the temperature coefficient. I read the datasheet and I expect a temperature coefficient of -2mV/K but this is not the result from the LTSpice simulation I performed @ Izt.
This is the result:
from which seems that the TC is -7.37mV/K. What's wrong?
Thanks to all!
I'm trying to use a 3.0V zener diode (mmsz4683t1g) as a cheap "psu" for my microcontroller that could sink up to 2.3 uA of current @ 3.3V.
The board have to work over a temeprature range of -20 + 105°C.
I know that the zener voltage depends from the diode current and from the temperature through the temperature coefficient. I read the datasheet and I expect a temperature coefficient of -2mV/K but this is not the result from the LTSpice simulation I performed @ Izt.
This is the result:
from which seems that the TC is -7.37mV/K. What's wrong?
Thanks to all!