Hi,
The LM96194 device has a nominal supply voltage of 3.3V. Can this device be used for monitoring 12V supply if the 12V supply is present on the board before the 3.3V supply is generated?
Regards,
Prachi
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Hi,
The LM96194 device has a nominal supply voltage of 3.3V. Can this device be used for monitoring 12V supply if the 12V supply is present on the board before the 3.3V supply is generated?
Regards,
Prachi
Hi,
Could you please update me on the above query?
Regards,
Prachi
Hi Prachi,
Sorry I missed your thread. I will get back to you soon.
Aaron
Hi Prachi,
Sorry for the long delay. I don’t think the device will able to work regardless power ON or OFF after 12V is present since these pins are not rated beyond abs max. I also need to know, which input pin you are using because some of the input pin doesn’t have the voltage divider internally.
I would suggest that you might need to divide it down to the LM96194’s power supply range. If you can provide me more detail about your application, I would happy to assist you looking into another part.
Aaron
Hi Aaron,
I have a similar doubt as the earlier one. I am using the AD_IN7 input to sense 5V supply. I am using external dividers so that the value at that pin is 0.984V.
However, the 5V is generated before the 3.3V VCC of the device. Is this fine? The absolute maximum rating for this pin is −0.3V to +6.0V.
Regards,
Prachi
Hi Prachi,
I'm sorry for the long delay. I was a bit busy getting stuffs done. It should no problem when you apply 5V before powering the chip as long as you do not exceed 6V. There are two resistors internally dividing down to meet the device operating voltage range.
Please let me know if you have additional question.
Aaron