Hi Team,
My customer has a question of TLV70430DBVR for its output voltage temperature coefficient spec.
In the spec, which is not highlighted the temperature coefficient, it only provide the curve of output voltage vs junction temp as the attached.
But, I want to know the quantified data similar to our REF35 spec which is described.
THanks!
BR,
Alfred
Hi Alfred,
Thank you for reaching out.
The REF35 is a voltage reference vs TLV70430DBVR being an LDO.
Although they share some similarities, they are different devices.
The overall accuracy of the LDO considers the effects of Load regulation, drift of the reference, drift of the error amplifier, and temperature coefficient.
Therefore, although we do not show temp coefficient, we show Line Regulation, Load Regulation and dVout vs Temp:
To simplify things, lets use the Load regulation for the ppm/C calculation for a worst case scenario.
I used Vmax as 3.3V and Vmin as 3V then this gives ~443.46 ppm/C.
However, keep in mind that this is just based on the Load regulation.
We can clearly see that overall the accuracy is very tight over temperature and we have to consider all the other factors mentioned which is why it is recommended to look at the plots rather than the ppm/C.
Best,
Edgar Acosta
