I would like to know LTC4313IDD2#PBF's thermal resistance between junction and case, that is theta-JC.
Theta-JA is on the pin configuration section in the datasheet but theta-JC is not.
Please advise.
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LTC4313
Production
The LTC4313 is a hot swappable 2-wire bus buffer that provides bidirectional buffering while maintaining a low offset voltage and high noise margin up...
Datasheet
LTC4313 on Analog.com
I would like to know LTC4313IDD2#PBF's thermal resistance between junction and case, that is theta-JC.
Theta-JA is on the pin configuration section in the datasheet but theta-JC is not.
Please advise.
Hello Satoru,
Because this part doesn't include any large FETs or other devices which will be dissipating meaningful amounts of power there will be effectively no self-heating and the junction temperature will be pretty much equal to the ambient temperature independent of using Theta-JA or Theta-JC.
That being said, for a generic DD package, Theta-JA = 43 deg C/W and Theta-JC = 5.5 deg C/W. Note that the generic package Theta-JA is slightly different from the value in the datasheet. I've shared it for reference since it was calculated for the same generic package model used for the Theta-JC.
Eric