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EGeor.1
Associate II
November 12, 2020
Solved

Hi ST Micro, Please share the thermal data of LIS2DE12TR . 1.Operating Temp 2.Storage Temp 3.Case Temp 4.Junction Temp 5.Junct-amb thermal resistance(RθJA) 6.Junct-case (top&bot) thermal resistance (RθJ 7.Junct-brd thermal resistance(RθJB) Thanks

  • November 12, 2020
  • 1 reply
  • 1903 views

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Best answer by Eleon BORLINI

Hi @EGeor.1​ ,

Well, some of these parameters are not declared in the datasheet, so I can only give an idea of typical values. For the 1.Operating temperature and 2.Storage temperature, you can refer to the datasheet, p. 14, "Absolute maximum ratings" table, last lines.

0693W000005BA5wQAG.png 

About the topics regarding the junction (point 4. to 7.), the LIS2DE12TR max supply is 3.6V and max current (normal mode, max ODR) is about 200uA, so the power consumed in the worst case is P=V*I=0.72mW. If you consider that the package thermal resistance is 80°C/W, the thermal difference between the device and the environment is DeltaT < 0.1°C.

Moreover, no worry about the junction temperature with respect to storage temperature.

-Eleon

1 reply

Eleon BORLINI
Eleon BORLINIBest answer
ST Employee
November 12, 2020

Hi @EGeor.1​ ,

Well, some of these parameters are not declared in the datasheet, so I can only give an idea of typical values. For the 1.Operating temperature and 2.Storage temperature, you can refer to the datasheet, p. 14, "Absolute maximum ratings" table, last lines.

0693W000005BA5wQAG.png 

About the topics regarding the junction (point 4. to 7.), the LIS2DE12TR max supply is 3.6V and max current (normal mode, max ODR) is about 200uA, so the power consumed in the worst case is P=V*I=0.72mW. If you consider that the package thermal resistance is 80°C/W, the thermal difference between the device and the environment is DeltaT < 0.1°C.

Moreover, no worry about the junction temperature with respect to storage temperature.

-Eleon

EGeor.1
EGeor.1Author
Associate II
November 12, 2020
Hello Eleon,
Thanks for the quick response.
It would be great if you can share the correct data if it is available.
Eleon BORLINI
ST Employee
November 12, 2020

Hi @EGeor.1​ ,

Which is the target application for which these data are mandatory? You can as starting point consider the overall thermal junction resistance as the previously declared 80°C/W.

-Eleon