LM137: Junction-to-board thermal resistance

Ken Flanagan

Part Number: LM137

Hi,

I'm trying to find the junction-to-board thermal resistance for the LM137 voltage regulator. In table 6.4 of it's datasheet (here), there is no data for this row. Could someone help me find an appropriate value? Thank you very much!

Best,

Ken

over 1 year ago

0 Juliette over 1 year ago

TI__Mastermind 18466 points

Hey Ken,

I can submit a thermal modelling request and update the datasheet when the request has been fulfilled. Please allow 3-4 weeks to update the datasheet or 2 weeks to receive thermal simulation values back

0 Ken Flanagan over 1 year ago

Prodigy 10 points

Hi Juliette,

Thank you very much! Please let me know when you get the simulation values.

0 Juliette over 1 year ago in reply to Ken Flanagan

TI__Mastermind 18466 points

Hey Ken,

I just checked the thermal portal, and they are not, yet, available. I will follow up.

Juliette

0 Stephen Ziel over 1 year ago in reply to Juliette

TI__Mastermind 37065 points

Hi Ken,

Here are the results of the analysis:

Result- Theta JA-High K (standard datasheet value)   60.2
Result-Theta JC, top (standard datasheet value)   21.1
Result-Theta JB (standard datasheet value)   66.4
Result- Psi JT (standard datasheet value)   18.6
Result- Psi JB (standard datasheet value)   50.5
Result-Theta JC, bottom (standard datasheet value)   9.0

Thanks,

Stephen

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LM137: Junction-to-board thermal resistance