LM2937: The maximum allowable power dissipation

Shotaro Sakai

Part Number: LM2937

Hello team,

I want to ask about a question related with the below. Can we use same formula in case of LM2937IMP? LM2937IMP has lower maximum value(=85C). I understood the all devices use same die.

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1081569/lm2937-junction-temperature

Best regards,

Shotaro

over 2 years ago

0 Srikanth Lolla Venkata over 2 years ago

TI__Genius 12070 points

Hello Shotaro,

For the LM2937IMP device the maximum allowable power dissipation at any ambient temperature would change to P_MAX = (85ºC - T_A)/ R_θJA. This would ensure that the relevant Electrical specs would hold. Thanks!

Regards,

Srikanth

0 Shotaro Sakai over 2 years ago in reply to Srikanth Lolla Venkata

TI__Intellectual 2750 points

Hello Srikanth,

Thank you for the comment. I understood we should use 85C for the LM2937IMP.

Is Absolute Maximum Ratings (=150C) same at all package version?

Best regards,

Shotaro

0 Srikanth Lolla Venkata over 2 years ago in reply to Shotaro Sakai

TI__Genius 12070 points

Hello Shotaro,

Yes, the Absolute Maximum Junction Temperature rating is the same across packages. Thanks!

Regards,

Srikanth

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LM2937: The maximum allowable power dissipation