LMH6551: LMH6551 junction to case/PCB parameters

Carlos Silva85

Expert 4915 points

Part Number: LMH6551

Do we have metrics on junction to ambient case and junction to board parameters for the LMH6551 in a VSSOP package?

The datasheet only provides values for thermal junction to ambient

over 6 years ago

0 Jacob Freet over 6 years ago

TI__Expert 7875 points

Hi,

The juntion-to-ambient thermal resistance is listed for both packages in table 7.4 of the datasheet.

Regards,

0 Carlos Silva85 over 6 years ago in reply to Jacob Freet

TI__Expert 4915 points

Yes, junction to ambient is provided, I'm looking for junction to case and junction to board, post above corrected.

0 Jacob Freet over 6 years ago in reply to Carlos Silva85

TI__Expert 7875 points

Hi Carlos,

I just wanted to update you that I have requested additional thermal information for the package. Unfortunately that process can take up to two weeks. I will let you know as soon as I receive the information.

Regards,

0 Carlos Silva85 over 6 years ago in reply to Jacob Freet

TI__Expert 4915 points

Thank you, Ill inform my customer.

0 Jacob Freet over 6 years ago in reply to Carlos Silva85

TI__Expert 7875 points

Hi Carlos,

I just wanted to update that I am still waiting for the new thermal information and will let you know when I receive it.

Regards,

0 Carlos Silva85 over 6 years ago in reply to Jacob Freet

TI__Expert 4915 points

Jacob Freet said:
Hi Carlos,

I just wanted to update that I am still waiting for the new thermal information and will let you know when I receive it.

Regards,

Thank you for the update, Jacob.

0 Jacob Freet over 6 years ago in reply to Carlos Silva85

TI__Expert 7875 points

Hi Carlos,

Below is the thermal information for the VSSOP package.

Result- Theta JA-High K (standard datasheet value)
176.4
Result-Theta JC, top (standard datasheet value)
71.2
Result-Theta JB (standard datasheet value)
97.6
Result- Psi JT (standard datasheet value)
11.1
Result- Psi JB (standard datasheet value)
96.1

Regards,

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LMH6551: LMH6551 junction to case/PCB parameters