heat sink for LMZ34002

Timothy Starr

Other Parts Discussed in Thread: LMZ34002

Hello-

Is there a recommended heat sink for the LMZ34002? Ours isgetting pretty hot with 2.7W dissipated in a 50 degree C environment with no forced air. Thanks and Best Regards,

-Tim Starr on behalf of KK@AM

over 8 years ago

0 LeonardEllis over 8 years ago

TI__Guru 71526 points

Hi Tim,

This App Note gives some suggestions and design considerations: www.ti.com/lit/an/snva419c/snva419c.pdf . With a reference to a heat sink by Novel Concepts on page 11.

~Leonard

0 Timothy Starr over 8 years ago in reply to LeonardEllis

Expert 2445 points

Hi Leonard- That is actually a reference to a heat sink resistance calculator, not a heat sink part number. What we need is an actual heat sink which is just under 9x11mm, height is not really an issue. Please consider this question unanswered. Thanks,
-Tim

0 J Arrigo over 8 years ago

TI__Mastermind 28020 points

I do not have a recommendation for a heatsink for this device. However, this device can operate safely under the thermal limits at 50°C. What are your operating conditions for this application?

0 Timothy Starr over 8 years ago in reply to J Arrigo

Expert 2445 points

55 degrees ambient. Do you still have no recommendation?

There is no height restriction for the heat sink in question.

0 J Arrigo over 8 years ago in reply to Timothy Starr

TI__Mastermind 28020 points

Yes, still no recommendation for a heat sink. However, this device can operate safely under the thermal limits at 55°C.
What are your operating conditions for this application? What input voltage, output voltage and output current.
If needed, contact me directly at 630-836-2873.
Thanks, Jason

Power management

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heat sink for LMZ34002