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Part Number: TPS7A25
Normally thermal resistance JA is higher than JC. In TPS7A25, JA is 73 while JC is 90. Any specific reason for this behavior ? Also, could you please help to confirm same ?
We show two JC numbers as shown below:
RTJC(TOP) is from the die to the top of the package through the mold-compound. RTJC(BOT) is from the die to the packages power pad. Here is an illustraion of the different parameters:
This is showing how the paths for heat to escape the package relate to RTJA.
The fundamental reason for the higher number is we have a smaller die, which means a smaller surface area to spread the heat.
I hope this helps to answer your question.
John Cummings 蔣康明Texas Instruments 德洲儀器Johncummings@ti.com
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In reply to JCHK:
Thanks for clarifying
In reply to PRAHLAD Supeda:
You are welcome!
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