Interface and Isolation

Q&A thermal package of ADM3053

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thermal package of ADM3053

HappyHippo on Feb 10, 2016

Hey,

I'm not able to find the thermal resistance (JC,JB) of the CAN ADM3053. Can anyone help me?

And can you tell me how I could find it in future cases?

In the datasheet of the ADM3053 you can only find theta JA.

Thank you!!

attachment.pdf

0 RAnslow

on Feb 11, 2016 10:58 AM over 5 years ago
Hi Robin,

Sorry, we only have the θJA data available.

Why do you need the θJC/θCA data ?

Best Regards,

Richard
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0 ConalW

on Feb 11, 2016 2:32 PM over 5 years ago
Hi Robin,

We only specify Theta Ja for these products (53C/W per absolute maximum ratings table).

An estimate for Theta Jb would be 35 C/W and for Theta Jc, 30 C/W.

In practice, the junction temperature during operation will be very dependent on your board layout (the numbers above are general, and assume a pretty standard 4 layer PCB). For example extra copper and/or vias at the ground pins will allow heat to be better dissipated from the part through those pins to the PCB.

Best regards,

Conal
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0 HappyHippo on Feb 11, 2016 6:17 PM over 5 years ago

Hey, thank you. I need it for thermal simulations...
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