My customer wants to know the absolute maximum Tc and theta-jc of AD8056ARZ.
Could you let us know about it?
I already contacted the product owner of this part. I'll get back to you soon.
Thank you for your support. I look forward to your answer.
Could you reply?
Now we are losing this opportunity and customer's trust.
Please help us.
Apologies if it is taking longer time but to be able to get this information, we are doing simulations which is usually take several days because the simulation itself is time consuming. I've talked to our product experts and what I can provide for you now is only estimates. He said that for the SOIC version, it is safe to say that the max Tc is about 130 'C and theta-jc is 45 'C/W as referred to this article on this link: http://www.analog.com/media/en/technical-documentation/technical-articles/MS-2251.pdf
I will still provide you the exact values as soon as I've got the needed information coming from the person in charge on the simulations.
Hoping for your kind consideration.
According to the guy responsible for the simulations, you can used 43'C/W for its theta-jc. This was the number produced on the simulations based on its leadframe pad size.
Do you know why the customer needs the theta-jc for the AD8056? It is said that we do not supply the theta-jc for packages that don't have an exposed pad because it is not relevant.
I hope this helps. Let me know if you need anything else.
Thank you for the confirmation.
The customer has temperature issue with AD8056. AD8056 seems very hot than they expected.
That's why they want to know the theta jc.
Please take note that the value of theta-jc is only useful when the package is mounted directly to a heat sink. Junction temperature is dependent on the supply voltage and the current load of the circuit. Please see on this link for a detailed explanation and computation. If the customer still thinks that the parts is not behaving normal, he can post his schematic here for us to check if he is missing something. Or you may also contact nearest FAE on your area on this link for more technical support.
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