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What is total power dissipation (PT)?

Latest Updated:12/01/2011

Question:

What is total power dissipation (PT)?

Answer:

This is the maximum power that can be consumed by the IC at room temperature (TA=25°C) with normal operation guaranteed. The total power dissipation is determined by maximum value of the chip's junction temperature (which is usually the same as the upper limit of the storage temperature (Tstg)) and the thermal resistance of the package.
If the ambient operating temperature is high, the total power dissipation will be lower, so refer to the PT - TA characteristics (derating curves) before commencing design.
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