LTC2000 Operating Temperature vs Junction temperature


I assume that the LTC2000's datasheet parameter "Operating Temperature Range" is the ambient temperature. The LTC2000C has an upper limit for this at 70 °C.

The actual temperature inside the chip depends on the ambient temperature, but also on the PCB's thermal properties and on the air flow. A heat sink will of course also affect the relationship between the junction temperature and the ambient temperature.

I assume that the relevant temperature is the junction temperature (and not the ambient), so what is the corresponding junction temperature for the LTC2000 when used at 70 °C "Operating Temperature"?

Regards, Jonas

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