• State
  • Locked Locked
  • Replies 2 replies
  • Subscribers 102 subscribers
  • Views 217 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Original question:

DRA821U: ambient temperature

DRA821U: DRA821U

user6537612
Prodigy 200 points
Part Number: DRA821U
Other Parts Discussed in Thread: DRA821

What is the operating temperature range of the DRA 821?

Only the junction temperature specifications are listed on the data sheet.

I would like to know the ambient temperature specifications ,which the DRA821 can be opereated normally.

  • 0
    TI__Guru*** 130520 points

    Hi,

    I am checking with our expert. I will get back to you as soon as i hear back from him.

    Best Regards,
    Keerthy

  • 0
    TI__Genius 14800 points

    The junction temperature is the critical parameter.

    Since the storage temperature shows a range of -55C to 150C, it is necessary that the device is NOT harmed at those temperatures. However, the operating range is -40C to 125C (for automotive class devices). This means that the die must operate within this range. If the temperature were colder than -40C and the system was sometimes turned OFF, there would be times operating outside of the limits. Similarly, the junction is almost always hotter than the ambient. In a high power operation, the system must transfer heat from the device to the ambient in order to maintain its 125C junction limit. It is therefore typical that the ambient is not nearly as hot as 125C.

    There is no ambient specification beyond the storage temperature cited earlier and the limits imposed by the junction temperature.

    Kevin