• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 32 subscribers
  • Views 406 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.

ULN2003A: Absolute Maximum Rating of TA

K. Sasaki14
Guru 10200 points
Part Number: ULN2003A

ULN2003A absolute maximum rating of TA is -20 degC to 70 degC. And Recommended Operating condition Tj is -40 degC to 125 degC.

Should we use ULN2003A within TA -20 degC to 70 degC even if device power consumption is low and Tj is not over 125 degC?

Using condition is the following,
1ch to 4ch: 7mA at each ch
6ch: 120mA
5ch, 7ch: not used

Best Regards,
Kohei Sasaki

  • 0
    TI__Mastermind 24485 points
    Hello Sasaki-san,

    You need to ensure that the ambient temperature for the device is within the range specified.
    The device junction itself is allowed to heat beyond the ambient temperature based on power consumption.
    If the ambient temperature is 70C, the device should be fine to consume power as long as the junction doesn't heat beyond 125C.

    With the setup that you described, you should have no concerns with the device.
    If you would like to have a higher ambient temperature allowed, then you could consider the ULN2003AI device which has an ambient temperature range of -40C to 105C.

    I hope this helps. Let me know if you have additional questions.

    Best,
    Michael