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  • TI Thinks Resolved

LM4040-N-Q1: AEC Qualified?

Intellectual 1580 points

Replies: 3

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Part Number: LM4040-N-Q1

Hello - My understanding of the datasheet for the LM4040 is that the AEC qualified parts are LM4040Q+suffix.  This seems to line up with the TI website which claims that the LM4040 is auto qualified for 2.5V and 3V parts.  Can I assume all Q+suffix LM4040 devices are AEC qualified?  Thank you.

  • Hi Dan,

    Your understanding of the nomenclature is correct. Devices marked LM4040Q are automotive qualified parts. These are parts we carried over from National and are thus marked -N/-Q1 and follow different naming for parts. That being said, while most of our devices are AEC-Q100 Grade 1 qualified (-40 to 125 C), some of these LM4040Q devices are Grade 3 (-40 to 85 C). If the device has a I in the nomenclature after the Q and the grade, eg. LM4040QAIM3-2.5/NOPB, it is Grade 3. If your customer needs Grade 1, make sure there is an E in that sport.

    Thanks!
    Abhinav Sharma.


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  • In reply to Abhinav.Sharma:

    Thank you for the information.  I have been unable to find AEC qualified LM4040 parts on your website for SOT23 package type in 5V output.  Do part numbers exist for this or should I move to LM4050/TL4050 depending on my design requirements?

  • In reply to Dan Ringger:

    Hi Dan,

    You're correct, we do not have AEC qualified LM4040 devices for 5V output. You should look into the LM4050/TL4050 as you mentioned for these specific types of devices, or look at our Shunt Voltage References for more options.

    Thanks,
    Abhinav.


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