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LM4040-N: temperature range

John11513
Expert 5360 points
Part Number: LM4040-N
Other Parts Discussed in Thread: LM4040, LM4030, TL4050A, TL4050B, TL4050C

Hi,

As datasheet of LM4040-N says, this part has two kinds of temperature range: industrial temperature range (-40 to +85) and extended temperature range (-40 to +125). While it does not say which part# corresponding to which temperature range. Could anyone tell me how the temperature range is denoted in a specific part number?

Thank you,

John

  • 0
    TI__Intellectual 1540 points

    Hi John,

    A general convention for TI, which doesn’t always apply, is that in the naming of the part there will usually be a C, I, or E. Those letters represent the temperature range of the part:

    C = 0C to 70C (Commercial)

    I = -40C to 85C (Industrial)

    E = -40C to 125C (Automotive)

    In the LM4040-N parts the parts with extended temperature range will be the ones with the following convention:

    LM4040xEM3 and LM4040QxEM3

    These parts are available in the C, D, and E performance grade

    Regards, Diego

  • 0 in reply to Diego Lewis
    TI__Expert 5360 points
    Thank you Diego for reply. I think the datasheet should explain this clearly.
    So it seems the 4.1V version of LM4040 does not have extended temperature range device? Do you have any recommendation for this requirement?

    John
  • 0 in reply to John11513
    TI__Intellectual 1540 points

    Hi John,

    Which performance grade of the LM4040-N were you interested in?

    The TL4050, LM4050Q, and the LM4030 all have options for 4.1V with extended temperature ranges. Here is chart of all the available options:

    Part # Initial Accuracy (-40C to 12C) Temperature Coefficient (ppm/C)
    TL4050A ±0.1% 50
    TL4050B ±0.2% 50
    TL4050C ±0.5% 50
    LM4050QA ±0.1% 50
    LM4050QB ±0.2% 50
    LM4050QC ±0.5% 50
    LM4030A ±0.05% 20
    LM4030B ±0.1% 20
    LM4030C ±0.15% 30

    Regards, Diego