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LM2904: Vcc Absolute Maximum Ratings

Part Number: LM2904

Hi all,

The absolute maximum rating of VCC is stated as ± 13 or 26 V in the data sheet.

My customer want to use Vcc=3.3V,GND=-15V.

If there is a problem please tell me why there is a problem.

Vcc-GND=3.3-(-15)=18 < 26.

Best Regards
Koji Hayashi

  • Hello Koji,

    There shouldn't be a problem with your customer's implementation of the LM2904 at Vcc = 3.3V, GND = -15V since it is within the supply range. One thing to keep in mind, however, is the Common-mode input voltage range and output voltage swing limitations. In this case they both seem to be 1.5V from Vcc.

    Regards,

    Ramon Jimenez

  • In reply to Ramon Jimenez:

    Hi Ramon,
    Thank you for your quick response.

    I thought ± 13 V was up to Vcc = 13 V and GND = -13 V.
    What is the lower limit?
    Is the lower limit value Vcc = 0 V, GND = -26 V?

    Best Regards
    Koji Hayashi
  • In reply to Koji Hayashi:

    Hello Koji,

    Vcc = 0V, GND = -26V would be fine as well since you are still within your maximum supply voltage range (Vcc - GND = 26V). This would be the lowest limit before concerns begin to occur. 

    Regards,

    Ramon Jimenez

  • In reply to Ramon Jimenez:

    Hi Ramon,

    Thank you for your quick response.
    I was understood.

    Best Regards
    Koji Hayashi

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