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LM2902: Any power up/down sequence to be followed?

Kazuhiko Hirano
Genius 12838 points
Part Number: LM2902

Hello,

My customer would like to use LM2902 at Vcc+ = +5V and Vcc- = -7V.
In this case, any power up/down sequences between Vcc+ and Vcc- to be followed?

Or are they power up/down in any orders?

Best regards,

K.Hirano

  • 0
    TI__Guru*** 145996 points

    Hello Hirano-san,

    The order will affect the power up/down output voltage. This will be the time that total Vcc is below minimum VCC or the time where input common mode range is invalid.

    Do not short any input to ground (add some current limiting resistance), otherwise input current might flow during power up or down. [VCC- may be becoming a little positive]

    The short answer is that any sequence will work.