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LM2596: SD/SS-pin

ACGUY
Guru 11170 points
Part Number: LM2596
Other Parts Discussed in Thread: LM2597, LM2595

Hello E2E,

There is written SD/SS in the absolute max ratings table. Is it mean for same with ON/OFF-pin?

Regards,
ACGUY

  • 0
    TI__Mastermind 27045 points

    Hi Acguy,

    On data sheet revised Apr 2013, it shows ON/OFF pin Abs Max rating, no content about SD/SS.

    B R

    Andy

  • 0 in reply to Andy Chen
    Guru 11170 points

    Hi Andy,

    What is the SD/SS pin? Does LM2596 have shut down and soft start functions?

    Regards,

    ACGUY

  • 0 in reply to ACGUY
    TI__Guru 57555 points

    The LM2596 has only an "on/off" or "shutdown" control for controlling the device.

    Other devices in the family, such as the LM2597, have more features; such as a combined shutdown and soft-start pin called SD/SS.

    The LM2596 and LM2595 have a simple on/off and no external soft start.  The rating for the LM2596 and LM2595 on/off pin is -0.3V to 

    25V.  For the LM2597 SD/SS pin it is 6V.  There seems to be different version of the LM2596 data sheet that is causing the confusion.