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TPS7A4501-SP: TPS7A4501-S Off to ON min SHDN voltage

Anthony Giordano
Prodigy 50 points
Part Number: TPS7A4501-SP

When we first power our design, prior to enabling this regulator, we want to make sure that the regulator will not turn on. The datasheet lists .9V as the typical off to on voltage. There will be about .35mV present, so we want to know how much margin we have. What is the minimum Off to On voltage?

  • 0
    TI__Genius 10970 points

    Hi Anthony,

    Unfortunately I do not have an exact value as this minimum is not included as a spec in the datasheet. With that said, I would not anticipate problems from 0.35mV on the SHDN pin as even the minimum ON-->OFF threshold is larger (150mV). Lower than SHDN=150mV, the device is known to be disabled. 

    Thanks,

    Sarah

  • 0
    Prodigy 50 points

    Hi Sarah, 

    I meant to say .35V or 350mV but I guess the answer still stands?

    Thanks, 

    Anthony

  • 0 in reply to Anthony Giordano
    TI__Genius 10970 points

    Hi Anthony,

    Yes, there still isn't an exact value I could definitively provide.

    It's likely that 350mV would be low enough to avoid enabling the device as this is in the minimum to typical range of the Disabling voltage threshold spec, but since the minimum Enabling voltage is not something that has been fully characterized and qualified it isn't something that could be guaranteed. 

    Thanks,

    Sarah