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TS5A3166: The behaviour of TS5A3166 during power-on

Parker Lin
Prodigy 55 points
Part Number: TS5A3166

Will COM be shorted to GND when V+ is still unstable during power-on?

Will COM connect with NO when V+ is still unstable during power-on?

What state is COM when V+ is still unstable during power-on?

  • 0
    TI__Intellectual 2900 points
    Hi Parker,

    Would you let us know what your IN pin is during power up? Is it high or low or ramping with VCC?


    Fan Wang
  • 0 in reply to Fan.Wang
    Prodigy 55 points
    Hi Fan,

    When VCC is lower than 1.1V, IN is ramping with VCC. However, I believe TS5A3166 does not work at this period.
    Most of chances, IN should be low when VCC is higher than 1.1V during power up.
    Could you let me know the both result of IN is high or low during power up?

    Thanks!
    Parker
  • 0 in reply to Parker Lin
    TI__Intellectual 2900 points

    Hi Parker,

    During supply is ramping,

    1. IN is always low case
    In most cases, COM is always floating or COM is floating most of the time. For some chips, COM is shorted to GND or shorted to NO for very short period of time. COM becomes floating after VCC is ready.

    2. IN is always high case
    IN always high is more complicated. At the very beginning of VCC ramp, COM might be floating or shorted to GND, or NO or GND for very short period of time. Then, COM is shorted to NO as it is supposed to be.

    Would you share us a bit more about your application so that we better assist you? 


    Best Regards
    Fan Wang