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TPS22953: sequence requirment

tateo yamashiro
Guru 10890 points
Part Number: TPS22953

Hi,

We got a question from customer about TPS22953.
Could you help us?

[Question]
- Is there any start-up and shutdown sequence requirement between IN, BIAS and EN?
- When BIAS and EN are Low, will the reverse current protection be active?

Best Regards,
tateo

  • 0
    TI__Genius 15770 points

    Hi Tateo,

    There are no startup and shutdown sequencing requirements for the TPS22953. However, if VBIAS and EN are high before VIN, then the output rise time may not be controlled.

    When VBIAS and EN are low, the TPS22953 is still capable of blocking reverse current by powering itself from OUT. What voltage do you expect to be on OUT during a reverse current event?

    Thanks,

    Alek Kaknevicius