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TPS7B7702-Q1: Question of Fault Table

Koji Hayashi
Intellectual 955 points
Part Number: TPS7B7702-Q1

Hi all,

Questions about Table 1. Fault Table of the DataSheet.

Please tell me the Fault table of 2ch LDO.

When one LDO becomes Short-circuit or current limit,is ERRB low?

Or is ERRB low when both LDO becomes Short-circuit or current limit?

Also, when LDOSWITCH OUTPUT is Disabled, is the output voltage going down even when EN = HIGH?

Similarly, what is the EERB output of "thermal shutdown", "battery short circuit output", "reverse current" and "LDO switch output"?

Regards,

Koji Hayashi

  • 0
    TI__Mastermind 23361 points

    Hi Koji-sann, 

    /ERR will go low when one or both outputs hit current limit or short-circuit. Output voltage will go down even with EN=HIGH as soon as LDO switch output has been disabled by a fault condition such as thermal shutdown. For the /EER status, you can use datasheet TABLE 1 for reference. /EER will go low when you have thermal shutdown, output short to battery or reverse current on one or both outputs of the LDO. 

    Regards, 
    Jason

  • 0 in reply to Jason Song
    Intellectual 955 points

    Hi Jason
     
    Thank you for your quick response.

     I understand.
     
    Regards,
    Koji Hayashi