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TPS482H85-Q1: Can I add pull up resistor in the latch pin of TPS482H85C-Q1?

Nihal Kumar
Prodigy 80 points
Part Number: TPS482H85-Q1

Tool/software:

Hi Members,

I'm drawing the schematics of TPS482H85-Q1, Got a confusion over LATCH pin whether pull resistor is required or not? Could anyone suggest me in this?

  • 0
    TI__Expert 8121 points

    Hi Nihal,

    The LATCH pin allows the user to configure the device behavior when a thermal fault occurs. If the LATCH pin is pulled low, it will operate in auto-retry mode. If it is pulled high, the device will latch off. 

    Please see below for more information.

    Best Regards,

    Rishika Patel 

  • 0 in reply to Rishika Patel
    Prodigy 80 points

    According to thermal behaviour, Pull up is going to use for Latch Pin. Is it possible to operate without Pull up for Latch Pin?

  • +1 in reply to Nihal Kumar
    TI__Expert 8121 points

    Hi Nihal,

    You can operate in either mode - it just depends on the customer/requirement. The LATCH pin has an internal pulldown so it will automatically operate in the auto-retry mode but if you want to operate it in latch-off, you will need to pull it high. So yes, you can operate without a pull up which means the device will operate in the auto-retry mode and try to restart after some time when thermal shutdown is reached. 

    Best Regards,

    Rishika Patel