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LP3853: About the SD of LP3853ESX-2.5

user272328
Prodigy 170 points
Part Number: LP3853
Other Parts Discussed in Thread: LP3856,

Hello,

The current product uses TPS75825KTT, but since it is difficult to obtain, I'm thinking of replacing it with LP3853ESX-2.5.

I am using EN of TPS75825KTT, but 5pin is not connected.

5pin of LP3853ESX-2.5 is an error output. Is it possible to use this pin without connecting it?

thank you.

  • 0
    TI__Expert 5231 points

    Hello,

    In the data sheet on page 14 it states that if the sense option pin is not required, the sense pin must be connected to the VOUT pin. There is also a diagram that would help to look at. Please let me know if you have any further questions. 

    Thank you,

    Josh Nachassi

  • 0
    Prodigy 170 points

    Hello,

    Thank you for your reply.

    I think SENSE PIN is the case of LP3856, but the one I'm considering this time is LP3853.

    LP3853ESX-2.5 is an Error output pin.

    However, in the data sheet, there was a description that could be used by pull -up or pull -down for some reason, and I wanted to know if it would be a problem in the open.

    Thank you.

  • 0 in reply to user272328
    TI__Expert 5231 points

    Hello,

    It specifically states that this pin must be connected to GND if not being used so I would not advise to leave it open. I would connect it to GND. You can find this at the bottom of page 13 under error flag operation.

    Hope this helps answer your question.

    Thank you,

    Josh