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TPS25925: Current limit lower than 2A

Jim Tsai
Expert 4470 points
Part Number: TPS25925

Hi,

According to datasheet, current limit is 2A~5A.

Base on equation, if I use Rlim=24.9kohm get 1.45A current limit.

My question is can I set current limit 1.45A of the e-fuse?

  • 0
    TI__Guru 63995 points

    Hi Jim,

    The accuracy of current limit varies with process, voltage and temperature. The value of current limit from 2A-5A will have a tolerance of 15% and are quite accurate and recommended . 

    You can choose RILIM 24.9kohm to get current limit of 1.45A but it will have a tolerance of around 20-30% which may not be acceptable for your system.

    Please refer this graph for more understanding:

      

    Regards

    Kunal Goel