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TPS2373-4EVM-758: REference resistor value.

Andrew Frazer
Expert 2305 points
Part Number: TPS2373-4EVM-758
hello, i'm evaluating this device right now,  and i'm wondering why the refernece resistor is specified as 49k9?   From the datasheet  it shows that the resistor will be tied to the - input of the op-amp,   and the + side is 
tied to an internal 1.5V.       

If i was to use somethign approximately the same ( say 51k ) what woudl be the impact.

 ) 
  • 0
    TI__Mastermind 41770 points
    Hi Andrew,

    The voltage reference needs some small load to maintain proper regulation so the a 48.9k-50.9k is recommended as described on section 6.3. Operating outside the recommended operating condition of the datasheet may not yield proper functionality of the PD controller.

    Regards,
    Darwin