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If the feedback resistance from the output to the FB pin is high, there is a greater chance of the circuit being affected by crosstalk; but what about the influence of a bias input current at the FB pin?
Naturally, if the feedback resistance value is too high, the bias input current will have an effect. A bias current mainly affects voltage precision. Where crosstalk is concerned, often there are AC fluctuations, causing ripple increases and abnormal oscillation.