R1 question for LM2576 buck

Discussion in 'General Electronics Chat' started by Chillum, Jan 16, 2015.

  1. Chillum

    Thread Starter Active Member

    Nov 13, 2014
    Hi, I want to build a 36V LM2576 buck, I selected my resistor R1 at 750R, because I can get R2 VAR 22K (and already bought the pots), but now I see datasheet says R1 minimum 1K, what will happen if I use a 750R?

    Moderators note: removed brackets, as they lead to an error page
    Last edited by a moderator: Jan 16, 2015