3771 vs 3771D2 driver chip

Discussion in 'General Electronics Chat' started by Iggylites, Nov 26, 2009.

  1. Iggylites

    Thread Starter New Member

    Sep 13, 2009
    Hello All:

    I was wondering can replace a 3771 driver with a newer 3771D2 driver in an existing stepper motor circuit? I'm not 100% sure what the double layer means in terms of performance for one of these.

  2. mik3

    Senior Member

    Feb 4, 2008
    If the input/output voltages /currents are compatible the you can replace it. Also, check if the pins have the same functionality. It suggests double layer PCB as to minimize stray inductance and thus reduce noise and EMI. However, it can work with out a double layer PCB.