L297, L298 stepper motor control circuit

The L297 single-chip stepper motor controller integrated circuit is suitable for the control of bipolar two-phase
stepper motors or unipolar four-phase stepper motors. The L297 output signal can be used
to control the L298 dual H-bridge driver integrated circuit
, which is used to drive stepper motors with a voltage of 46V and a current of less than 2.5A per phase . The L297 can also be used to control discrete circuits composed of Darlington transistors
to drive higher voltage and larger current stepper motors. L297
works in PWM constant current chopping mode with fixed chopping frequency.
    1. L297 Stepper Motor Controller L297 adopts analog/digital circuit compatible
I2L technology, 20-pin DIP plastic package, usually LJ+5V power supply, and all signal lines are
TTL/CMOS compatible.