The L298N is the ST Company production of a high-voltage, high-current motor driver chips. The chip uses a 15-pin package. The main features are: high operating voltage, the maximum operating voltage of up to 46V; Output current instantaneous peak current up to 3A continuous operating current of 2A; rated power of 25W. Contains two H-bridge high voltage and high current full-bridge driver can be used to drive a DC motor and stepper motor, relay coil inductive load; using standard logic level signal control; having two enable control end allow or prohibit the work has a logic device power supply input terminal, in the case regardless of the input signal affect the internal logic circuit portion to operate at a low voltage; can be an external sense resistor, the amount of change in feedback to the control circuit. The L298N chip drive motor, the chip can drive two-phase stepper motors or four-phase stepper motor can drive two DC motors.