L297 Stepper Motor Controller IC (DIP 20, Half Step and Full Step)

The L297 is a stepper motor controller IC from STMicroelectronics designed to generate phase control signals for bipolar and unipolar stepper motors. It supports half step, full step, and wave drive operation, with an integrated chopper circuit for controlling motor winding current. It is commonly paired with an external motor driver such as the L298N to build microcontroller controlled motion systems.

Key Features -

• Four phase control signal outputs

• Supports bipolar and unipolar stepper motors

• Half step, full step, and wave drive modes

• Clockwise and counterclockwise direction control

• Integrated chopper based winding current regulation

• Programmable current control through a reference voltage

• Clock input for step advancement

• Reset input and home position output

• Compatible with external motor driver stages

Specifications -

• Part Number: L297

• Manufacturer: STMicroelectronics

• Component Type: Stepper Motor Controller

• Motor Types: Bipolar and unipolar stepper motors

• Control Modes: Half step, full step, and wave drive

• Supply Voltage: 4.75V to 7V

• Output Signals: A, B, C, D, INH1, and INH2

• Current Regulation: Integrated chopper control

• Package: 20 Pin DIP

Applications -

• CNC machines and positioning systems

• Robotics and automation equipment

• 3D printer motion control

• Microcontroller based stepper motor systems

• Industrial positioning equipment

• Programmable motion control circuits