A3979SLPTR

Product Overview

Category

A3979SLPTR belongs to the category of integrated circuits (ICs).

Use

This IC is primarily used for motor control applications.

Characteristics

• A3979SLPTR is a high-performance stepper motor driver.
• It offers microstepping capability, allowing for smoother and more precise motor control.
• The IC operates at a wide voltage range, making it suitable for various applications.
• It has built-in protection features such as thermal shutdown and overcurrent detection.

Package

A3979SLPTR is available in a surface-mount package.

Essence

The essence of A3979SLPTR lies in its ability to provide efficient and accurate control of stepper motors.

Packaging/Quantity

The IC is typically packaged in reels or tubes, with varying quantities depending on the supplier.

Specifications

• Supply Voltage: 8V to 35V
• Output Current: Up to 3.5A
• Microstepping Resolution: Up to 1/16 step
• Operating Temperature Range: -40°C to +125°C
• Package Type: TSSOP

Detailed Pin Configuration

The A3979SLPTR IC has the following pin configuration:

1. VREF - Reference voltage input for motor current control.
2. GND - Ground connection.
3. CP1 - Clockwise pulse input.
4. CP2 - Counterclockwise pulse input.
5. EN - Enable input.
6. MS1 - Microstep resolution selection input.
7. MS2 - Microstep resolution selection input.
8. RESET - Reset input.
9. STEP - Step input.
10. DIR - Direction input.
11. OUT1 - Motor coil output 1.
12. OUT2 - Motor coil output 2.
13. OUT3 - Motor coil output 3.
14. OUT4 - Motor coil output 4.
15. VCC - Positive supply voltage.

Functional Features

• Microstepping Control: A3979SLPTR supports various microstepping resolutions, allowing for smoother and quieter motor operation.
• Overcurrent Protection: The IC incorporates overcurrent detection and protection mechanisms to prevent damage to the motor or driver.
• Thermal Shutdown: In case of excessive temperature, the IC automatically shuts down to avoid overheating.
• Direction and Step Control: A3979SLPTR provides precise control over the direction and step inputs, enabling accurate motor positioning.

Advantages and Disadvantages

Advantages

• High-performance motor control with microstepping capability.
• Wide operating voltage range allows for versatile applications.
• Built-in protection features enhance reliability.
• Compact surface-mount package for space-saving designs.

Disadvantages

• Limited maximum output current compared to some other motor drivers.
• Requires external components for proper motor current control.

Working Principles

A3979SLPTR operates by receiving input signals through its various pins, such as CP1, CP2, EN, MS1, MS2, RESET, STEP, and DIR. These signals control the motor's rotation, direction, and microstepping resolution. The IC internally generates the necessary drive signals to control the motor coils, resulting in precise motor movement.

Detailed Application Field Plans

A3979SLPTR finds applications in a wide range of fields, including:

1. Robotics: The IC is used in robotic systems that require accurate and smooth motor control for precise movements.
2. CNC Machines: A3979SLPTR enables precise control of stepper motors in computer numerical control (CNC) machines, ensuring accurate positioning and motion control.
3. 3D Printers: The IC is utilized in 3D printers to control the movement of the print head and build platform, enabling high-resolution printing.
4. Automated Equipment: A3979SLPTR is employed in various automated equipment, such as conveyor systems and assembly lines, to control motor-driven mechanisms.

Detailed and Complete Alternative Models

1. DRV8825: This motor driver IC offers similar features and performance to A3979SLPTR, with a higher maximum output current.
2. A4988: Another alternative, providing microstepping capability and reliable motor control at a lower cost.
3. TB6600: This motor driver IC supports higher voltage and current ratings, making it suitable for more demanding applications.

In conclusion, A3979SLPTR is a high-performance stepper motor driver IC that offers microstepping capability, wide operating voltage range, and built-in protection features. Its precise control and compact package make it suitable for various applications in robotics, CNC machines, 3D printers, and automated equipment. Alternative models such as DRV8825, A4988, and TB6600 provide similar functionality with some variations in specifications.