A4987SESTR-T

Product Overview

Category

A4987SESTR-T belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for motor control applications.

Characteristics

• Integrated circuit designed for motor control
• High-performance stepper motor driver
• Suitable for a wide range of applications
• Provides precise and efficient motor control

Package

A4987SESTR-T is available in a surface-mount package.

Essence

The essence of A4987SESTR-T lies in its ability to accurately control stepper motors, making it an essential component in various motor control systems.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a specific quantity per package depending on the manufacturer's specifications.

Specifications

• Operating Voltage: 8V to 35V
• Output Current: Up to 2A per phase
• Microstepping Resolution: Up to 1/16 step
• Logic Voltage: 3.3V or 5V compatible
• Thermal Shutdown Circuitry: Yes
• Overcurrent Protection: Yes
• Fault Condition Detection: Yes

Detailed Pin Configuration

The A4987SESTR-T has the following pin configuration:

1. VDD - Power supply voltage input
2. GND - Ground reference
3. MS1 - Microstep resolution selection pin 1
4. MS2 - Microstep resolution selection pin 2
5. RESET - Reset input
6. SLEEP - Sleep mode control input
7. ENABLE - Enable motor output
8. STEP - Step input
9. DIR - Direction input
10. REF - Reference voltage input
11. OUT1 - Motor coil 1 output
12. OUT2 - Motor coil 2 output
13. OUT3 - Motor coil 3 output
14. OUT4 - Motor coil 4 output

Functional Features

• Microstepping control for smooth motor operation
• Adjustable current control for optimal performance
• Fault condition detection for enhanced safety
• Thermal shutdown circuitry to prevent overheating
• Sleep mode for power-saving operation
• Direction and step inputs for precise motor control

Advantages and Disadvantages

Advantages

• High-performance motor control
• Wide operating voltage range
• Flexible microstepping resolution
• Overcurrent protection for motor safety
• Compact surface-mount package

Disadvantages

• Requires external components for complete motor control system
• Limited to stepper motor applications

Working Principles

The A4987SESTR-T operates by receiving control signals through its input pins, which determine the direction and step size of the connected stepper motor. It utilizes advanced microstepping techniques to achieve smooth and precise motor movement. The integrated current control ensures optimal performance while protecting the motor from overcurrent conditions. In case of fault conditions or excessive temperature, the thermal shutdown circuitry activates to prevent damage.

Detailed Application Field Plans

The A4987SESTR-T is widely used in various applications that require accurate motor control. Some common application fields include:

1. Robotics: This IC is utilized in robotic systems to control the movement of robotic arms, legs, or other motorized components.
2. CNC Machines: A4987SESTR-T is employed in computer numerical control (CNC) machines to precisely control the motion of cutting tools or workpieces.
3. 3D Printers: This product plays a crucial role in 3D printers, enabling precise positioning of the print head and controlling the extrusion process.
4. Automated Equipment: A4987SESTR-T is used in automated equipment such as conveyor systems, assembly lines, and packaging machines to ensure accurate and efficient movement.

Detailed and Complete Alternative Models

1. A4988: Similar to A4987SESTR-T, this IC offers high-performance motor control with adjustable current and microstepping resolution.
2. DRV8825: Another alternative, DRV8825 provides advanced features like automatic decay mode detection and over-temperature shutdown.
3. TB6600: This model is suitable for higher current applications and offers various microstepping options.

These alternative models can be considered based on specific requirements and compatibility with the motor control system.

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