Allegro MicroSystems A3987SLPTR-T

Allegro MicroSystems A3987SLPTR-T Environmental and export classification status description

The A3987SLPTR-T is a microstepping driver with built-in control logic and driver circuitry suitable for driving bipolar stepper motors. It allows for smooth control and high precision of motor movement by providing microstepping capability, reducing vibrations, and improving performance. The device includes features such as adjustable current control, various stepping modes, and overcurrent protection. Functions 1. Microstepping Control: The A3987 supports full-step, half-step, and microstepping modes to enable smooth motion and higher resolution. 2. Current Control: The IC includes programmable current control features that allow users to adjust the motor current to their needs. 3. Thermal Protection: The A3987 has built-in thermal shutdown protection to ensure the device operates within safe temperature limits. 4. Overcurrent Protection: It features overcurrent protection to help prevent damage to the motor and driver circuit. 5. Phase Control: It can control the phases of the motor based on the input signals provided, allowing for precise motor control. Applications - 3D Printers - CNC Machinery - Robotics - Automated Manufacturing Equipment - Surveillance Systems Alternative Parts 1. A4988: A microstepping driver for bipolar stepper motors, well-established, but with slightly different specification goals. 2. DRV8825: A stepper motor driver that provides a higher breakdown voltage and can handle higher current than the A3987. 3. TB6600: A high-performance stepper motor driver used in various industrial applications, typically rated for higher current. 4. L298N: An older model that can drive stepper motors but lacks the microstepping feature of the A3987. Embedded Modules There are several development boards and modules that may incorporate the A3987 or similar drivers. These could include: - Pololu's A3987 Carrier Board - Stepper motor driver breakouts with Arduino compatibility - Raspberry Pi compatible stepper motor driver shields Related Q&A 1. Q: What types of motors can the A3987SLPTR-T drive? A: The A3987SLPTR-T is designed specifically for driving bipolar stepper motors. 2. Q: How does the microstepping feature of the A3987 benefit motion control? A: Microstepping allows for smoother operation, quieter motor performance, and better resolution in positioning, which is essential for applications requiring precision. 3. Q: Can the current output of the A3987 be adjusted? A: Yes, the A3987 provides adjustable current control features, allowing users to set the desired motor current based on their specific application requirements. 4. Q: What safety features are included in the A3987SLPTR-T? A: The A3987 includes thermal shutdown and overcurrent protection to safeguard both the driver and the motor against damage during operation. 5. Q: Are there development modules available for the A3987? A: Yes, there are several carrier boards and development modules available that are compatible with the A3987SLPTR-T, making it easier to integrate into projects.