SLA7077MR

Product Overview

Category: Integrated Circuit (IC)

Use: SLA7077MR is a motor driver IC used for controlling the speed and direction of stepper motors.

Characteristics: - High efficiency - Low power consumption - Compact size - Easy to integrate into motor control systems

Package: The SLA7077MR comes in a compact 24-pin package.

Essence: This IC is designed to provide precise and reliable control over stepper motors, making it suitable for various applications that require accurate positioning and motion control.

Packaging/Quantity: The SLA7077MR is typically sold in reels containing multiple units. The exact quantity depends on the supplier and customer requirements.

Specifications

• Supply Voltage: 12V - 36V
• Output Current: Up to 2.5A per phase
• Logic Input Voltage: 3.3V - 5V
• Operating Temperature Range: -40°C to +85°C
• Step Modes: Full step, half step, microstep (1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128)

Detailed Pin Configuration

The SLA7077MR has a total of 24 pins. Here is the detailed pin configuration:

1. VCC1: Motor power supply positive terminal
2. GND1: Motor power supply ground terminal
3. OUT1A: Motor coil A output
4. OUT1B: Motor coil B output
5. OUT2A: Motor coil C output
6. OUT2B: Motor coil D output
7. VREF1: Reference voltage input for motor current control
8. VREF2: Reference voltage input for motor current control
9. CP1: Clockwise pulse input
10. CW1: Clockwise control input
11. CP2: Counterclockwise pulse input
12. CCW1: Counterclockwise control input
13. MODE0: Microstep mode selection bit 0
14. MODE1: Microstep mode selection bit 1
15. MODE2: Microstep mode selection bit 2
16. GND2: Ground terminal for logic inputs
17. VCC2: Logic power supply positive terminal
18. RESET: Reset input
19. SLEEP: Sleep mode control input
20. ENABLE: Output enable control input
21. FAULT: Fault detection output
22. STATUS: Status output
23. NC: Not connected
24. NC: Not connected

Functional Features

• High-speed and precise motor control
• Adjustable motor current through reference voltage inputs
• Microstepping capability for smoother motion
• Built-in fault detection and status outputs
• Sleep mode for power-saving operation
• Easy integration into motor control systems

Advantages and Disadvantages

Advantages: - High efficiency and low power consumption - Compact size allows for space-saving designs - Precise control over stepper motors - Versatile microstepping options for smoother motion - Built-in fault detection enhances system reliability

Disadvantages: - Limited to stepper motor control applications - Requires external power supply and logic level signals - May require additional circuitry for advanced motor control features

Working Principles

The SLA7077MR operates by receiving control signals from an external microcontroller or driver circuit. These signals determine the direction and speed of the connected stepper motor. The IC generates the necessary current waveforms to drive the motor coils, enabling precise positioning and motion control.

Detailed Application Field Plans

The SLA7077MR is widely used in various applications that require accurate control over stepper motors. Some common application fields include:

1. Robotics: Used in robotic systems for precise movement and positioning of robot arms, grippers, and other motorized components.
2. CNC Machines: Integrated into computer numerical control (CNC) machines to control the movement of cutting tools, spindles, and other motor-driven parts.
3. 3D Printers: Utilized in 3D printers to control the motion of print heads and build platforms, ensuring accurate layer-by-layer printing.
4. Automated Test Equipment: Incorporated into test equipment to control the movement of probes, stages, and other motorized components during testing processes.
5. Medical Devices: Applied in medical devices such as surgical robots, infusion pumps, and diagnostic equipment to achieve precise and controlled movements.

Detailed and Complete Alternative Models

1. A4988: Another popular motor driver IC with similar features and capabilities.
2. DRV8825: Offers higher current handling and advanced microstepping options compared to SLA7077MR.
3. TB6600: Suitable for driving larger stepper motors with higher power requirements.
4. L298N: Dual