L6474PD

Product Overview

• Category: Integrated Circuit (IC)
• Use: Motor Driver
• Characteristics: High-performance, microstepping motor driver with integrated power MOSFETs
• Package: PowerSO24 package
• Essence: Provides a compact and efficient solution for driving bipolar stepper motors in various applications
• Packaging/Quantity: Available in reels of 250 units

Specifications

• Supply Voltage: 8V to 45V
• Output Current: Up to 3.5A
• Microstepping Resolution: Up to 1/128 steps
• Operating Temperature Range: -40°C to +150°C
• Protection Features: Overcurrent, thermal shutdown, and undervoltage lockout

Detailed Pin Configuration

The L6474PD has a total of 24 pins. Here is the detailed pin configuration:

1. VCP - Charge Pump Capacitor
2. CP1 - Charge Pump Capacitor
3. CP2 - Charge Pump Capacitor
4. GND - Ground
5. VREF - Reference Voltage Output
6. REF - Reference Voltage Input
7. VCP - Charge Pump Voltage
8. EN - Enable Input
9. STCK - Step Clock Input
10. DIR - Direction Input
11. M1 - Microstep Resolution Selection
12. M0 - Microstep Resolution Selection
13. VCC - Logic Supply Voltage
14. VCC - Logic Supply Voltage
15. VBB - High-Side Gate Driver Bootstrap Voltage
16. VBB - High-Side Gate Driver Bootstrap Voltage
17. OUTB - Phase B Output
18. OUTB - Phase B Output
19. OUTA - Phase A Output
20. OUTA - Phase A Output
21. GND - Ground
22. VCP - Charge Pump Capacitor
23. CP1 - Charge Pump Capacitor
24. CP2 - Charge Pump Capacitor

Functional Features

• High-performance motor driver with integrated power MOSFETs
• Supports microstepping resolutions up to 1/128 steps
• Advanced current control techniques for smooth and precise motor movements
• Overcurrent protection, thermal shutdown, and undervoltage lockout for enhanced safety
• SPI interface for easy configuration and control

Advantages and Disadvantages

Advantages

• Compact and efficient solution for driving bipolar stepper motors
• Wide supply voltage range allows compatibility with various systems
• High microstepping resolution enables smoother motor movements
• Integrated protection features enhance system reliability
• SPI interface simplifies configuration and control

Disadvantages

• Limited output current of up to 3.5A may not be suitable for high-power applications
• PowerSO24 package may require additional heat dissipation measures in certain cases

Working Principles

The L6474PD is a motor driver IC designed to drive bipolar stepper motors. It utilizes advanced current control techniques to accurately control the motor's position and speed. The integrated power MOSFETs provide high efficiency and compactness.

The IC receives step and direction signals from a controller and generates the necessary current waveforms to drive the motor coils. By controlling the current magnitude and direction, the L6474PD enables precise positioning and smooth motion of the stepper motor.

Detailed Application Field Plans

The L6474PD can be used in various applications that require precise control of bipolar stepper motors. Some potential application fields include:

1. Robotics: Controlling the movement of robotic arms and joints.
2. CNC Machines: Positioning and controlling the movement of cutting tools.
3. 3D Printers: Accurate control of the print head movement.
4. Automated Systems: Precise positioning in automated assembly lines.
5. Medical Equipment: Control of motorized medical devices.

Detailed and Complete Alternative Models

1. L6208PD: Similar motor driver IC with lower output current capability.
2. L6470PD: Motor driver IC with higher microstepping resolution and integrated motion control features.
3. DRV8825: Stepper motor driver IC with adjustable current control and high microstepping resolution.

These alternative models provide different features and specifications, allowing users to choose the most suitable option for their specific application requirements.

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