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L9474N

L9474N

Product Overview

Category: Integrated Circuit (IC)

Use: Motor Driver

Characteristics: - High voltage capability - Low saturation voltage - Built-in protection features - Suitable for driving DC motors

Package: DIP (Dual In-line Package)

Essence: L9474N is a motor driver IC designed to control the speed and direction of DC motors.

Packaging/Quantity: The L9474N is typically sold in packs of 10 units.

Specifications

  • Supply Voltage: 12V - 48V
  • Output Current: Up to 2.5A
  • Operating Temperature Range: -40°C to +150°C
  • Number of Pins: 24

Detailed Pin Configuration

  1. VCC - Positive supply voltage
  2. GND - Ground reference
  3. IN1 - Input 1 for motor control
  4. IN2 - Input 2 for motor control
  5. IN3 - Input 3 for motor control
  6. IN4 - Input 4 for motor control
  7. OUT1 - Output 1 for motor control
  8. OUT2 - Output 2 for motor control
  9. OUT3 - Output 3 for motor control
  10. OUT4 - Output 4 for motor control
  11. VREF - Reference voltage for internal circuitry
  12. VCP - Charge pump capacitor connection
  13. CP1 - Charge pump capacitor connection
  14. CP2 - Charge pump capacitor connection
  15. CP3 - Charge pump capacitor connection
  16. CP4 - Charge pump capacitor connection
  17. VSENSE - Sense resistor connection for current sensing
  18. VREF2 - Reference voltage for current sensing
  19. VBOOT - Bootstrap capacitor connection
  20. VDD - Logic supply voltage
  21. VSS - Logic ground reference
  22. VDDA - Analog supply voltage
  23. VSSA - Analog ground reference
  24. NC - No connection

Functional Features

  • Bidirectional control of DC motors
  • Adjustable motor speed and direction
  • Overcurrent protection
  • Thermal shutdown protection
  • Undervoltage lockout protection

Advantages and Disadvantages

Advantages: - High voltage capability allows driving a wide range of motors - Low saturation voltage minimizes power loss - Built-in protection features enhance system reliability - Versatile motor control options

Disadvantages: - Limited output current may not be suitable for high-power applications - Requires external components for proper operation

Working Principles

The L9474N motor driver IC utilizes a combination of internal circuitry and external components to control the speed and direction of DC motors. It receives input signals from the control circuitry and generates corresponding output signals to drive the motor coils. By adjusting the timing and sequence of these signals, the motor's speed and direction can be controlled.

Detailed Application Field Plans

The L9474N motor driver IC finds applications in various fields, including: 1. Robotics: Controlling the movement of robotic arms and mobile robots. 2. Automotive: Powering window regulators, seat adjustment mechanisms, and other motorized automotive systems. 3. Industrial Automation: Driving conveyor belts, pumps, and other industrial machinery. 4. Home Appliances: Controlling the operation of fans, blowers, and other motor-driven appliances.

Detailed and Complete Alternative Models

  1. L293D: Dual H-Bridge motor driver IC with similar functionality.
  2. SN754410: Quadruple Half-H driver IC suitable for driving small DC motors.
  3. TB6612FNG: Dual motor driver IC with built-in protection features.

These alternative models offer similar motor control capabilities and can be used as substitutes for the L9474N in various applications.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací L9474N v technických řešeních

Sure! Here are 10 common questions and answers related to the application of L9474N in technical solutions:

  1. Q: What is L9474N? A: L9474N is a high-current stepper motor driver integrated circuit (IC) commonly used in technical solutions.

  2. Q: What is the maximum current rating of L9474N? A: The maximum current rating of L9474N is typically around 3.5 Amperes.

  3. Q: Can L9474N be used with both bipolar and unipolar stepper motors? A: Yes, L9474N can be used with both bipolar and unipolar stepper motors.

  4. Q: How many control inputs does L9474N have? A: L9474N has four control inputs, namely Step, Direction, Enable, and Reset.

  5. Q: What is the purpose of the Enable input in L9474N? A: The Enable input is used to enable or disable the motor driver output.

  6. Q: How can I control the speed of the stepper motor using L9474N? A: The speed of the stepper motor can be controlled by varying the frequency of the Step input signal.

  7. Q: Does L9474N provide any protection features for the motor and driver circuitry? A: Yes, L9474N includes built-in thermal shutdown and overcurrent protection features to safeguard the motor and driver.

  8. Q: Can L9474N operate in microstepping mode? A: No, L9474N does not support microstepping. It operates in full-step or half-step modes only.

  9. Q: What is the recommended power supply voltage range for L9474N? A: The recommended power supply voltage range for L9474N is typically between 8V and 50V.

  10. Q: Are there any application notes or reference designs available for L9474N? A: Yes, the manufacturer of L9474N provides application notes and reference designs that can help in implementing the IC in various technical solutions.

Please note that the answers provided here are general and may vary depending on the specific datasheet and documentation of L9474N.