What is L6203 Chip?

 The L6203 is a dual H-Bridge motor driver IC from STMicroelectronics. It is designed to drive and control DC motors and stepper motors in a variety of applications, providing efficient motor control in both positive and negative directions. The L6203 is widely used in robotics, automotive, industrial, and consumer electronics for applications requiring precise motor control. 

Key Features: 

  1. Dual H-Bridge Motor Driver: The L6203 contains two independent H-Bridge drivers, allowing it to drive two DC motors or one bipolar stepper motor. The H-Bridge configuration allows for bidirectional control, making it ideal for motors that need to rotate in both directions.

  2. High Output Current: The IC can deliver a continuous output current of up to 3.0 A per motor, with peak currents up to 5 A. This makes it suitable for driving motors with medium to high power requirements.

  3. Wide Voltage Range: It operates with a supply voltage of 9V to 38V, making it versatile and compatible with various types of motors, from low-voltage to higher-voltage systems.

  4. Integrated Protection Features: The L6203 includes a range of built-in protection features, including:

    • Overcurrent protection: To prevent damage to the IC in case of a short circuit.
    • Thermal shutdown: Protects the IC from overheating, automatically disabling the driver when the temperature exceeds a safe limit.
    • Under-voltage lockout: Ensures the motor driver operates only when the supply voltage is above a certain threshold, preventing malfunction due to low voltage.

  5. PWM Control: The motor driver supports PWM (Pulse Width Modulation) control, enabling efficient motor speed control. By varying the duty cycle of the PWM signal, the motor’s speed and torque can be adjusted in real-time.

  6. Low Saturation Voltage: The L6203 features low saturation voltage, which contributes to higher efficiency and less heat generation during operation.

  7. Thermal and Electrical Performance: The IC is designed to operate efficiently under a wide range of conditions, and it is capable of dissipating heat effectively, especially when used with adequate heat sinks.

Applications:

  • DC Motor Control: The L6203 is ideal for controlling DC motors in a wide range of applications, including robotics, automated systems, and motorized actuators.
  • Stepper Motor Control: It is also suitable for driving bipolar stepper motors, commonly found in printers, 3D printers, and other precision motion control systems.
  • Automotive Systems: Used in automotive applications such as power seats, mirrors, or other automotive actuators.
  • Consumer Electronics: Found in various consumer devices, including appliances that require precise motor control, such as washing machines and air conditioning units.
  • Industrial Automation: The L6203 is widely used in industrial applications for driving motors in conveyor belts, automated systems, and machinery.

Technical Specifications:

  • Operating Voltage: 9V to 38V.
  • Continuous Output Current: 3.0 A per channel.
  • Peak Output Current: Up to 5 A per channel.
  • Control: PWM input for speed control.
  • Thermal Shutdown: Yes, with thermal protection.
  • Overcurrent Protection: Yes.
  • Package Type: Typically available in PowerSO-20 or DIP-20 packages.

The L6203 is an efficient and reliable motor driver IC suitable for a wide range of applications requiring precise motor control. Its dual H-Bridge configuration, built-in protection features, and high current handling make it a great choice for driving both DC and stepper motors in automotive, industrial, and consumer electronics systems. 

Search List Page： L6203 Parts Search Page | Datasheet PDF | Price | Quantity-MobikeChip 

Reprinted from: https://www.mobikechip.com/static-product-faq-detail/132.html

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