L293D

The L293D is a monolithic integrated high-voltage, high-current four-channel driver designed to accept standard DTL (Digital Transistor Logic) or TTL (Transistor-Transistor Logic) logic levels and drive inductive loads such as relays, solenoids, DC motors, and stepping motors. It is a versatile device suitable for a wide range of applications requiring precise motor control.

Key Features:

1. Four Independent Channels:
   • The L293D features four independent channels, each capable of driving a motor or other inductive load.
   • Each pair of channels can be configured as an H-bridge, allowing for bidirectional control of motors.
2. High-Voltage and High-Current Capability:
   • The device supports a supply voltage range of 4.5V to 36V, making it suitable for a variety of applications.
   • It has a maximum continuous output current capability of 600mA per channel and a peak output current of 1.2A (non-repetitive) per channel.
3. Enable Facility:
   • Each pair of channels is equipped with an enable input, allowing for individual control of each motor or load.
   • When the enable input is high, the associated drivers are enabled and their outputs are active. When the enable input is low, the drivers are disabled and their outputs are off.
4. Logical Input Compatibility:
   • The L293D accepts standard DTL or TTL logic levels as input, making it easy to interface with digital circuits.
   • It has a logical “0” input voltage of up to 1.5V, providing high noise immunity.
5. Overtemperature Protection:
   • The device includes overtemperature protection to prevent damage in case of overheating.
6. Internal Clamp Diodes:
   • Internal clamp diodes are included to suppress inductive transients, protecting the device and the load from damage.
7. Package and Heat Dissipation:
   • The L293D is typically packaged in a 16-lead plastic package with 4 center pins connected together for heat sinking.
   • It is suitable for use in switching applications at frequencies up to 5kHz.

Applications:

• Motor control systems
• Industrial automation
• Robotics
• Automation equipment
• Any other application requiring precise control of motors or other inductive loads.

In summary, the L293D is a powerful and versatile motor driver IC suitable for a wide range of applications. Its high-voltage and high-current capabilities, combined with its logical input compatibility and overtemperature protection, make it an ideal choice for motor control systems and other industrial automation applications.