Overview
The LM293D is a dual H-bridge motor driver integrated circuit (IC) produced by STMicroelectronics. It is designed to control the direction and speed of two DC motors or a single stepper motor, making it a versatile solution for motor control applications. The LM293D is widely recognized for its high performance, reliability, and ease of use, making it a popular choice in robotics, automotive systems, and consumer electronics. Its internal protection features, such as overcurrent and thermal protection, ensure safe operation in various environments.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage (VCC) | 4.5 to 36 | V | Operating range |
| Output Current (IO) | 600 | mA | Per channel |
| Control Logic Voltage (VCC1) | 5 | V | TTL/CMOS compatible |
| Operating Temperature (TA) | 0 to 70 | °C | Standard range |
| Package | DIP-16 | - | 16-pin dual in-line package |
| Motor Type | DC, Stepper | - | Supports bidirectional control |
| Protection Features | Overcurrent, Thermal | - | Built-in safety mechanisms |
Key Features
- Dual H-bridge design for controlling two DC motors or one stepper motor.
- Wide operating voltage range (4.5V to 36V) for compatibility with various power supplies.
- High output current capability (600mA per channel) to drive small to medium-sized motors.
- Integrated protection features, including overcurrent and thermal shutdown, enhance reliability.
- TTL/CMOS-compatible control logic for easy interfacing with microcontrollers and logic circuits.
Applications
The LM293D is extensively used in applications requiring precise motor control. It is ideal for robotics, where it drives wheels or actuators, and in automotive systems for controlling window lifts or wipers. In consumer electronics, it is employed in appliances like fans and small household devices. Its ability to handle inductive loads also makes it suitable for driving relays and solenoids in industrial automation.
Q & A
1. What is the maximum output current of the LM293D?
The LM293D can deliver up to 600mA per channel.
2. What is the operating voltage range of the LM293D?
The operating voltage ranges from 4.5V to 36V.
3. Can the LM293D control stepper motors?
Yes, the LM293D can control both DC motors and stepper motors.
4. What protection features does the LM293D include?
It includes overcurrent and thermal protection to ensure safe operation.
5. What type of package does the LM293D use?
The LM293D is available in a 16-pin DIP package.
6. Is the LM293D compatible with 3.3V logic?
No, the control logic voltage is 5V, making it compatible with TTL/CMOS logic but not 3.3V directly.
7. How many motors can the LM293D control simultaneously?
It can control two DC motors or one stepper motor.
8. What is the typical application of the LM293D?
It is commonly used in robotics, automotive systems, and consumer electronics.
9. Does the LM293D support PWM control?
Yes, PWM can be applied to the enable pins for speed control.
10. What is the operating temperature range of the LM293D?
It operates within a temperature range of 0°C to 70°C.
