L293DD 013TR Detailed explanation of pin function specifications and circuit principle instructions
The part number " L293DD013TR " refers to an integrated circuit (IC) used for driving motors in various applications, specifically a dual H-bridge motor driver IC. It is part of the L293D series from Texas Instruments. This IC is commonly used for controlling DC motors, stepper motors, and other types of motors by allowing bidirectional control with the use of external logic.
Package Type:
The L293DD013TR typically comes in a TSSOP-20 (Thin Shrink Small Outline Package) form factor. This means the IC has 20 pins and is designed to be surface-mountable.
Pin Function Specifications and Circuit Principle:
Here’s a detailed explanation of the pin functions for the L293DD013TR in its TSSOP-20 package:
Pin Number Pin Name Function Description 1 Output 1 Motor driver output 1 (connected to one side of the motor). 2 Output 2 Motor driver output 2 (connected to the other side of the motor). 3 Input 1 Input pin 1 (controls Output 1 through a logic signal). 4 Ground (GND) Ground connection for the IC. 5 Input 2 Input pin 2 (controls Output 2 through a logic signal). 6 Output 3 Motor driver output 3 (second motor driver, connected to the motor). 7 Output 4 Motor driver output 4 (second motor driver, connected to the motor). 8 VCC (Motor) Positive Power supply for motor operation (typically 4.5V to 36V). 9 Input 3 Input pin 3 (controls Output 3 through a logic signal). 10 Input 4 Input pin 4 (controls Output 4 through a logic signal). 11 Ground (GND) Ground connection for the IC. 12 Enable 1 Enables Output 1 and Output 2 (logic high enables both outputs). 13 Enable 2 Enables Output 3 and Output 4 (logic high enables both outputs). 14 VCC (Logic) Positive power supply for the IC's logic circuit (typically 4.5V to 5.5V). 15 VCC (Logic) Power for the internal logic (typically 5V). 16 Ground (GND) Ground connection for the logic circuitry. 17 VCC (Logic) Another ground connection for internal logic. 18 VCC (Motor) Power for the motor control outputs. 19 Input 5 Input pin 5 (second motor driver logic input). 20 Input 6 Input pin 6 (second motor driver logic input).Circuit Principle:
The L293DD013TR operates as a dual H-bridge, meaning it can drive two DC motors simultaneously. Each motor has two control inputs (input 1, input 2 for the first motor; input 3, input 4 for the second motor), which determine the direction of the motor's rotation. The output pins for each motor provide the actual drive current to the motor windings. The Enable pins (12 and 13) are used to activate/deactivate the corresponding motor outputs.
The VCC (Motor) pins provide the power to the motors, and the VCC (Logic) pins power the internal logic of the IC.
Common FAQs (in Question-Answer Format):
Q: What is the supply voltage range for the L293DD013TR? A: The L293DD013TR requires a supply voltage range of 4.5V to 36V for motor power (VCC), and 4.5V to 5.5V for logic power (VCC). Q: How many motors can the L293DD013TR control? A: The L293DD013TR can control two DC motors simultaneously, one on each of the two H-bridge circuits. Q: What is the maximum current output of the L293DD013TR? A: Each motor driver output can supply up to 600mA of continuous current, with a peak current of 1.2A. Q: What is the function of the Enable pins? A: The Enable pins (pin 12 and pin 13) allow you to enable or disable the output pins for each motor. When set high, the corresponding motor outputs are enabled. Q: Can I use the L293DD013TR to drive stepper motors? A: Yes, the L293DD013TR can also be used to control stepper motors by controlling the individual windings. Q: How do I control the direction of the motors? A: The direction of each motor is controlled by setting the appropriate input pins (pin 3, pin 5, pin 9, pin 10) high or low. Q: Is the L293DD013TR protected against overcurrent? A: Yes, the L293DD013TR has built-in thermal shutdown and overload protection to safeguard the IC from damage due to excessive current. Q: Can I use the L293DD013TR to control servo motors? A: No, the L293DD013TR is designed for DC motors and stepper motors, not for controlling servo motors. Q: How do I wire the L293DD013TR for a motor? A: Connect the motor to the output pins (pins 1, 2, 6, and 7), and use the input pins (pins 3, 4, 9, and 10) to control the motor direction. Q: Can the L293DD013TR be used with a microcontroller? A: Yes, the L293DD013TR is commonly used with microcontrollers (e.g., Arduino) to control motors via GPIO pins. Q: What is the thermal shutdown temperature of the L293DD013TR? A: The L293DD013TR has a thermal shutdown feature that activates at approximately 150°C. Q: What is the current limiting feature of the L293DD013TR? A: The L293DD013TR has current-limiting built-in, which helps prevent damage from excessive current draw. Q: Can the L293DD013TR handle inductive loads like motors? A: Yes, the L293DD013TR can drive inductive loads such as DC motors, but you may need to use flyback diodes for additional protection. Q: How do I connect the power supply to the L293DD013TR? A: Connect the motor power supply to the VCC (Motor) pins, and the logic power supply to the VCC (Logic) pins. Q: What happens if I exceed the current limit on the L293DD013TR? A: If the current limit is exceeded, the IC will enter thermal shutdown to protect itself. Q: Can I use the L293DD013TR without a heatsink? A: It is possible, but a heatsink is recommended for high-current applications to ensure proper cooling. Q: What is the minimum voltage required to operate the L293DD013TR? A: The minimum voltage required to operate the L293DD013TR is 4.5V for logic power and 4.5V for motor power. Q: How do I control the speed of the motor with the L293DD013TR? A: Speed control can be achieved by using Pulse Width Modulation (PWM) on the input pins. Q: Can the L293DD013TR be used for bidirectional motor control? A: Yes, the L293DD013TR can control a motor in both directions by setting the input pins appropriately. Q: What should I do if the L293DD013TR gets too hot? A: If the IC gets too hot, ensure that the motor is not drawing excessive current and consider adding a heatsink or improving ventilation.Let me know if you need further clarification!
