L293B

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L293B

IC MTR DRV BIPOLAR 4.5-36V 16DIP

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規格

Package Bulk
ProductStatus Active
MotorType-Stepper Bipolar
MotorType-ACDC Brushed DC
Function Driver - Fully Integrated, Control and Power Stage
OutputConfiguration Half Bridge (4)
Interface Parallel
Applications General Purpose
Current-Output 1A
Voltage-Supply 4.5V ~ 36V
Voltage-Load 4.5V ~ 36V
OperatingTemperature -40°C ~ 150°C (TJ)
MountingType Through Hole
Package/Case 16-DIP (0.300, 7.62mm)

概述

Description

The L293B is a quadruple high-current half-H driver integrated circuit (IC), commonly used for controlling small motors and inductive loads in robotics and automation applications. It is designed to provide bidirectional current control, making it suitable for driving DC motors, stepper motors, and other inductive loads.
Key features of the L293B include:
1. Output Configuration: It has four half-H drivers, which can be configured as two full H-bridges, allowing for individual control of two DC motors.
2. Current Handling: Each output channel can handle up to 1A continuous current and can withstand peak currents up to 2A, making it suitable for small to medium-sized motors.
3. Voltage Compatibility: The L293B operates within a wide voltage range, typically between 4.5V and 36V, accommodating various power supply levels.
4. Protection Features: The IC includes thermal shutdown and internal ESD protection to prevent damage from overheating and electrostatic discharge.
5. Ease of Use: With its straightforward pin configuration and control logic, the L293B is relatively easy to integrate into electronic projects.
Overall, the L293B is a versatile and cost-effective choice for motor control in hobbyist and educational projects.

Features

The L293B is an integrated circuit (IC) often used for driving inductive loads such as relays, solenoids, DC and stepping motors. It is part of the L293 series of quadruple high-current half-H drivers. Here are some key features of the L293B:
1. Dual H-Bridge: It contains two full H-bridge drivers, allowing it to control two DC motors or one stepper motor.
2. High Current Capability: It can supply output currents up to 1A per channel.
3. Wide Operating Voltage: The IC operates within a voltage range of 4.5V to 36V, making it suitable for a variety of applications.
4. Separate Input Logic: Each channel is independently controlled by its own set of logic inputs.
5. Temperature Protection: Built-in thermal shutdown to prevent damage from overheating.
6. Enable Pins: Each H-bridge has an enable input, allowing for control of the driver’s output.
7. Output Diodes: Includes flyback diodes for protection against back EMF.
8. Standard Package: Typically available in a 16-pin dual in-line package (DIP).
Overall, the L293B is a versatile and reliable choice for motor control applications.

Package

The L293B is a dual H-bridge motor driver IC typically available in a 16-pin DIP (Dual In-line Package). This package allows it to be easily mounted on a breadboard or through-hole PCB for controlling DC motors and stepper motors.

Pinout

The L293B is a quadruple high-current half-H driver designed to provide bidirectional drive currents of up to 1 A at voltages from 4.5 V to 36 V. It is commonly used to drive inductive loads such as relays, solenoids, DC and bipolar stepping motors, as well as other high-current/high-voltage loads in positive-supply applications.
The L293B comes in a 16-pin package with the following pin configuration:
1. Ground (GND)
2. Input 1
3. Output 1
4. Output 2
5. Input 2
6. Enable 1
7. VCC1 (Logic Supply Voltage)
8. VCC2 (Supply Voltage for Output Stages)
9. Enable 2
10. Input 3
11. Output 3
12. Output 4
13. Input 4
14. Ground (GND)
15. Enable 3
16. Enable 4
The device enables high-current, high-voltage drive with minimal power dissipation and facilitates easy interfacing to standard TTL logic.

Manufacturer

The L293B is manufactured by STMicroelectronics. STMicroelectronics is a multinational electronics and semiconductor manufacturer headquartered in Geneva, Switzerland. The company is one of the world's largest semiconductor companies and provides a wide range of products, including microcontrollers, sensors, analog devices, power management components, and motor drivers like the L293B. STMicroelectronics serves various industries, including automotive, industrial, personal electronics, and communications.

Application

The L293B is a quadruple high-current half-H driver integrated circuit used primarily in motor control applications. It can drive small DC motors and stepper motors, making it ideal for robotics, automation, and mechatronics. Additionally, the L293B is used in applications requiring bidirectional motor control, such as conveyor systems and basic home automation projects. Its ability to control inductive loads like relays and solenoids further extends its use in industrial control systems.

Equivalent

The L293B is a motor driver IC. Equivalent products include the L293D, which has built-in flyback diodes for inductive load protection, the SN754410 from Texas Instruments, and the L298N, which is a dual H-bridge driver with higher current capacity. These alternatives are used for similar DC motor and stepper motor driving applications.

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