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UDN2981A

Name: UDN2981A
Rating: 4.7 (12 reviews)

IC PWR DRIVER BIPOLAR 1:1 18DIP

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規格

Part Status	Obsolete
Base Product Number	UDN2981
Switch Type	General Purpose
Number of Outputs	8
Ratio - Input:Output	1:1
Output Configuration	High Side
Output Type	Bipolar
Interface	On/Off
Voltage - Load	5V ~ 50V
Voltage - Supply (Vcc/Vdd)	Not Required
Current - Output (Max)	500mA
Input Type	Non-Inverting
Operating Temperature	-20°C ~ 85°C (TA)
Mounting Type	Through Hole
Supplier Device Package	18-DIP
Package	18-DIP (0.300", 7.62mm)
Packaging	Tube

概述

Description

UDN2981A is a dual H-bridge motor driver IC designed for controlling DC motors and stepper motors in various applications. It provides the ability to drive two motors independently, allowing for bidirectional control and speed regulation. The device features a wide voltage range, typically from 4.5V to 36V, and can deliver substantial current per channel, making it suitable for driving larger motors.
Key features include built-in thermal shutdown, current limiting, and an easy-to-use interface for PWM control, enabling efficient motor operation. The UDN2981A supports both logic-level and high-voltage control signals, making it versatile for integration into microcontroller-based systems. Its compact package and robust protection circuits enhance reliability in diverse environments.
Overall, the UDN2981A is an ideal choice for robotics, automation, and other applications requiring precise motor control.

Features

The UDN2981A is a high-performance dual H-bridge driver designed for driving bipolar stepper motors and other inductive loads. Key features include:
1. Dual H-Bridge Configuration: Enables bidirectional control of two motors or a single bipolar stepper motor.
2. High Voltage and Current: Supports up to 50V and 1A continuous current per channel.
3. Thermal Protection: Integrated thermal shutdown circuitry to prevent overheating.
4. Ease of Use: Uses TTL-compatible inputs for simple interfacing with microcontrollers.
5. Enhanced Drive Capability: Features low saturation and high output current.
6. Protection Features: Includes overcurrent protection to safeguard against excess current draw.
7. Compact Package: Available in a DIP package for easy integration into circuits.
The UDN2981A is ideal for applications in robotics, automation, and other systems requiring precise motor control.

Package

The UDN2981A is typically available in a 16-pin dual in-line package (DIP) format. This package type allows for easy integration into circuits and breadboards.

Pinout

The UDN2981A is an octal high-current sink driver designed for driving inductive loads such as relays, lamps, and stepper motors. It comes in a 20-pin DIP (Dual In-line Package) or surface mount package.
Pin Count: 20 pins
Functions:
- Pins 1-8 (OUT1-OUT8): These are the output pins that connect to the loads, providing high current sinking capability.
- Pins 9-16 (IN1-IN8): These are the input pins that control the corresponding output pins; a logic high activates the outputs.
- Pin 17 (GND): Ground reference for the IC.
- Pin 18 (V+): Supply voltage for the outputs, typically between 5V and 50V.
- Pin 19 (COM): Common pin for the output stage to ensure proper operation.
- Pin 20 (NC): Not connected; reserved for future use.
This device is often used in applications requiring the control of multiple loads with high reliability.

Manufacturer

The UDN2981A is manufactured by Texas Instruments (TI), a well-known American technology company. Founded in 1930, Texas Instruments specializes in designing and manufacturing semiconductors and various integrated circuits. They are recognized for their innovation in analog and digital signal processing, as well as for producing a wide range of products including microcontrollers, processors, and sensors. TI serves a diverse set of industries such as automotive, industrial, communications, and consumer electronics, positioning itself as a leader in the semiconductor industry.

Application

The UDN2981A is a dual H-bridge driver used primarily in motor control applications. Its key areas include driving DC motors, stepper motors, and other inductive loads in robotics, automation, and industrial equipment. It is also utilized in consumer electronics, such as printers and home appliances, for precise motion control and direction management. The device is suitable for both low and high-power applications, enabling efficient control of motor functions.

Equivalent

The UDN2981A is a dual high-current driver, often used for driving stepper motors or other inductive loads. Equivalent products include the ULN2003, ULN2803, and the UDN2982A. These chips serve similar functions, offering high-current drive capabilities for inductive loads, though specific pin configurations and ratings may vary. Always check datasheets for compatibility.