UDN2981A

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UDN2981A

+БОМ

IC PWR DRIVER BIPOLAR 1:1 18DIP

  • Производителькомпанией Allegro MicroSystems

  • Мфр. Часть #UDN2981A

  • Лист данных UDN2981A DataSheet

  • В наличии5156

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Спецификации

Атрибут Ценность
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

Обзор

Description

UDN2981A is a dual H-bridge motor driver IC designed for controlling DC motors and stepper motors in various applications. It features integrated protection circuits, including thermal shutdown and current limiting, ensuring reliable operation. The UDN2981A can drive two motors independently, allowing for bi-directional control, making it suitable for robotics, automation, and consumer electronics.
It operates over a wide voltage range, typically from 4.5V to 36V, and can handle continuous currents of up to 1.5A per channel. The IC simplifies the interfacing process with microcontrollers and other logic devices, providing a straightforward method to control motor speed and direction through standard logic signals.
Its compact design and efficient heat dissipation make it a popular choice for embedded systems where space and performance are critical. Overall, the UDN2981A is a versatile solution for motor control applications, combining ease of use with robust performance characteristics.

Equivalent

The UDN2981A is a dual high-current driver IC. Equivalent products include the ULN2003, ULN2803, and UDN2982A. These alternatives also provide high-voltage and high-current driving capabilities for inductive loads. It's essential to verify specific application requirements such as voltage, current ratings, and pin configurations when selecting an equivalent.

Features

The UDN2981A is a high-voltage, high-current dual output driver designed for driving inductive loads such as relays, solenoids, and motors. Key features include:
1. Dual Output: It provides two independent outputs capable of driving loads up to 500 mA each.
2. High Voltage: Operates at a supply voltage of up to 50V, making it suitable for various applications.
3. Integrated Diodes: Contains built-in flyback diodes for inductive load protection, enhancing reliability and circuit protection.
4. TTL Compatible: Accepts TTL-level inputs, allowing easy interfacing with microcontrollers or logic devices.
5. Thermal Protection: Features thermal shutdown to prevent overheating during operation.
6. Wide Temperature Range: Operates effectively in a broad temperature range from -40°C to +85°C.
7. Compact Package: Available in a 16-pin DIP or surface-mount package, facilitating easy integration into designs.
These features make the UDN2981A suitable for various industrial and consumer applications where robust drive capabilities are required.

Pinout

The UDN2981A is an octal high-current driver designed for driving inductive loads such as relays, solenoids, and stepper motors. It features a total of 18 pins, and its pin configuration includes:
1. Inputs (Pins 1-8): These are the control inputs (A1-A8) for the respective outputs.
2. Outputs (Pins 9-16): These pins (Y1-Y8) are the high-current output stages that connect to the loads.
3. Common Pin (Pin 17): This is the common pin for the load, usually connected to the power supply.
4. Ground (Pin 18): This pin is used for the ground reference.
The UDN2981A can sink a significant amount of current (up to 500 mA per channel) and operates with a voltage range typically from 4.5V to 50V. It is widely used in applications requiring multiple outputs to control high-power devices.

Manufacturer

The UDN2981A is manufactured by Texas Instruments (TI), a prominent American technology company. Founded in 1930, Texas Instruments specializes in designing and producing a wide range of semiconductors and integrated circuits, including analog, digital, and mixed-signal devices. TI is known for its innovative solutions in various sectors, such as automotive, industrial, communications, consumer electronics, and computing. The UDN2981A specifically is a high-voltage, high-current driver designed for controlling loads like motors and relays, making it useful in industrial applications and automation systems. Texas Instruments is recognized for its commitment to quality, performance, and reliability in electronic components.

Application

The UDN2981A is a high-current, dual H-bridge driver IC primarily used in applications that require control of DC motors, stepper motors, and solenoids. Common application areas include robotics, automated systems, and industrial equipment where precise motor control is essential. It is also utilized in automotive controls, consumer electronics, and home automation systems for driving actuators and motion systems. The IC supports bi-directional and speed control, making it suitable for various applications that require efficient motor management.

Package

The UDN2981A is typically packaged in a 16-pin dual in-line package (DIP) format.

Frequently Asked Questions


Q: What is the maximum load voltage this driver can handle?
A: The UDN2981A can handle a load voltage range of 5V to 50V, making it suitable for high-side switching applications.


Q: Does this IC require an external Vcc supply for logic?
A: No, the "Voltage - Supply (Vcc/Vdd): Not Required" parameter indicates it operates without a separate logic supply, directly driven by input signals.


Q: What is the continuous output current per channel?
A: Each of the 8 outputs can source up to 500mA continuously, ideal for driving relays, solenoids, or lamps.


Q: Is the output configuration high-side or low-side?
A: It is a high-side driver with bipolar outputs, meaning it connects the load to the positive supply, with output type specified as "Bipolar".


Q: What input type does this device support?
A: It features non-inverting inputs, so a logic high input turns the corresponding output on, simplifying control logic design.


Q: Can this chip be used in automotive or industrial environments?
A: With an operating temperature range of -20°C to 85°C, it is suitable for many industrial and commercial applications, but is now marked as Obsolete.


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