ULN2003AING4

Product Overview

Category

The ULN2003AING4 belongs to the category of integrated circuits (ICs) and specifically falls under the family of Darlington transistor arrays.

Use

This product is commonly used as a high-voltage, high-current Darlington transistor array. It is designed to be used as an interface between low-level logic and high-power loads in applications such as relays, solenoids, and stepper motors.

Characteristics

• High-Voltage and High-Current Capability
• Suitable for Driving Inductive Loads
• TTL/CMOS/PMOS/DTL Compatible Inputs
• Open-Collector Outputs
• Common-Cathode Clamp Diodes

Package

The ULN2003AING4 is typically available in a 16-pin DIP (Dual Inline Package) or SOIC (Small Outline Integrated Circuit) package.

Packaging/Quantity

It is commonly packaged in tubes, trays, or reels, with quantities varying based on manufacturer specifications.

Specifications

• Maximum Output Current: 500 mA per channel
• Maximum Output Voltage: 50 V
• Input Voltage: 5 V to 15 V
• Operating Temperature Range: -20°C to 85°C
• Power Dissipation: 2.25 W

Detailed Pin Configuration

The ULN2003AING4 features a 16-pin configuration with each pin serving specific functions related to input, output, and power supply connections.

| Pin Number | Function | |------------|----------------| | 1 | Input 1 | | 2 | Input 2 | | 3 | Input 3 | | 4 | Input 4 | | 5 | Input 5 | | 6 | Input 6 | | 7 | GND | | 8 | Output 1 | | 9 | Output 2 | | 10 | Output 3 | | 11 | Output 4 | | 12 | Output 5 | | 13 | Output 6 | | 14 | COM (Common) | | 15 | COM (Common) | | 16 | Vcc (Power In) |

Functional Features

• High-Voltage and High-Current Capability: The ULN2003AING4 can handle significant voltage and current levels, making it suitable for driving various high-power loads.
• Open-Collector Outputs: The open-collector outputs allow for easy interfacing with external circuitry and devices.
• Clamp Diodes: The built-in clamp diodes provide protection against back EMF generated by inductive loads, enhancing the reliability of the connected components.

Advantages and Disadvantages

Advantages

• Robustness in driving inductive loads
• Compatibility with various logic levels
• Built-in protection diodes for inductive load applications

Disadvantages

• Limited maximum output current per channel
• Requires external freewheeling diodes for certain applications

Working Principles

The ULN2003AING4 operates based on the principle of using Darlington transistor pairs to amplify and switch input signals to control higher power loads. When an input signal is applied, the corresponding output transistor pair conducts, allowing current to flow through the connected load.

Detailed Application Field Plans

The ULN2003AING4 finds extensive use in various applications, including: - Driving relay coils in industrial automation systems - Controlling stepper motors in robotics and CNC machines - Activating solenoid valves in automotive and HVAC systems - Switching high-power LEDs in lighting applications

Detailed and Complete Alternative Models

Some alternative models to the ULN2003AING4 include the ULN2001, ULN2002, and ULN2004, which offer similar functionality with variations in the number of channels and package types.

In conclusion, the ULN2003AING4 serves as a versatile and reliable solution for interfacing low-level logic signals with high-power loads, finding widespread use across diverse industries due to its robustness and compatibility with various applications.

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