ULQ2003ATDRG4Q1

Product Overview

Category: Integrated Circuit (IC)

Use: ULQ2003ATDRG4Q1 is a high-voltage, high-current Darlington transistor array. It is commonly used as a driver for inductive loads such as relays, solenoids, and stepper motors.

Characteristics: - High voltage capability (up to 50V) - High current capacity (up to 500mA per channel) - Darlington configuration for improved performance - Built-in clamp diodes for inductive load protection

Package: ULQ2003ATDRG4Q1 is available in a 16-pin SOIC (Small Outline Integrated Circuit) package.

Essence: The essence of ULQ2003ATDRG4Q1 lies in its ability to provide a convenient and reliable solution for driving high-power loads with minimal external components.

Packaging/Quantity: ULQ2003ATDRG4Q1 is typically sold in reels containing 250 units per reel.

Specifications

• Supply Voltage: 5V - 50V
• Output Current: Up to 500mA per channel
• Number of Channels: 7
• Input Logic Compatibility: TTL, CMOS
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The pin configuration of ULQ2003ATDRG4Q1 is as follows:

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| | | 1 2 3 | | | | 4 5 6 | | | | 7 8 9 | | | | 10 11 12 | |___________| ```

Pin Description: 1. Output 1 2. Output 2 3. Output 3 4. Output 4 5. Output 5 6. Output 6 7. Output 7 8. GND (Ground) 9. Input 1 10. Input 2 11. Input 3 12. Input 4

Functional Features

• High voltage and current capability for driving inductive loads.
• Darlington configuration provides high gain and low saturation voltage.
• Built-in clamp diodes protect against voltage spikes generated by inductive loads.
• TTL and CMOS compatible inputs for easy interfacing with microcontrollers and logic circuits.

Advantages and Disadvantages

Advantages: - Simplifies the design of high-power load drivers. - Provides reliable and efficient performance. - Protects against voltage spikes with built-in clamp diodes. - Compatible with a wide range of input logic levels.

Disadvantages: - Limited to driving inductive loads. - Requires external components for proper operation. - Higher power dissipation compared to other driver solutions.

Working Principles

ULQ2003ATDRG4Q1 utilizes the Darlington transistor configuration, which consists of two bipolar transistors connected in series. This configuration provides high current gain and low saturation voltage, making it suitable for driving high-power loads.

When an input signal is applied to one of the input pins, the corresponding output pin turns on, allowing current to flow through the load. The built-in clamp diodes protect the IC from voltage spikes generated by the inductive load when it is turned off.

Application Field Plans

ULQ2003ATDRG4Q1 finds applications in various fields, including: - Industrial automation - Robotics - Automotive systems - Home appliances - Medical equipment

It is commonly used in applications where driving inductive loads is required, such as relay control, solenoid actuation, and stepper motor driving.

Alternative Models

Some alternative models to ULQ2003ATDRG4Q1 include: - ULN2003A - ULN2803A - L293D - L298N

These models offer similar functionality and can be used as alternatives depending on specific requirements and availability.

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