ULQ2003ATDQ1

Product Overview

Category

The ULQ2003ATDQ1 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used as a high-voltage, high-current Darlington transistor array.

Characteristics

• High voltage capability: The ULQ2003ATDQ1 can handle voltages up to 50V.
• High current capability: It can handle currents up to 500mA per channel.
• Darlington configuration: The IC consists of seven NPN Darlington pairs that provide high current gain.
• Low saturation voltage: The ULQ2003ATDQ1 exhibits low voltage drop across its output transistors when conducting.

Package

The ULQ2003ATDQ1 is available in a standard 16-pin dual in-line package (DIP).

Essence

The essence of this product lies in its ability to control high-voltage and high-current loads using a compact and efficient integrated circuit.

Packaging/Quantity

The ULQ2003ATDQ1 is typically packaged in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Supply voltage range: 5V to 50V
• Output current per channel: Up to 500mA
• Input voltage compatibility: Compatible with TTL, CMOS, and PMOS logic levels
• Operating temperature range: -40°C to +85°C
• Maximum power dissipation: 1000mW

Detailed Pin Configuration

The ULQ2003ATDQ1 features a 16-pin DIP package with the following pin configuration:

1. Input 1
2. Output 1
3. Common
4. Output 2
5. Input 2
6. Output 3
7. Input 3
8. Output 4
9. Input 4
10. Output 5
11. Input 5
12. Output 6
13. Input 6
14. Output 7
15. VCC
16. GND

Functional Features

• High current amplification: The Darlington configuration of the ULQ2003ATDQ1 allows for high current gain, enabling efficient control of high-current loads.
• Low saturation voltage: The IC exhibits low voltage drop across its output transistors when conducting, minimizing power dissipation and heat generation.
• Built-in flyback diodes: Each output channel is equipped with a built-in flyback diode to protect against inductive kickback.

Advantages and Disadvantages

Advantages

• Compact and integrated solution for high-voltage and high-current control applications.
• High current gain provided by the Darlington configuration.
• Low saturation voltage reduces power dissipation.

Disadvantages

• Limited output current per channel (up to 500mA).
• Restricted supply voltage range (5V to 50V).

Working Principles

The ULQ2003ATDQ1 operates based on the principles of Darlington transistor pairs. When an input signal is applied to one of the input pins, the corresponding output pin activates the Darlington pair, allowing current to flow through the load connected to it. By controlling the input signals, the ULQ2003ATDQ1 can selectively activate or deactivate the output channels.

Detailed Application Field Plans

The ULQ2003ATDQ1 finds extensive use in various applications, including:

1. Motor control circuits: The IC can be used to drive stepper motors, DC motors, and other high-current motor loads.
2. Relay and solenoid control: It enables efficient control of relays and solenoids in industrial automation systems.
3. Lamp and LED driving: The ULQ2003ATDQ1 can be employed to drive high-power lamps and LED arrays.
4. Power supply control: It can be utilized in power supply circuits for controlling high-current loads.

Detailed and Complete Alternative Models

• ULN2003A: Similar to the ULQ2003ATDQ1, but without the built-in flyback diodes.
• ULN2803A: A higher current version of the ULQ2003ATDQ1, capable of handling currents up to 1.5A per channel.
• ULN2064B: A quad Darlington transistor array with similar characteristics to the ULQ2003ATDQ1.

(Note: The above alternative models are just a few examples; there are several other alternatives available in the market.)

In conclusion, the ULQ2003ATDQ1 is a versatile integrated circuit that offers efficient control of high-voltage and high-current loads. Its compact size, low saturation voltage, and built-in flyback diodes make it an ideal choice for various applications in motor control, relay/solenoid control, lamp/LED driving, and power supply control.