ULQ2003ATDG4Q1

Product Overview

• Category: Integrated Circuit
• Use: Power Driver for Relays, Lamps, and Solenoids
• Characteristics: High-Voltage, High-Current Darlington Transistor Array
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Efficiently drives inductive loads with high voltage and current requirements
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Number of Channels: 7
• Output Voltage: 50V
• Output Current: 500mA
• Input Voltage: 5V to 15V
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The ULQ2003ATDG4Q1 has a total of 16 pins. The pin configuration is as follows:

1. Output 1
2. Common (COM)
3. Output 2
4. Output 3
5. Output 4
6. Output 5
7. Output 6
8. Output 7
9. GND (Ground)
10. Input 1
11. Input 2
12. Input 3
13. Input 4
14. Input 5
15. Input 6
16. VCC (Supply Voltage)

Functional Features

• High-Voltage and High-Current Capability: The ULQ2003ATDG4Q1 can handle up to 50V output voltage and 500mA output current, making it suitable for driving relays, lamps, and solenoids.
• Darlington Transistor Array: The integrated Darlington transistor array provides efficient switching and amplification of signals, ensuring reliable operation of inductive loads.
• Built-in Clamp Diodes: The device includes built-in clamp diodes to protect the driving circuitry from voltage spikes generated by inductive loads.

Advantages and Disadvantages

Advantages: - High-Voltage and High-Current Capability - Integrated Darlington Transistor Array - Built-in Clamp Diodes for Protection

Disadvantages: - Limited number of channels (7)

Working Principles

The ULQ2003ATDG4Q1 is designed based on the Darlington transistor configuration. It consists of seven Darlington pairs, each capable of amplifying and switching high currents. When an input signal is applied to one of the input pins, the corresponding output pin will turn on, allowing current to flow through the connected load. The built-in clamp diodes protect the driving circuitry by providing a path for the back-emf generated by inductive loads.

Detailed Application Field Plans

The ULQ2003ATDG4Q1 is commonly used in various applications that require driving inductive loads, such as:

1. Automotive Systems: Used to control relays, lamps, and solenoids in automotive lighting systems, power windows, and door locks.
2. Industrial Automation: Employed in motor control circuits, robotic systems, and industrial machinery to drive solenoids and actuators.
3. Home Appliances: Utilized in appliances like washing machines, refrigerators, and air conditioners to control motors and valves.

Detailed and Complete Alternative Models

1. ULN2003A: Similar to ULQ2003ATDG4Q1 but with 16-pin DIP package instead of SOIC.
2. ULN2803A: Higher channel count (8 channels) with similar specifications and features.
3. ULN2064B: Lower voltage capability (30V) but higher current rating (600mA).

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