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ULN2004ADE4
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ULN2004ADE4

Product Overview

Category

The ULN2004ADE4 belongs to the category of high-voltage, high-current Darlington transistor arrays.

Use

It is commonly used as a driver for relays, lamps, solenoids, and other high-power peripheral devices in industrial and automotive applications.

Characteristics

  • High-voltage and high-current capability
  • Integrated suppression diodes for inductive loads
  • TTL, CMOS, and PMOS compatible inputs

Package

The ULN2004ADE4 is available in a 16-pin SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of ULN2004ADE4 lies in its ability to control high-power devices with minimal external components.

Packaging/Quantity

It is typically packaged in reels of 2500 units.

Specifications

  • Maximum Output Voltage: 50V
  • Continuous Collector Current: 500mA
  • Input Voltage: 5V to 15V
  • Operating Temperature Range: -40°C to 105°C

Detailed Pin Configuration

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

Functional Features

  • High-Voltage and High-Current Outputs
  • Built-in Suppression Diodes
  • Compatible with Various Logic Levels
  • Thermal Shutdown Protection

Advantages

  • Simplifies driving high-power loads
  • Reduced component count in circuit design
  • Wide operating temperature range

Disadvantages

  • Limited maximum output voltage
  • Relatively low continuous collector current compared to some alternatives

Working Principles

The ULN2004ADE4 consists of seven NPN Darlington pairs that amplify the input signal to control the high-power outputs. The built-in suppression diodes protect the array from voltage spikes generated by inductive loads.

Detailed Application Field Plans

The ULN2004ADE4 finds extensive use in industrial automation, automotive systems, and robotics. It is employed in relay drivers, stepper motor drivers, and lamp drivers due to its high-power handling capabilities.

Detailed and Complete Alternative Models

Some alternative models to ULN2004ADE4 include: - ULN2803A - TPIC6B595 - L293D - A2982SLW

In conclusion, the ULN2004ADE4 serves as a reliable and efficient solution for driving high-power peripherals in various electronic systems, making it an essential component in industrial and automotive applications.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací ULN2004ADE4 v technických řešeních

  1. What is ULN2004ADE4?

    • ULN2004ADE4 is a high-voltage, high-current Darlington transistor array commonly used for driving inductive loads such as relays, solenoids, and stepper motors.

  2. What is the maximum voltage and current rating of ULN2004ADE4?

    • The ULN2004ADE4 can handle a maximum voltage of 50V and a continuous output current of 500mA per channel.

  3. How many channels does ULN2004ADE4 have?

    • ULN2004ADE4 has 7 channels, each consisting of a Darlington pair.

  4. What are the typical applications of ULN2004ADE4?

    • Typical applications include driving various types of inductive loads, such as relays, stepper motors, and solenoids, in automotive, industrial, and consumer electronics.

  5. What is the input compatibility of ULN2004ADE4?

    • The ULN2004ADE4 is compatible with TTL, CMOS, and PMOS logic levels.

  6. Does ULN2004ADE4 require external freewheeling diodes?

    • Yes, it is recommended to use external freewheeling diodes when driving inductive loads to protect the transistors from voltage spikes.

  7. Can ULN2004ADE4 be used for PWM (Pulse Width Modulation) control?

    • Yes, ULN2004ADE4 can be used for PWM control by rapidly switching the input signal to achieve variable output power.

  8. What is the thermal resistance of ULN2004ADE4?

    • The thermal resistance of ULN2004ADE4 is typically 100°C/W, which determines its ability to dissipate heat.

  9. Is ULN2004ADE4 suitable for high-temperature environments?

    • Yes, ULN2004ADE4 is designed to operate in high-temperature environments, making it suitable for automotive and industrial applications.

  10. Are there any specific layout considerations for using ULN2004ADE4?

    • It is important to minimize the length of the traces between ULN2004ADE4 and the load to reduce the risk of electromagnetic interference. Additionally, proper grounding and decoupling capacitors should be employed for stable operation.