Texas Instruments
Kuva saattaa olla esitys.
Katso tuotteen tekniset tiedot.
ULN2003AIDRG4
Näytä Yksityiskohdat DataSheets

ULN2003AIDRG4

Product Overview

Category: Integrated Circuit
Use: High-voltage, high-current Darlington transistor array
Characteristics: 7 channels, common-cathode clamp diodes, output current 500 mA per channel, input voltage 2.7V to 5.5V
Package: SOIC-16
Essence: The ULN2003AIDRG4 is a versatile and reliable integrated circuit used for driving high-power loads such as relays, motors, and lamps.
Packaging/Quantity: Tape and Reel (2500 units)

Specifications

  • Number of Channels: 7
  • Output Current: 500 mA per channel
  • Input Voltage: 2.7V to 5.5V
  • Package Type: SOIC-16

Detailed Pin Configuration

  1. Input 1 (IN1)
  2. Output 1 (OUT1)
  3. Common (COM)
  4. Output 2 (OUT2)
  5. Input 2 (IN2)
  6. Output 3 (OUT3)
  7. Input 3 (IN3)
  8. Output 4 (OUT4)
  9. Input 4 (IN4)
  10. Output 5 (OUT5)
  11. Input 5 (IN5)
  12. Output 6 (OUT6)
  13. Input 6 (IN6)
  14. Output 7 (OUT7)
  15. Input 7 (IN7)
  16. GND

Functional Features

  • High-Voltage and High-Current Capability
  • Common-Cathode Clamp Diodes for Inductive Load Protection
  • Wide Input Voltage Range
  • Thermal Shutdown Protection

Advantages

  • Robust and Reliable Performance
  • Suitable for Driving a Variety of High-Power Loads
  • Built-in Diodes for Inductive Load Suppression

Disadvantages

  • Limited to 500 mA per Channel
  • Requires External Freewheeling Diodes for Inductive Loads

Working Principles

The ULN2003AIDRG4 consists of seven NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for inductive load protection. When an input signal is applied, the corresponding output drives the connected load. The built-in diodes provide a path for the back EMF generated by inductive loads, protecting the IC and other components.

Detailed Application Field Plans

  • Industrial Automation: Control of solenoids, valves, and actuators
  • Automotive: Driving automotive relays and motors
  • Home Appliances: Control of household appliances such as fans and pumps
  • Robotics: Motor control in robotic applications

Detailed and Complete Alternative Models

  • ULN2003APG: Similar specifications and pin configuration
  • ULN2003ADR2G: Improved thermal performance and higher input voltage range

This comprehensive integrated circuit provides a reliable solution for driving high-power loads across various industries, offering robust performance and protection features.

Word count: 410

Luettele 10 yleistä kysymystä ja vastausta, jotka liittyvät ULN2003AIDRG4 :n soveltamiseen teknisissä ratkaisuissa

  1. What is ULN2003AIDRG4?

    • ULN2003AIDRG4 is a high-voltage, high-current Darlington transistor array commonly used for interfacing between low-level logic and high-power loads in applications such as relay drivers, stepper motor drivers, and LED displays.

  2. What is the maximum voltage and current rating of ULN2003AIDRG4?

    • The ULN2003AIDRG4 has a maximum voltage rating of 50V and a maximum continuous output current of 500mA per channel.

  3. How many channels does ULN2003AIDRG4 have?

    • ULN2003AIDRG4 consists of seven channels, each containing a Darlington pair of transistors.

  4. What are the typical applications of ULN2003AIDRG4?

    • Typical applications include driving relays, lamps, LED displays, stepper motors, and other high-power peripheral devices from low-power microcontroller or logic outputs.

  5. What is the input compatibility of ULN2003AIDRG4?

    • ULN2003AIDRG4 is compatible with TTL, DTL, PMOS, CMOS, and other low-power logic families.

  6. How can ULN2003AIDRG4 be used to drive a stepper motor?

    • ULN2003AIDRG4 can be used to drive a unipolar or bipolar stepper motor by providing the necessary current amplification and protection diodes for the motor windings.

  7. What are the key features of ULN2003AIDRG4?

    • Some key features include high-voltage and high-current capability, built-in clamp diodes for inductive loads, and common-cathode clamp diodes for switching inductive loads.

  8. What are the thermal considerations for using ULN2003AIDRG4?

    • It is important to consider proper heat sinking and thermal management when driving high currents through ULN2003AIDRG4 to ensure reliable operation and prevent overheating.

  9. Can ULN2003AIDRG4 be used for PWM (Pulse Width Modulation) applications?

    • Yes, ULN2003AIDRG4 can be used for PWM applications to control the speed of motors or the brightness of LEDs by modulating the input signal.

  10. Are there any common failure modes or issues associated with ULN2003AIDRG4?

    • Common issues include thermal runaway at high currents, overvoltage spikes damaging the device, and improper handling of inductive loads leading to voltage spikes. Proper design and protection measures should be implemented to mitigate these risks.