ULN2803 DARLINGTON TRANSISTOR ARRAY

The ULN2003 is a popular 7-channel Darlington transistor array IC, ideal for driving high-power loads with microcontrollers or low-power circuits. This IC features seven pairs of Darlington transistors, allowing it to handle up to 500mA per channel, making it perfect for controlling relays, motors, and other devices requiring higher currents.

Key Features of ULN2003 7 Darlington Transistor Array IC DIP-16:

• • High Current Capacity: Each channel can sink up to 500mA, ideal for driving larger loads.
  • 7 Darlington Transistor Pairs: Seven separate channels provide versatile control for multiple outputs.
  • Built-in Clamp Diodes: Protects against inductive load back EMF, making it suitable for relays and motors.
  • Compact DIP-16 Package: Easy to integrate into standard breadboards and PCB designs.

Technical Specifications of ULN2003 7 Darlington Transistor Array IC DIP-16:

• • Output Current: Up to 500mA per channel
  • Output Voltage: Maximum 50V
  • Input Voltage: Compatible with 5V and 3.3V logic systems
  • Power Dissipation: Maximum 2.25W (with adequate heat dissipation)
  • Operating Temperature: -40°C to +85°C

Schematic Diagram, Connection, Wiring, and Pinout of ULN2003 7 Darlington Transistor Array IC DIP-16:

• Schematic Diagram: Shows input pins connected to microcontroller outputs, output pins to load, and common pin to power source for inductive loads.
• Connection: Connect each input pin to a microcontroller or logic circuit; connect each output to the load (e.g., relay, motor); connect the common pin to the load’s power supply (for inductive loads).
• Pinout:
  • Pins 1-7 (IN1-IN7): Input channels for controlling outputs
  • Pins 10-16 (OUT1-OUT7): Output channels to drive loads
  • Pin 9 (COM): Connects to the power supply for the inductive load clamp diodes
  • Pin 8 (GND): Ground connection

Applications of ULN2003 7 Darlington Transistor Array IC DIP-16:

• • Relay Driver: Suitable for driving multiple relays in automation or control applications.
  • Stepper Motor Control: Can control stepper motors by driving motor phases sequentially.
  • LED Display Control: Ideal for controlling high-power LED arrays in displays or indicators.
  • Home Automation: Commonly used in home automation systems for controlling lights, fans, and appliances.

Equivalent Models of ULN2003 7 Darlington Transistor Array IC DIP-16:

• • ULN2803: Similar IC with 8 channels, suitable for larger arrays of loads.
  • ULN2004: An alternative with similar functionality, compatible with higher input voltages.

Keywords for ULN2003 7 Darlington Transistor Array IC DIP-16:

• • Darlington Transistor Array
  • Relay Driver IC
  • Motor Driver
  • ULN2003 IC
  • Power Amplifier IC

Package Includes:

• • 1 x ULN2003 7 Darlington Transistor Array IC DIP-16