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ULN2802A Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
ULN2802AALLEGRO133Yes

ULN2802A is a high-voltage, high-current Darlington transistor array manufactured by STMicroelectronics (STM).

The ULN2802A is a high-voltage, high-current Darlington transistor array manufactured by STMicroelectronics (STM).

Specifications:

  • Configuration: 8-channel Darlington transistor array
  • Output Voltage: 50V (max)
  • Output Current: 500mA per channel (600mA peak)
  • Input Voltage: 5V TTL/CMOS compatible
  • Input Current: 2.5mA (max)
  • Power Dissipation: 2.25W (total package)
  • Package: 18-pin DIP, SOIC

Descriptions:

  • Contains eight NPN Darlington pairs with common emitters and integral suppression diodes for inductive loads.
  • Designed for interfacing between low-level logic and high-power loads.
  • Suitable for driving relays, lamps, solenoids, and stepper motors.

Features:

  • High-Voltage Outputs: Up to 50V
  • High-Current Drivers: 500mA per channel
  • Integrated Clamp Diodes: For inductive load protection
  • TTL/CMOS Compatible Inputs: 5V logic control
  • Wide Operating Temperature Range: -20°C to +85°C

This device is commonly used in industrial and automotive applications requiring robust switching capabilities.

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