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ULN2003 Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
ULN2003ST105Yes

ULN2003 is a high-voltage, high-current Darlington transistor array manufactured by various companies, including Texas Instruments, STMicroelectronics, and ON Semiconductor.

The ULN2003 is a high-voltage, high-current Darlington transistor array manufactured by various companies, including Texas Instruments, STMicroelectronics, and ON Semiconductor.

Specifications:

  • Configuration: 7-channel Darlington array (7 NPN Darlington pairs)
  • Output Current per Channel: 500 mA (max)
  • Output Voltage (Collector-Emitter): 50 V (max)
  • Input Voltage (Base-Emitter): 30 V (max)
  • Input Compatibility: TTL, CMOS, PMOS (5V logic compatible)
  • Power Dissipation: 1 W per driver (approx.)
  • Package Options: DIP-16, SOIC-16

Descriptions:

  • The ULN2003 is designed for driving high-current loads such as relays, solenoids, stepper motors, and lamps.
  • Each channel includes a freewheeling diode for inductive load protection.
  • It is commonly used in microcontroller interfacing applications.

Features:

  • Built-in Suppression Diodes: For inductive load protection.
  • High-Voltage Outputs: Up to 50V.
  • High-Current Drive Capability: 500 mA per channel.
  • Wide Input Voltage Compatibility: Works with 5V logic levels.
  • Cascadable: Multiple ULN2003 ICs can be used in parallel for higher current handling.

The ULN2003 is widely used in industrial control, automotive, and consumer electronics applications due to its robustness and ease of integration.

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