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ULN2003A The ULN2003A from STMicroelectronics is a 7-channel NPN Darlington array driver IC designed for high-current applications. It offers a 500mA sink current per channel and a 50V output voltage.
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ULN2003A

Available from 9 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The ULN2003A from STMicroelectronics is a 7-channel NPN Darlington array driver IC designed for high-current applications. It offers a 500mA sink current per channel and a 50V output voltage.
✓ Total Stock: 383,001 pcs
$ Price Range: $0.32

ULN2003A Available from 9 distributors

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Fe Components ✓
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367,612 pcs
On Request
367612 pcs On Request 1 On Request On Request On Request On Request On Request
Components Technology Group, Inc. ✓
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15,007 pcs
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15007 pcs On Request 1 On Request On Request On Request On Request On Request
Speed Components Ltd ✓
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200 pcs
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Hybrid Electronics ✓
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90 pcs
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90 pcs On Request 1 On Request On Request 94 On Request On Request
Tomark Electronics Ltd ✓
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34 pcs
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34 pcs On Request 1 On Request On Request On Request On Request On Request
Chanetech ✓
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25 pcs
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25 pcs On Request 1 On Request On Request On Request On Request On Request
Partservice ✓
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23 pcs
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23 pcs On Request 1 On Request On Request On Request On Request On Request
MW.FEP S.p.A. ✓
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10 pcs
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10 pcs On Request 1 On Request On Request On Request On Request On Request
Braun Electronic Components ✓
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On Request
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ULN2003A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
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Current
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Input Type
Input Voltage
Interface
Lead Spacing
Lead Style
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Current
Output Type
Output Voltage
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ULN2003A Description

Short technical summary and product information.

The ULN2003A is a high-voltage, high-current Darlington driver IC from STMicroelectronics, featuring 7 NPN Darlington pairs. Each pair has a 2.7KΩ resistor for TTL and 5V CMOS compatibility, eliminating the need for logic buffers.

 

This IC is capable of sinking up to 500mA per channel with a withstand voltage of 50V, making it suitable for driving high-load currents. It operates over a wide voltage range and is designed for direct connection to TTL, CMOS, and PMOS logic. The device includes clamp diodes for switching inductive loads.

 

Key electrical characteristics include a typical output voltage of 50V and a typical output current of 500mA. The typical collector-emitter saturation voltage is 1.6V at 350mA input current. It operates within a temperature range of -40°C to 85°C.

 

The ULN2003A is available in a 16-pin DIP package and is suitable for applications such as relay drivers, clamp drivers, stepper motor drivers, and solenoid drivers.

ULN2003A Quick Information

Product Type: Darlington Array Driver IC
Canonical Name: ULN2003A Darlington Array Driver IC
Subcategory: Power Distribution Switches, Load Drivers

ULN2003A Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

ULN2003A Estimated Pricing

Qty Low High
1+ $0.32 $0.32

Estimated market price range - modelled values for guidance only, not live distributor offers.

ULN2003A Features

  • 7-channel NPN Darlington array driver.
  • High output current up to 500mA.
  • High output voltage up to 50V.
  • Compatible with TTL and CMOS logic.
  • Includes clamp diodes for inductive loads.

ULN2003A Applications

  • Ideal for relay driver applications.
  • Suitable for solenoid driver circuits.
  • Used in stepper motor control.
  • Applicable for DC brushless motor driving.
  • Effective for clamp driver circuits.

ULN2003A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating temperature range of the ULN2003A?

-40°C to 85°C.

What packages are available for the ULN2003A?

16-DIP and SOP-16.

What is the input voltage range for the ULN2003A?

-0.5V to 30V.

What is the output voltage range for the ULN2003A?

-0.5V to 50V.

What is the maximum output current per channel?

500mA.

How many outputs does the ULN2003A have?

7 outputs.

What is the output configuration of the ULN2003A?

Low-side NPN open-collector outputs.

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