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ULN2003A The Allegro Microsystems ULN2003A is a 7-channel high-voltage, high-current Darlington array driver IC. It offers an output voltage up to 50V and sink current up to 500mA per channel.
Mfr Part #:

ULN2003A

Available from 2 distributors
Mfr Name: Allegro Microsystems
Allegro Microsystems
The Allegro Microsystems ULN2003A is a 7-channel high-voltage, high-current Darlington array driver IC. It offers an output voltage up to 50V and sink current up to 500mA per channel.
✓ Total Stock: 105 pcs
$ Price Range: $0.99

ULN2003A Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Speed Components Ltd ✓
Non-Authorised Inventory information
100 pcs
On Request
100 pcs On Request 1 On Request On Request On Request On Request On Request
Partservice ✓
Non-Authorised Inventory information
5 pcs
On Request
5 pcs On Request 1 On Request On Request On Request On Request On Request
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ULN2003A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Channels
Halogen Free
Input Capacitance
Input Voltage
Mounting Type
Operating Temperature
Output Current
Output Voltage
Storage Temperature
Tape & Reel
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ULN2003A Description

Short technical summary and product information.

The ULN2003A from Allegro Microsystems is a versatile Darlington array driver IC designed for high-voltage and high-current applications. It comprises seven NPN Darlington pairs, each featuring an open-collector output and an integrated 2.7KΩ series resistor for TTL and 5V CMOS compatibility.

 

This device supports a wide operating voltage range, with an output voltage capability of up to 50V and a maximum sink current of 500mA per channel. The integrated clamp diodes are beneficial for switching inductive loads, making it suitable for various interface applications.

 

The ULN2003A is available in a SOP-16 surface mount package, facilitating integration into compact electronic designs. Its operating temperature range is -40°C to 85°C, ensuring reliable performance in diverse environmental conditions. The device is also Halogen Free.

 

Key applications include relay drivers, clamp drivers, stepper motor drivers, and DC brushless motor drivers. Its compatibility with logic-level inputs allows direct interfacing with microcontrollers and other digital circuits.

ULN2003A Quick Information

Product Type: Darlington Array Driver IC
Series: ULN2003
Canonical Name: ULN2003A Darlington Array Driver IC
Subcategory: BJT Arrays

ULN2003A Compliance

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

ULN2003A Estimated Pricing

Qty Low High
1+ $0.99 $0.99

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

ULN2003A Features

  • Seven NPN Darlington driver pairs.
  • Up to 50V output voltage.
  • Up to 500mA sink current per channel.
  • TTL and 5V CMOS compatible inputs.
  • Integrated clamp diodes for inductive loads.

ULN2003A Applications

  • Ideal for relay driver applications.
  • Suitable for stepper motor control.
  • Used in DC brushless motor drivers.
  • Effective for solenoid and magnet valve driving.
  • Provides interface for various loads.

ULN2003A FAQs

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

Input voltage range is -0.5 to 30 V and output voltage range is -0.5 to 50 V.

What package does the ULN2003A come in?

The ULN2003A is available in a SOP-16 surface-mount package.

What is the operating temperature range?

-40 to 85 °C.

What is the maximum output current per channel?

500 mA sink current.

Does the ULN2003A have integrated clamp diodes?

Yes, each channel includes a clamp diode with typical forward voltage of 2.0 V at 350 mA.

What are the typical switching delays?

1.0 µs for turn-on and 1.0 µs for turn-off.

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