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HomeShopMotors & DrivesMotors Drives ULN2003 Seven Darlington Array DIP-16
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LM324 Quadruple Operational Amplifier DIP-14 11.64 EGP Original price was: 11.64 EGP.10.00 EGPCurrent price is: 10.00 EGP.
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Stepper Motor Driver Board ULN2003
Stepper Motor Driver Board ULN2003 41.80 EGP Original price was: 41.80 EGP.35.00 EGPCurrent price is: 35.00 EGP.

ULN2003 Seven Darlington Array DIP-16

10.89 EGP Original price was: 10.89 EGP.9.00 EGPCurrent price is: 9.00 EGP.

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Description

ULN2003 Seven Darlington Array DIP-16 is a high-quality electronic component designed for Arduino, prototyping, and educational electronics. ULN2003 Seven Darlington Array
ULN2003 IC is one of the most commonly used Motor driver IC generally used when we need to drive high current loads using digital logic circuits like Op-maps, Timers, Gates, Arduino, PIC, ARM etc. For example a motor that requires 9V and 300mA to run cannot be powered by an Arduino I/O hence we use this IC to source enough current and voltage for the load.

ULN2003 Pinout Configuration

Pin Number
Pin Name
Description

1 to 7
Input 1 to Input 7
Seven Input pins of Darlington pair, each pin is connected to the base of the transistor and can be triggered by using +5V

8
Ground
Ground Reference Voltage 0V

9
COM
Used as test pin or Voltage suppresser pin (optional to use)

10 to 16
Output 1 to Output 7
Respective outputs of seven input pins. Each output pin will be connected to ground only when its respective input pin is high(+5V)

ULN2003 Features

Contains 7 high-voltage and high current Darlington pairs
Each pair is rated for 50V and 500mA
Input pins can be triggered by +5V
All seven Output pins can be connected to gather to drive loads up to (7×500mA) ~3.5A.
Can be directly controlled by logic devices like Digital Gates, Arduino, PIC etc
16-pin DIP

Note: Complete Technical Details can be found at the ULN2003 datasheet given at the end of this page.
Where to use a ULN2003
This IC is commonly used to drive Relay modules, Motors, high current LEDs and even Stepper Motors. So if you have anything that anything more than 5V 80mA to work, then this IC would be the right choice for you.
How to use a ULN2003 IC
The ULN2003 is a 16-pin IC. It has seven Darlington Pairs inside, where each can drive loads up to 50V and 500mA. For these seven Darlington Pairs we have seven Input and Output Pins. Adding to that we can a ground and Common pin. The ground pin, as usual is grounded and the usage of Common pin is optional. It might be surprising to note that this IC does not have any Vcc (power) pin; this is because the power required for the transistors to work will be drawn from the input pin itself. The below circuit is a simple circuit that can be used to test the working of ULN2003 IC .

In the circuit consider the LED to be the loads and the logic pins (blue colour) as the pins connected to the Digital circuit or Microcontroller like Arduino. Notice that the Positive pin of the LED is connected to the positive load voltage and the negative pin is connected to the output pin of the IC. This is because when the input pin of the IC gets high the respective output pin will get connected to ground. So when the negative terminal of the LED is grounded it completes the circuit and thus glows. The loads connected to the output pin can be maximum of 50C and 500mA each. However you can run higher current loads buy combining two or more output pins to gather. For example if you combine three pins you can drive up to (3*500mA) ~1.5A.

The COM pin is connected to ground through a switch, this connection is optional. It can be used a test switch, meaning when this pin is grounded all the output pins will be grounded.
Applications

Used to drive high current loads using Digital Circuits
Can be used to drive Stepper motors
High current LED’s can be driven
Relay Driver module (can drive 7 relays)
Logic Buffers in digital electronics
Used as Touch sensor for Arduino

Component Datasheet
ULN2003 Datasheet It’s perfect for DIY makers, students, and anyone building custom electronic circuits or STEM kits.

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Categories: Motors & Drives, Motors Drives
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