ULN2003 Stepper Motor Driver IC


  • 500-mA-Rated Collector Current (Single Output)
  • High-Voltage Outputs: 50 V
  • Output Clamp Diodes
  • Inputs Compatible With Various Types of Logic
  • Relay-Driver Applications
GTIN: 8900000013999 SKU: ol-p-0000191 Category:


ULN2003 Stepper Motor Driver IC

ULN2003 IC is one of the most commonly used Motor driver IC. This IC comes in handy 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. 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.

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
  • Available in 16-pin DIP, TSSOP, SOIC packages

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