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.
|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)|
|Dimensions||4 × 2 × 1 cm|