ULN2003ADG4 – TEXAS INSTRUMENTS

The ULN2003ADG4 is a high-voltage, high-current Darlington transistor array, providing an effective interface between low-power digital circuits and high-current loads. This device contains seven Darlington pairs with open-collector outputs capable of sinking up to 500 mA per channel. It is specifically designed for driving inductive loads such as relays, solenoids, stepper motors, and LED arrays. With integrated flyback diodes, the ULN2003ADG4 protects against voltage transients generated by inductive loads, ensuring reliable long-term operation. Its versatile design and compact DIP or surface-mount packaging make it ideal for both prototyping and high-volume production. The device is widely used in industrial control, automotive, and consumer electronic applications where robust load driving is critical. Engineers value this component for its simplicity, reliability, and ability to interface digital logic with high-power devices, effectively reducing the need for additional driver circuits and simplifying overall system design.