The ULN2003 Darlington Array IC is a high-voltage, high-current 7-channel NPN Darlington transistor array designed to interface low-level logic microcontrollers directly with high-power peripheral… 500 mA per channel.
The ULN2003 Darlington Array IC is a high-voltage, high-current 7-channel NPN Darlington transistor array designed to interface low-level logic microcontrollers directly with high-power peripheral loads. Each channel can sink up to 500mA of continuous output current and withstand voltages up to 50V DC, with capability for parallel channel operation to handle higher current loads.
Housed in a 16-pin DIP package, the ULN2003 includes integrated inductive suppression (freewheeling) clamp diodes on each output collector, making it directly suitable for driving inductive loads such as relays, solenoids, small DC motors, and 28BYJ-48 unipolar stepper motors without requiring additional external flyback diodes.
It is compatible with 5V TTL and CMOS logic inputs from Arduino, ESP32, Raspberry Pi, PIC, AVR, robotics driver shields, and general embedded DIY electronic systems.
| Type | 7-Channel NPN Darlington Transistor Array |
|---|---|
| Model | ULN2003 (ULN2003A) |
| Package Type | 16-Pin DIP (Through-Hole) |
| Peak Output Current | 500 mA per channel |
| Input Compatibility | 5V TTL / CMOS logic |
| Built-in Suppression Diodes | Flyback diodes included for inductive loads |
What is the operating voltage?
5V TTL / CMOS logic.
Is it compatible with Arduino and ESP32?
Yes. It works with Arduino, ESP32, Raspberry Pi projects.
Can I buy the ULN2003 Darlington Array IC in Kanpur?
Yes – buy online with delivery across India, or pick it up from the iTechBuilders store, Damodar Nagar, Kanpur.
