ULN2803AG Darlington Transistor Array IC SOP-18

The ULN2803AG is an 8-channel Darlington transistor array IC designed for driving relays, LEDs, solenoids, stepper motors, and other high-current loads from TTL and CMOS logic circuits. Housed in a compact SOP-18 surface-mount package, it integrates eight NPN Darlington pairs with common-emitter outputs and built-in flyback diodes for inductive load protection. The ULN2803AG is widely used in microcontroller-based systems, industrial automation, embedded electronics, and control applications.

Features

• Eight NPN Darlington transistor driver channels.
• High-voltage outputs up to 50V.
• 500mA continuous collector current per channel.
• Integrated suppression diodes for inductive loads.
• TTL and 5V CMOS logic compatible inputs.
• High current gain for efficient load driving.
• Low standby power consumption.
• SOP-18 surface-mount package.
• Suitable for automated SMT assembly.
• RoHS compliant.

Applications

• Relay driver circuits.
• Stepper motor and DC motor drivers.
• LED matrix and display drivers.
• Solenoid and valve control.
• Microcontroller output expansion.
• Industrial automation systems.
• PLC and embedded control circuits.
• Printer and office automation equipment.
• Home automation devices.
• General-purpose high-current switching.

Specification