ULN2803 SOIC-18 Darlington Transistor Array IC (ULN2803)

The ULN2803 is a high voltage and high current Darlington transistor array IC designed for driving relays, stepper motors, lamps, solenoids, and other inductive loads from TTL or CMOS logic circuits. It integrates eight Darlington transistor pairs with common emitter outputs in a compact SOIC-18 package.

Key Features -

• Eight channel Darlington transistor array IC
• High current sink driver outputs
• TTL and CMOS logic compatible inputs
• SOIC-18 surface mount package
• Integrated flyback diode protection

Specifications -

• IC type / Product type - Darlington Transistor Array IC
• Logic family / Component type - Driver Interface IC
• Package type - SOIC-18 SMD IC
• Supply voltage - Supports external load voltages up to approx 50V
• Input voltage - TTL and CMOS compatible logic input levels
• Output voltage - Open collector driver outputs
• Current rating - Approx 500mA output current per channel
• Frequency / propagation delay - Suitable for switching and driver applications
• Operating temperature - Approx -40°C to +85°C
• Additional important specifications - Eight Darlington driver channels, integrated suppression diodes, high voltage output capability, inductive load driving support, low input current requirement

Applications -

• Relay driver circuits
• Stepper motor control systems
• Solenoid and actuator drivers
• LED and lamp driver applications
• Industrial automation equipment

Pinout Configuration -

• Pin 1 - Driver input pin
• Pin 2 - Driver input pin
• Pin 3 - Driver input pin
• Additional pins - Driver output pins, common diode connection pin, power and ground connections