ULN2803 Stepper Motor/Relay Driver Board

This is a high voltage, high current driver board made using the IC ULN2803, which consists of 8 NPN Darlington Transistor Array with Common Cathode clamp diodes for switching Inductive Loads. Each Darlington pairs can drive currents up to 500mA and they may be connected in parallel for higher current capability.

ULN2803 of this driver board has a 2.7KΩ series base resistor for each Darlington Pair which enables its operation directly with TTL or 5V CMOS devices.

Specifications

• Per channel current: 500mA.
• High Voltage Outputs up to 50V.
• Output Clamp Diodes.
• Inputs compatible with various Logic Voltages.
• On-board Power Supply Filtering Capacitors
• On-board LED Power Indicator
• On-board LED Output Indicators
• PCB Size(LxWxH in mm):59.6×1.5×56.5mm
• Weight: 20g.

Applications

• Stepper Motor Driver.
• Relay Driver.
• LED Driver.
• Hammer Driver.
• Lamp Driver.
• LED and Gas Discharge Display Driver.
• Line Drivers.
• Logic Buffer.