ULN2803ADWR Description

The ULN2803A is a Darlington transistor array with a high voltage and current. The ULN2803ADWR is made up of eight NPN Darlington pairs with high-voltage outputs and common-cathode clamp diodes for inductive load switching. Each Darlington pair has a collector-current rating of 500 mA. For larger current capability, the Darlington pairs can be connected in parallel.

Relay drivers, hammer drivers, light drivers, display drivers (LED and gas discharge), line drivers, and logic buffers are examples of applications. Each Darlington pair in the ULN2803A device contains a 2.7-k series base resistor enabling direct operation with TTL or 5-V CMOS circuits.

ULN2803ADWR Features

500-mA-Rated Collector Current

High-Voltage Outputs: 50 V

Output Clamp Diodes

Relay-Driver Applications 

Compatible with ULN2800A Series

ULN2803ADWR Applications

Relay Drivers 

Hammer Drivers

Lamp Drivers

Display Drivers (LED and Gas Discharge)

Line Drivers

Logic Buffers