DESCRIPTION

The ULN2803 is high-voltage, high-current darlington driver IC

composed of 8 NPN darlington pairs. All units share the emitter in

common, and each unit adopts open-collector output. A 2.7KΩ resistor is

connected to each darlington pair in serial, which is compatible with TTL

and 5V CMOS for data processing without logic buffer.

Sink current of ULN2803 is up to 500mA, when it is off state, the

withstand voltage is 50V and the output can runs with high load current,

which provides solutions for various interface.

FEATURES

Wide operating voltage range

8-ch high-gain darlington array

High output voltage (up to 50V)

High output current (up to 500mA)

Able to connect to TTL, CMOS, PMOS directly

Clamp diodes for switching inductive loads

APPLICATIONS

Relay driver

DC lamp driver

Step motor driver

Magnet valve

DC brushless motor driver