1 Features

• Qualified for automotive applications

• ESD protection exceeds 200V using machine

model (C = 200pF, R = 0)

• 500mA-rated collector current (single output)

• High-voltage outputs: 50V

• Output clamp diodes

• Inputs compatible with various types of logic

• Relay-driver applications

2 Applications

• Relay drivers

• Stepper and DC brushed motor drivers

• Lamp drivers

• Display drivers (LED and gas discharge)

• Line drivers

• Logic buffers

3 Description

The ULQ200xA-Q1 devices are high-voltage highcurrent

Darlington transistor arrays. Each consists

of seven npn Darlington pairs that feature highvoltage

outputs with common-cathode clamp diodes

for switching inductive loads. The collector-current

rating of a single Darlington pair is 500mA. The

Darlington pairs can be paralleled for higher current

capability.

The ULQ2003A-Q1 has a 2.7kΩ series base resistor

for each Darlington pair, for operation directly with

TTL or 5V CMOS devices. The ULQ2004A-Q1 has a

10.5kΩ series base resistor to allow operation directly

from CMOS devices that use supply voltages of 6V to

15V. The required input current of the ULQ2004A-Q1

is below that of the ULQ2003A-Q1.