ST ULQ2803, ULQ2804 User Manual
Features
■ Eight Darlingtons per package
■ Extended temperature range: -40 to 105 °C
■ Output current to 500 mA
■ Output voltage to 50 V
■ Integral suppression diodes
■ Versions for all popular logic families
■ Output can be paralleled
■ Inputs pinned opposite outputs to simplify
board layout
Description
The ULQ2801A-ULQ2804A each contain eight
Darlington transistors with common emitters and
integral suppression diodes for inductive loads.
Each Darlington features a peak load current
rating of 600 mA (500 mA continuous) and can
withstand at least 50 V in the off state. Outputs
may be paralleled for higher current capability.
Five versions are available to simplify interfacing
to standard logic families: the ULQ2801A is
ULQ2801 - ULQ2802
ULQ2803 - ULQ2804
Eight Darlington array
DIP-18
designed for general purpose applications with a
current limit resistor; the ULQ2802A has a 10.5
kΩ input resistor and zener for 14-25V PMOS; the
ULQ2803A has a 2.7 kΩ input resistor for 5 V TTL
and CMOS; the ULQ2804A has a 10.5 kΩ input
resistor for 6-15 V CMOS.
All types are supplied in a 18-lead plastic DIP with
a copper lead from and feature the convenient
input-opposite-output pinout to simplify board
layout.
Table 1. Device summary
Order codes Package
ULQ2801A DIP-18
ULQ2802A DIP-18
ULQ2803A DIP-18
ULQ2804A DIP-18
June 2008 Rev 2 1/13
www.st.com
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Contents ULQ2801 - ULQ2802 - ULQ2803 - ULQ2804
Contents
1 Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
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ULQ2801 - ULQ2802 - ULQ2803 - ULQ2804 Diagrams
1 Diagrams
Figure 1. Schematic diagrams
For ULQ2801A (each driver for PMOS-CMOS) For ULQ2802A (each driver for 14-15 V PMOS)
For ULQ2804A (each driver for 6-15 V CMOS/PMOS)For ULQ2803A (each driver for 5 V, TTL/CMOS)
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Pin configuration ULQ2801 - ULQ2802 - ULQ2803 - ULQ2804
2 Pin configuration
Figure 2. Pin connections (top view)
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