Data Sheet
29317.2B*
2543
PROTECTED
QUAD POWER DRIVER
UDN/UDQ2543B (DIP)
OUT4
1
16
IN 4
K
2
15
IN3
OUT3
3
14
ENABLE
GROUND
4
13
GROUND
GROUND
5
12
GROUND
OUT2
6
11
V CC
K
7
10
IN 2
OUT1
8
9
IN 1
Providing interface between low-level logic and power loads to
100 W, the UDx2543B and UDx2543EB quad power drivers combine
AND logic gates and high-current bipolar outputs. Each of the four
independent outputs can sink up to 700 mA in the ON state. The
outputs have a minimum breakdown voltage (load dump) of 60 V and
a sustaining voltage of 35 V. The inputs are compatible with most
TTL, DTL, LSTTL, and 5 V CMOS and PMOS logic systems.
T
C
U
D
O y
R nl
P O
Over-current protection has been designed into each channel of
the UDx2543B/EB and typically occurs at 1 A. It protects any one
channel from output short circuits with supply voltages up to 25 V.
When the maximum output current is reached, that output stage is
driven linearly. If the over-current condition continues, that output’s
thermal limiting will operate, limiting that output’s power dissipation to
approximately 2.4 W. The outputs also include diodes for voltage
clamping with inductive loads such as relays, solenoids, or dc stepper
motors.
These devices are supplied in a 16-pin power DIP of batwing
construction (suffix ‘B’) to provide for maximum package power dissipation. They are also available in a 28-lead PLCC (suffix ‘EB’) for
surface-mount applications. All devices are rated for continuous
operation over the temperature range of -20°C to +85°C (UDN2543B/
EB) or for use in automotive applications over an extended temperature range as the UDQ2543B/EB.
D e
E c
U en
IN fer
T e
N R
O r
C Fo
IS
D
Dwg. PP-017-1
ABSOLUTE MAXIMUM RATINGS
at TA = 25°C
Output Voltage, VOUT . . . . . . . . . . . . . 60 V
Over-Current Protected Output Voltage,
VOUT . . . . . . . . . . . . . . . . . . . . . . . 25 V
Output Current, IOUT . . . . . . . . . . . . . 1.0 A*
Supply Voltage, VCC . . . . . . . . . . . . . . 7.0 V
Input Voltage, VIN or VEN . . . . . . . . . . 18 V
Package Power Dissipation,
PD . . . . . . . . . . . . . . . . . . . . See Graph
Operating Temperature Range, TA
(UDN2543B/EB) . . . . -20°C to +85°C
(UDQ2543B/EB) . . . . -40°C to +85°C
Storage Temperature Range,
TS . . . . . . . . . . . . . . . -55°C to +150°C
*Outputs are peak current limited at approximately 1.0 A per driver. See Circuit Description
and Applications for further information.
FEATURES
s
s
s
s
s
700 mA Output Current per Channel
Low Output-Saturation Voltage
Integral Output Transient-Suppression Diodes
TTL, CMOS, PMOS, NMOS Compatible Inputs
Independent Over-Current Protection for Each Output
Always order by complete part number:
Part Number
UDN2543B
UDN2543EB
UDQ2543B
UDQ2543EB
Package
Operating Temperature
16-Pin DIP
-20°C to +85°C
28-Lead PLCC
-20°C to +85°C
16-Pin DIP
-40°C to +85°C
28-Lead PLCC
-40°C to +85°C
