ULN 2801A
U LN 2804A - ULN2805A
U LN2802A - ULN2803A
September 1997
EIGHT DARLINGTON ARRAYS
.
EIGHT DARLINGTONS WITH COMMON EMIT-
TERS
.
OUTPUT CURRENT TO 500 mA
.
OUTPUT VOLTAGE TO 50 V
.
INTEGRAL SUPPRESSION DIODES
.
VERSIONS FOR ALL POPULAR LOGIC FAMI-
LIES
.
OUTPUT CAN BE PARALLELED
.
INPUTS PINNED OPPOSITE OUTPUTS TO
SIMPLIFY BOARD LAYOUT
DESCRIPTION
The ULN2801A-ULN2805Aeach contain eight dar-
lington transistors with common emitters and inte-
gral suppression diodes for inductive loads. Each
darlington features a peak load current rating of
600mA (500mA continuous) and can withstand at
least 50V in the off state. Outputsmay be paralleled
for higher current capability.
Five versions are available to simplify interfacing to
standard logic families : the ULN2801A is designed
for general purpose applications with a current limit
resistor ; the ULN2802Ahas a 10.5k
input resistor
and zener for 14-25V PMOS ; the ULN2803A has a
2.7k
input resistor for 5V TTL and CMOS ; the
ULN2804A has a 10.5k
input resistor for 6-15V
CMOS and the ULN2805A is designed to sink a
minimum of 350mA for standard and Schottky TTL
where higher output current is required.
All types are supplied in a 18-lead plastic DIP with
a copperlead from and featurethe convenientinput-
opposite-output pinout to simplify board layout.
DIP18
PIN CONNECTION (top view)
1/8
SCHEMATIC DIAGRAM AND ORDER CODES
For ULN2801A (each driver for PMOS-CMOS)
For ULN2802A (each driver for 14-15 V PMOS)
For
ULN2804A
(each
driver
for
6-15
V
CMOS/PMOS
For ULN2803A (each driver for 5 V, TTL/CMOS)
For ULN2805A (each driver for high out TTL)
ULN2801A - ULN2802A - ULN2803A - ULN2804A - ULN2805A
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THERMAL DATA
Symbol
Parameter
Value
Unit
R
th jamb
Thermal Resistance Junction-ambient
Max.
55
C/W
ELECTRICAL CHARACTERISTICS (T
amb
= 25
o
C unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Fig.
I
CEX
Output Leakage Current
V
CE
= 50V
T
amb
= 70
C, V
CE
= 50V
T
amb
= 70
C
for ULN2802A
V
CE
= 50V, V
i
= 6V
for ULN2804A
V
CE
= 50V, V
i
= 1V
50
100
500
500
A
A
A
A
1a
1a
1b
1b
V
CE(sat)
Collector-emitter
Saturation Voltage
I
C
= 100mA, I
B
= 250
A
I
C
= 200mA, I
B
= 350
A
I
C
= 350mA, I
B
= 500
A
0.9
1.1
1.3
1.1
1.3
1.6
V
V
V
2
I
i(on)
Input Current
for ULN2802A
V
i
= 17V
for ULN2803A
V
i
= 3.85V
for ULN2804A
V
i
= 5V
V
i
= 12V
for ULN2805A
V
i
= 3V
0.82
0.93
0.35
1
1.5
1.25
1.35
0.5
1.45
2.4
mA
mA
mA
mA
mA
3
I
i(off)
Input Current
T
amb
= 70
C, I
C
= 500
A
50
65
A
4
V
i(on)
Input Voltage
V
CE
= 2 V
for ULN2802A
I
C
= 300mA
for ULN2803A
I
C
= 200mA
I
C
= 250mA
I
C
= 300mA
for ULN2804A
I
C
= 125mA
I
C
= 200mA
I
C
= 275mA
I
C
= 350mA
for ULN2805A
I
C
= 350mA
13
2.4
2.7
3
5
6
7
8
2.4
V
V
V
V
V
V
V
V
V
5
h
FE
DC Forward Current Gain
for ULN2801A
V
CE
= 2V, I
C
= 350mA
1000
2
C
i
Input Capacitance
15
25
pF
t
PLH
Turn-on Delay Time
0.5 V
i
to 0.5 V
o
0.25
1
s
t
PHL
Turn-off Delay Time
0.5 V
i
to 0.5 V
o
0.25
1
s
I
R
Clamp Diode Leakage Current
V
R
= 50V
T
amb
= 70
C, V
R
= 50V
50
100
A
A
6
6
V
F
Clamp Diode Forward Voltage
I
F
= 350mA
1.7
2
V
7
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
o
Output Voltage
50
V
V
i
Input Voltage
for ULN2802A, UL2803A, ULN2804A
for ULN2805A
30
15
V
I
C
Continuous Collector Current
500
mA
I
B
Continuous Base Current
25
mA
P
tot
Power Dissipation
(one Darlington pair)
(total package)
1.0
2.25
W
T
amb
Operating Ambient Temperature Range
20 to 85
C
T
stg
Storage Temperature Range
55 to 150
C
Tj
Junction Temperature Range
20 to 150
C
ULN2801A - ULN2802A - ULN2803A - ULN2804A - ULN2805A
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TEST CIRCUITS
Figure 1a.
Figure 1b.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
ULN2801A - ULN2802A - ULN2803A - ULN2804A - ULN2805A
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Figure 8 : Collector Current as a Function of
Saturation Voltage.
Figure 9 : Collector Current as a Function of
Input Current.
Figure 10 : Allowable Average Power Dissipation
as a Function of Ambient Temperature.
Figure 11 : Peak Collector Current as a Function
of Duty Cycle.
Figure 12 : Peak Collector Current as a Function
of Duty.
Figure 13 : Input Current as a Function of Input
Voltage (for ULN2802A).
ULN2801A - ULN2802A - ULN2803A - ULN2804A - ULN2805A
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Figure 14 : Input Current as a Function of Input
Voltage (for ULN2804A)
Figure 15 : Input Current as a Function of Input
Voltage (for ULN2803A)
Figure 16 : Input Current as a Function of Input
Voltage (for ULN2805A)
ULN2801A - ULN2802A - ULN2803A - ULN2804A - ULN2805A
6/8
DIP18 PACKAGE MECHANICAL DATA
DIM.
mm
inch
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
a1
0.254
0.010
B
1.39
1.65
0.055
0.065
b
0.46
0.018
b1
0.25
0.010
D
23.24
0.915
E
8.5
0.335
e
2.54
0.100
e3
20.32
0.800
F
7.1
0.280
I
3.93
0.155
L
3.3
0.130
Z
1.27
1.59
0.050
0.063
ULN2801A - ULN2802A - ULN2803A - ULN2804A - ULN2805A
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Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for
the consequences of use of such information nor for any infringement of patents or other rig hts of third parties which may result from its
use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specification
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously
supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems
without express written approval of SGS-THOMSON Microelectronics.
1997 SGS-THOMSON Microelectronics Printed in Italy All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
Australia - Brazil - Canada - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco -
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ULN2801A - ULN2802A - ULN2803A - ULN2804A - ULN2805A
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