Features
DIP-18
Eight Darlington transistor s with common
emitters
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
ULN2801A, ULN2802A,
ULN2803A, ULN2804A
Eight Darlington arrays
Datasheet - production data
Description
The ULN2801A, ULN2802A, ULN2803A and
ULN2804A 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.
Four versions are available to simplify interfacing
to standard logic families: the ULN2801A is
designed for general purpose applications with a
current limit resistor; the ULN2802A has a 10.5
k input resistor and Zener for 14-25 V PMOS;
the ULN2803A has a 2.7 k input resistor for 5 V
TTL and CMOS; the ULN2804A has a 10.5 k
input resistor for 6-15 V CMOS.
All types are supplied in an 18-lead plastic DIP
with a copper lead form and feature the
convenient input-opposite-output pinout to
simplify board layout.
Table 1. Device summary
Order codes Package
ULN2801A
ULN2802A
ULN2803A
ULN2804A
June 2018 DocID1536 Rev 4 1/14
This is information on a product in full production.
DIP-18
www.st.com
Contents ULN2801A, ULN2802A, ULN2803A, ULN2804A
Contents
1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2/14 DocID1536 Rev 4
ULN2801A, ULN2802A, ULN2803A, ULN2804A Diagram
For ULN2801A (each driver for PMOS-CMOS) For ULN2802A (each driver for 14-15V PMOS)
For ULN2804A (each driver for 6-15V CMOS/PMOS)For ULN2803A (each driver for 5V, TTL/CMOS)
1 Diagram
Figure 1. Schematic diagrams
DocID1536 Rev 4 3/14
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Pin configuration ULN2801A, ULN2802A, ULN2803A, ULN2804A
2 Pin configuration
Figure 2. Pin connections (top view)
4/14 DocID1536 Rev 4
ULN2801A, ULN2802A, ULN2803A, ULN2804A Maximum ratings
3 Maximum ratings
Table 2. Absolute maximum ratings
Symbol Parameter Value Unit
V
O
V
I
I
C
I
B
Output voltage 50 V
Input voltage (for ULN2802A - ULN2803A - ULN2804A) 30 V
Continuous collector current 500 mA
Continuous base current 25 mA
Power Dissipation (one Darlington pair) 1
P
T
TOT
T
STG
T
A
J
Power Dissipation (total package) 2.25
Operating ambient temperature range - 20 to 85 °C
Storage temperature range - 55 to 150 °C
Junction temperature -20 to 150 °C
Table 3. Thermal data
Symbol Parameter Value Unit
R
thJA
Thermal resistance junction-ambient 55 C/W
W
DocID1536 Rev 4 5/14
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Electrical characteristics ULN2801A, ULN2802A, ULN2803A, ULN2804A
4 Electrical characteristics
TA = 25 °C unless otherwise specified.
Symbol Parameter Test condition Min. Typ. Max. Unit
I
CEX
V
CE(SAT)
I
I(ON)
I
I(OFF)
V
I(ON)
h
t
PLH
t
PHL
V
Output leakage current
Collector-emitter saturation
voltage (Figure 5)
Input current (Figure 6)
Input current (Figure 7)T
Input voltage (Figure 8)
DC Forward current gain
FE
(Figure 5)
Input capacitance 15 25 pF
C
I
Turn-on delay time 0.5 VI to 0.5V
Turn-off delay time 0.5 VI to 0.5V
Clamp diode leakage current
I
R
(Figure 9)
Clamp diode forward voltage
F
(Figure 10)
Table 4. Electrical characteristics
= 50V
V
CE
T
= 70 °C, V
A
= 70°C for ULN2802A, V
T
A
= 6 V (Figure 4)
V
I
= 70°C for ULN2804A, VCE = 50 V,
T
A
= 1 V (Figure 4)
V
I
= 100 mA, IB = 250 µA 0.9 1.1
I
C
= 200 mA, IB = 350 µA 1.1 1.3
C
= 350 mA, IB = 500 µA 1.3 1.6
I
C
for ULN2802A, V
for ULN2803A, V
for ULN2804A, V
VI = 12 V
= 70 °C, IC = 500 µA 50 65 µA
A
= 2V, for ULN2802A
V
CE
= 300 mA
I
C
for ULN2803A
IC = 200 mA
= 250 mA
I
C
IC = 300 mA
for ULN2804A
= 125 mA
I
C
IC = 200 mA
= 275 mA
I
C
= 350 mA
I
C
for ULN2801A, VCE = 2 V,
= 350 mA
I
C
= 50 V 50
V
R
= 70 °C, VR = 50 V 100
T
A
= 350 mA 1.7 2 V
I
F
= 50 V (Figure 3)50
CE
= 50 V,
CE
= 17 V 0.82 1.25
I
= 3.85 V 0.93 1.35
I
= 5 V
I
0.35 0.5
11.45
1000
O
O
0.25 1 µs
0.25 1 µs
100
500
13
2.4
2.7
3
5
6
7
8
µA
VI
mA
V
µA
6/14 DocID1536 Rev 4
ULN2801A, ULN2802A, ULN2803A, ULN2804A Test circuits
5 Test circuits
Figure 3. Output leakage current Figure 4. Output leakage current (for ULN2802A
only)
Figure 5. Collector-emitter saturation voltage Figure 6. Input current (ON)
Figure 7. Input current (OFF) Figure 8. Input voltage
DocID1536 Rev 4 7/14
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Test circuits ULN2801A, ULN2802A, ULN2803A, ULN2804A
Figure 9. Clamp diode leakage current Figure 10. Clamp diode forward voltage
8/14 DocID1536 Rev 4
ULN2801A, ULN2802A, ULN2803A, ULN2804A Typical performance characteristics
6 Typical performance characteristics
Figure 11. Collector current as a function of
saturation voltaget
Figure 13. Allowable average power dissipation
as a function of T
A
Figure 12. Collector current as a function of
input current
Figure 14. Peak collector current as a function
of duty cycle
DocID1536 Rev 4 9/14
14
Typical performance characteristics ULN2801A, ULN2802A, ULN2803A, ULN2804A
Figure 15. Peak collector current as a function
of duty cycle
Figure 17. Input current as a function of input
voltage (for ULN2804A)
Figure 16. Input current as a function of input
voltage (for ULN2802A)
Figure 18. Input current as a function of input
voltage (for ULN2803A)
10/14 DocID1536 Rev 4
ULN2801A, ULN2802A, ULN2803A, ULN2804A Package mechanical data
7 Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK
®
packages, depending on their level of environmental compliance. ECOPACK®
®
is an ST trademark.
DocID1536 Rev 4 11/14
14
Package mechanical data ULN2801A, ULN2802A, ULN2803A, ULN2804A
Table 5. DIP-18 mechanical data
mm.
Dim.
Min. Typ. Max.
a1 0.254
B1.39 1.65
b0.46
b1 0.25
D 23.24
E8.5
e2.54
e3 20.32
F 7.1
I 3.93
L3.3
Z1.271.59
Figure 19. DIP-18 package dimensions
12/14 DocID1536 Rev 4
ULN2801A, ULN2802A, ULN2803A, ULN2804A Revision history
8 Revision history
Table 6. Document revision history
Date Revision Changes
18-Sep-2003 1 First release
10-Mar-2010 2 Updated package mechanical data
19-Nov-2012 3 Modified input voltage values Table 4 on page 6.
27-Jun-2018 4 Updated: I
test condition in Table 4: Electrical characteristics.
I(ON)
DocID1536 Rev 4 13/14
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ULN2801A, ULN2802A, ULN2803A, ULN2804A
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14/14 DocID1536 Rev 4
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