This is information on a product in full production.
June 2018 DocID1536 Rev 4 1/14
ULN2801A, ULN2802A,
ULN2803A, ULN2804A
Eight Darlington arrays
Datasheet - production data
Features
Eight Darlington transistors 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 para lleled
Inputs pinned opposite outputs to simplify
board layout
Description
The ULN2801A, ULN2802A, ULN2803A and
ULN2804A each contain eight Darlington
transistors with common emitters and integral
suppression diodes for inductive l oads. 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-le a d plastic DIP
with a copper lead form and feature th e
convenient input-opposite-output pinout to
simplify board layout.
DIP-18
Table 1. De vi ce summary
Order codes Package
ULN2801A
DIP-18
ULN2802A
ULN2803A
ULN2804A
www.st.com
Contents ULN2801A, ULN2802A, ULN2803A, ULN2804A
2/14 DocID1536 Rev 4
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
DocID1536 Rev 4 3/14
ULN2801A, ULN2802A, ULN2803A, ULN2804A Diagram
14
1 Diagram
Figure 1. Schematic diagrams
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)
Pin configuration ULN2801A, ULN2802A, ULN2803A, ULN2804A
4/14 DocID1536 Rev 4
2 Pin configuration
Figure 2. Pin connections (top view)
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ULN2801A, ULN2802A, ULN2803A, ULN2804A Maximum ratings
14
3 Maximum ratings
Table 2. Absolute maximum ratings
Symbol Parameter Value Unit
V
O
Output voltage 50 V
V
I
Input voltage (for ULN2802A - ULN2803A - ULN2804A) 30 V
I
C
Continuous collector current 500 mA
I
B
Continuous base current 25 mA
P
TOT
Power Dissipation (one Darlington pair) 1 W
Power Dissipation (total package) 2.25
T
A
Operating ambient temperature range - 20 to 85 °C
T
STG
Storage temperature range - 55 to 150 °C
T
J
Junction temperature -20 to 150 °C
Table 3. Thermal data
Symbol Parameter Value Unit
RthJA Thermal resistance junction-ambient 55 C/W
Electrical characteristics ULN2801A, ULN2802A, ULN2803A, ULN2804A
6/14 DocID1536 Rev 4
4 Electrical characteristics
T
A
= 25 °C unless otherwise specified.
Table 4. Electrical characteristics
Symbol Parameter Test co ndition Min. Typ . Max. Unit
I
CEX
Output leakage current
V
CE
= 50V
µA
T
A
= 70 °C, V
CE
= 50 V (Figure 3)50
T
A
= 70°C for ULN2802A, V
CE
= 50 V,
V
I
= 6 V (Figure 4)100
T
A
= 70°C for ULN2804A, V
CE
= 50 V,
V
I
= 1 V (Figure 4)500
V
CE(SAT)
Collector-emitter saturation
voltage (Figure 5)
I
C
= 100 mA, I
B
= 250 µA 0.9 1.1
VI
C
= 200 mA, I
B
= 350 µA 1.1 1.3
I
C
= 350 mA, I
B
= 500 µA 1.3 1.6
I
I(ON)
Input current (Figure 6)
for ULN2802A, V
I
= 17 V 0.82 1.25
mA
for ULN2803A, V
I
= 3.85 V 0.93 1.35
for ULN2804A, V
I
= 5 V
V
I
= 12 V 0.35 0.5
11.45
I
I(OFF)
Input current (Figure 7)T
A
= 70 °C, I
C
= 500 µA 50 65 µA
V
I(ON)
Input voltage (Figure 8)
V
CE
= 2V, for ULN2802A
IC = 300 mA
for ULN2803A
I
C
= 200 mA
I
C
= 250 mA
I
C
= 300 mA
for ULN2804A
I
C
= 125 mA
I
C
= 200 mA
I
C
= 275 mA
I
C
= 350 mA
13
2.4
2.7
3
5
6
7
8
V
h
FE
DC Forward current gain
(Figure 5)for ULN2801A, V
CE
= 2 V,
I
C
= 350 mA 1000
C
I
Input capacitance 15 25 pF
t
PLH
Turn-on delay time 0.5 V
I
to 0.5V
O
0.25 1 µs
t
PHL
Turn-off delay time 0.5 V
I
to 0.5V
O
0.25 1 µs
I
R
Clamp diode leakage current
(Figure 9)V
R
= 50 V 50 µA
T
A
= 70 °C, V
R
= 50 V 100
V
F
Clamp diode forward voltage
(Figure 10)I
F
= 350 mA 1.7 2 V
DocID1536 Rev 4 7/14
ULN2801A, ULN2802A, ULN2803A, ULN2804A Test circuits
14
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
Test circuits ULN2801A, ULN2802A, ULN2803A, ULN2804A
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Figure 9. Clamp diode leakage current Figure 10. Clamp diode forward voltage
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ULN2801A, ULN2802A, ULN2803A, ULN2804A Typical performance characteristics
14
6 Typical performance characteristics
Figure 11. Collector current as a function of
saturation voltaget Figure 12. Collector current as a function of
input current
Figure 13. Allowable average power d issipation
as a function of TA
Figure 14. Peak collector current as a function
of duty cycle
Typical performance characteristics ULN2801A, ULN2802A, ULN2803A, ULN2804A
10/14 DocID1536 Rev 4
Figure 15. Peak collector current as a function
of duty cycle Figure 16. Input current as a function of input
voltage (for ULN2802A)
Figure 17. Input current as a function of input
voltage (for ULN2804A) Figure 18. Input current as a function of input
voltage (for ULN2803A)
DocID1536 Rev 4 11/14
ULN2801A, ULN2802A, ULN2803A, ULN2804A Package mechanical data
14
7 Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental comp liance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
Package mechanical data ULN2801A, ULN2802A, ULN2803A, ULN2804A
12/14 DocID1536 Rev 4
Figure 19. DIP-18 package dimensions
Table 5. DIP-18 mechanical data
Dim. mm.
Min. Typ. Max.
a1 0.254
B1.39 1.65
b0.46
b1 0.25
D23.24
E8.5
e2.54
e3 20.32
F7.1
I3.93
L3.3
Z1.271.59
DocID1536 Rev 4 13/14
ULN2801A, ULN2802A, ULN2803A, ULN2804A Revision history
14
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: II(ON) test condition in Table 4: Electrical characteristics.
ULN2801A, ULN2802A, ULN2803A, ULN2804A
14/14 DocID1536 Rev 4
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