NOTE: For detailed information on purchasing options, contact your
local Allegro field applications engineer or sales representative.
Allegro MicroSystems, Inc. reserves the right to make, from time to time, revisions to the anticipated product life cycle plan for a
product to accommodate changes in production capabilities, alternative product availabilities, or market demand. The information
included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use; nor
for any infringements of patents or other rights of third parties which may result from its use.
Recommended Substitutions:
High-Voltage, High-Current Darlington Arrays
2003 thru 2024
Date of status change: November 1, 2004
These parts are in production but have been determined to be
NOT FOR NEW DESIGN. This classification indicates that sale of
this device is currently restricted to existing customer applications.
The device should not be purchased for new design applications
because obsolescence in the near future is probable. Samples are no
longer available.
Not for New Design
2003
THRU
2024
x = digit to identify specific device. Characteristic shown applies to family of
devices with remaining digits as shown. See matrix on next page.
Data Sheet
29304F
Ideally suited for interfacing between low-level logic circuitry and
multiple peripheral power loads, the Series ULN20xxA/L high-voltage,
high-current Darlington arrays feature continuous load current ratings
to 500 mA for each of the seven drivers. At an appropriate duty cycle
depending on ambient temperature and number of drivers turned ON
simultaneously, typical power loads totaling over 230 W (350 mA x 7,
95 V) can be controlled. Typical loads include relays, solenoids,
stepping motors, magnetic print hammers, multiplexed LED and
incandescent displays, and heaters. All devices feature open-collector
outputs with integral clamp diodes.
The ULN2003A/L and ULN2023A/L have series input resistors
selected for operation directly with 5 V TTL or CMOS. These devices
will handle numerous interface needs — particularly those beyond the
capabilities of standard logic buffers.
The ULN2004A/L and ULN2024A/L have series input resistors for
operation directly from 6 to 15 V CMOS or PMOS logic outputs.
The ULN2003A/L and ULN2004A/L are the standard Darlington
arrays. The outputs are capable of sinking 500 mA and will withstand
at least 50 V in the OFF state. Outputs may be paralleled for higher
load current capability. The ULN2023A/L and ULN2024A/L will
withstand 95 V in the OFF state.
These Darlington arrays are furnished in 16-pin dual in-line plastic
packages (suffix “A”) and 16-lead surface-mountable SOICs (suffix
“L”). All devices are pinned with outputs opposite inputs to facilitate
ease of circuit board layout. All devices are rated for operation over the
temperature range of -20°C to +85°C. Most (see matrix, next page) are
also available for operation to -40°C; to order, change the prefix from
“ULN” to “ULQ”.
FEATURES
■ TTL, DTL, PMOS, or CMOS-Compatible Inputs
■ Output Current to 500 mA
■ Output Voltage to 95 V
■ Transient-Protected Outputs
■ Dual In-Line Plastic Package or Small-Outline IC Package
HIGH-VOLTAGE, HIGH-CURRENT
DARLINGTON ARRAYS
Dwg. No. A-9594
16
15
14
13
12
611
710
89
1
2
3
4
5
Note that the ULN20xxA series (dual in-line
package) and ULN20xxL series (small-outline
IC package) are electrically identical and share
a common terminal number assignment.
ABSOLUTE MAXIMUM RATINGS
Output Voltage, VCE
(ULN200xA and ULN200xL) ........ 50 V
(ULN202xA and ULN202xL) ........ 95 V
Input Voltage, VIN ................................ 30 V
Continuous Output Current,
IC................................................. 500 mA
Continuous Input Current, IIN ........... 25 mA
Power Dissipation, PD
(one Darlington pair)..................... 1.0 W
(total package) ....................... See Graph
Operating Temperature Range,
TA.................................. -20°C to +85°C
Storage Temperature Range,
TS................................. -55°C to +150°C
2003 THRU 2024
HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRAYS
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
VCE(MAX) 50 V 95 V
IC(MAX) 500 mA 500 mA
Logic Part Number
5V ULN2003A* ULN2023A*
TTL, CMOS ULN2003L* ULN2023L
6-15 V ULN2004A* ULN2024A
CMOS, PMOS ULN2004L* ULN2024L
*Also available for operation between -40°C and +85°C. To order, change
prefix from “ULN” to “ULQ”.
Dwg. No. A-9651
COM
7.2K 3K
2.7K
X = Digit to identify specific device. Specification shown applies to family of
devices with remaining digits as shown. See matrix above.
Copyright © 1974, 1998 Allegro MicroSystems, Inc.
Dwg. No. A-9898A
ULN20x4A/L (Each Driver)
COM
7.2K 3K
10.5K
50 75 100 125 150
2.5
0.5
0
ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS
AMBIENT TEMPERATURE IN °C
2.0
1.5
1.0
25
SUFFIX 'L', R = 90°C/W
θJA
Dwg. GP-006A
SUFFIX 'A', R = 60°C/W
θJA
ULN20x3A/L (Each Driver)
DEVICE PART NUMBER DESIGNATION
PARTIAL SCHEMATICS
2003 THRU 2024
HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRAYS
www.allegromicro.com
Test Applicable Limits
Characteristic Symbol Fig. Devices Test Conditions Min. Typ. Max. Units
Output Leakage Current ICEX 1A All VCE = 50 V, TA = 25°C — < 1 50 µA
VCE = 50 V, TA = 70°C — < 1 100 µA
1B ULN2004A/L VCE = 50 V, TA = 70°C, VIN = 1.0 V — < 5 500 µA
Collector-Emitter VCE(SAT) 2AllI
C = 100 mA, IB = 250 µA — 0.9 1.1 V
Saturation Voltage lC = 200 mA, IB = 350 µA — 1.1 1.3 V
IC = 350 mA, IB = 500 µA — 1.3 1.6 V
Input Current IIN(ON) 3 ULN2003A/L VIN = 3.85 V — 0.93 1.35 mA
ULN2004A/L VIN = 5.0 V — 0.35 0.5 mA
VIN = 12 V — 1.0 1.45 mA
IIN(OFF) 4Alll
C = 500 µA, TA = 70°C5065—µA
Input Voltage VIN(ON) 5 ULN2003A/L VCE = 2.0 V, lC = 200 mA — — 2.4 V
VCE = 2.0 V, IC = 250 mA — — 2.7 V
VCE = 2.0 V, lC = 300 mA — — 3.0 V
ULN2004A/L VCE = 2.0 V, lC = 125 mA — — 5.0 V
VCE = 2.0 V, lC = 200 mA — — 6.0 V
VCE = 2.0 V, IC = 275 mA — — 7.0 V
VCE = 2.0 V, lC = 350 mA — — 8.0 V
Input Capacitance CIN —All —1525pF
Turn-On Delay tPLH 8 All 0.5 EIN to 0.5 EOUT — 0.25 1.0 µs
Turn-Off Delay tPHL 8 All 0.5 EIN to 0.5 EOUT — 0.25 1.0 µs
Clamp Diode IR6AllV
R = 50 V, TA = 25°C——50µA
Leakage Current VR = 50 V, TA = 70°C — — 100 µA
Clamp Diode VF7AllI
F = 350 mA — 1.7 2.0 V
Forward Voltage
Complete part number includes suffix to identify package style: A = DIP, L = SOIC.
Types ULN2003A, ULN2003L, ULN2004A, and ULN2004L
ELECTRICAL CHARACTERISTICS at +25°C (unless otherwise noted).
2003 THRU 2024
HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRAYS
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Test Applicable Limits
Characteristic Symbol Fig. Devices Test Conditions Min. Typ. Max. Units
Output Leakage Current ICEX 1A All VCE = 95 V, TA = 25°C — < 1 50 µA
VCE = 95 V, TA = 70°C — < 1 100 µA
1B ULN2024A/L VCE = 95 V, TA = 70°C, VIN = 1.0 V — < 5 500 µA
Collector-Emitter VCE(SAT) 2AllI
C = 100 mA, IB = 250 µA — 0.9 1.1 V
Saturation Voltage lC = 200 mA, IB = 350 µA — 1.1 1.3 V
IC = 350 mA, IB = 500 µA — 1.3 1.6 V
Input Current IIN(ON) 3 ULN2023A/L VIN = 3.85 V — 0.93 1.35 mA
ULN2024A/L VIN = 5.0 V — 0.35 0.5 mA
VIN = 12 V — 1.0 1.45 mA
IIN(OFF) 4Alll
C = 500 µA, TA = 70°C5065—µA
Input Voltage VIN(ON) 5 ULN2023A/L VCE = 2.0 V, lC = 200 mA — — 2.4 V
VCE = 2.0 V, IC = 250 mA — — 2.7 V
VCE = 2.0 V, lC = 300 mA — — 3.0 V
ULN2024A/L VCE = 2.0 V, lC = 125 mA — — 5.0 V
VCE = 2.0 V, lC = 200 mA — — 6.0 V
VCE = 2.0 V, IC = 275 mA — — 7.0 V
VCE = 2.0 V, lC = 350 mA — — 8.0 V
Input Capacitance CIN —All —1525pF
Turn-On Delay tPLH 8 All 0.5 EIN to 0.5 EOUT — 0.25 1.0 µs
Turn-Off Delay tPHL 8 All 0.5 EIN to 0.5 EOUT — 0.25 1.0 µs
Clamp Diode IR6AllV
R = 95 V, TA = 25°C——50µA
Leakage Current VR = 95 V, TA = 70°C — — 100 µA
Clamp Diode VF7AllI
F = 350 mA — 1.7 2.0 V
Forward Voltage
Complete part number includes suffix to identify package style: A = DIP, L = SOIC.
Types ULN2023A, ULN2023L, ULN2024A, and ULN2024L
ELECTRICAL CHARACTERISTICS at +25°C (unless otherwise noted).
2003 THRU 2024
HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRAYS
www.allegromicro.com
OPEN
OPEN VCE
ICEX
µA
VIN
OPEN VCE
ICEX
µA
IB
OPEN
hFE =
VCE
V
IC
IB
IC
VIN
OPEN
mA OPEN
IIN
OPEN VCE
IC
µA
IIN
µA
V
OPEN
VCE
V
VIN
IC
OPEN
VR
IR
µAIF
OPEN VF
V
50%
50%
50%
50%
t pHL t pHLOUTPUT
INPUT
VIN
PULSE
GENERATOR
PRR = 10KHz
DC = 50%
INPUT
93 Ω
50 pF
OU
T
30 Ω
100 Ω
+50 V
Dwg. No. A-9732A Dwg. No. A-9733A Dwg. No. A-9734A
FIGURE 6 FIGURE 7 FIGURE 8
Dwg. No. A-9735A Dwg. No. A-9736A
Vin
ULN20X3* 3.5 V
ULN20X4* 12 V
TEST FIGURES
FIGURE 1A FIGURE 1B FIGURE 2
FIGURE 3 FIGURE 4 FIGURE 5
* Complete part number includes a final letter to indicate package.
X = Digit to identify specific device. Specification shown applies to family of devices with remaining digits as shown.
Dwg. No. A-9731ADwg. No. A-9730ADwg. No. A-9729A
2003 THRU 2024
HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRAYS
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
TYPICAL APPLICATIONS
Dwg. No. A-9652
Dwg. No. A-9654A
+VSS
PMOS
OUTPUT
+V+V
16
15
14
13
12
611
710
89
1
2
3
4
5
200 Ω
CMOS
OUTPUT
+V
16
15
14
13
12
611
710
89
1
2
3
4
5
+VDD
200 Ω
2N4901
0.5
Dwg. GP-067
1.0 2.0
1.5
COLLECTOR-EMITTER SATURATION VOLTAGE
0
600
400
COLLECTOR CURRENT IN mA
200
0
TYPICAL
MAX. SATURATION VOLTAGE
ALLOWABLE COLLECTOR CURRENT
AS A FUNCTION OF DUTY CYCLE
(Dual In-line-Packaged Devices, Suffix ‘A’)
200
Dwg. GP-068
400 600
INPUT CURRENT IN µA
0
600
400
COLLECTOR CURRENT IN mA
200
0
MAX. REQ'D INPUT CURRENT
TYPICAL
COLLECTOR CURRENT AS A
FUNCTION OF INPUT CURRENT
SATURATION VOLTAGE
AS A FUNCTION OF COLLECTOR CURRENT
20
Dwg. GP-070
40 10080
DUTY CYCLE IN PER CENT
0
600
400
OUTPUT CURRENT IN mA/CHANNEL
200
0
60
7
2
3
4
5
6
NUMBER OF OUTPUTS
CONDUCTING
SIMULTANEOUSLY
1
T
A
= +70°C
R
θJA
= 60°C/W
20
Dwg. GP-044A
40 10080
DUTY CYCLE IN PER CENT
0
600
400
OUTPUT CURRENT IN mA/CHANNEL
200
0
60
NUMBER OF OUTPUTS
CONDUCTING
SIMULTANEOUSLY
T
A
= +70°C
R
θJA
= 90°C/W
7654
3
2
(Small-Outline-Packaged Devices, Suffix ‘L’)
2003 THRU 2024
HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRAYS
www.allegromicro.com
TYPICAL APPLICATIONS INPUT CURRENT
AS A FUNCTION OF INPUT VOLTAGE
Types ULN2004A, ULN2004L, ULN2024A, and
ULN2024L
16
15
14
13
12
611
710
89
1
2
3
4
5
Dwg. No. A-9653A
+V+VCC
TTL
OUTPUT
16
15
14
13
12
611
710
89
1
2
3
4
5
Dwg. No. A-10,175
+V
+VCC
TTL
OUTPUT
RP
Types ULN2003A, ULN2003L, ULN2023A, and
ULN2023L
3.0
Dwg. GP-069
5.0 6.0
INPUT VOLTAGE
2.0
2.5
2.0
INPUT CURRENT IN mA — I
IN
1.0
0
MAXIMUM
0.5
1.5
4.0
AREA OF NORMAL OPERATION
WITH STANDARD OR SCHOTTKY TTL
TYPICAL
6
Dwg. GP-069-1
10 12
INPUT VOLTAGE
5
2.0
INPUT CURRENT IN mA — I
IN
1.0
0
MAXIMUM
0.5
1.5
8
TYPICAL
7911
2003 THRU 2024
HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRAYS
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
PACKAGE DESIGNATOR “A”
Dimensions in Inches
(controlling dimensions)
Dimension in Millimeters
(for reference only)
NOTES: 1. Leads 1, 8, 9, and 16 may be half leads at vendor’s option.
2. Lead thickness is measured at seating plane or below.
3. Lead spacing tolerance is non-cumulative.
4. Exact body and lead configuration at vendor’s option within limits shown.
0.355
0.204
7.62
BSC
Dwg. MA-001-16A mm
10.92
MAX
16
18
7.11
6.10
5.33
MAX
1.77
1.15
0.39
MIN
0.558
0.356
2.54
BSC
0.13
MIN
3.81
2.93
9
19.68
18.67
0.014
0.008
0.300
BSC
Dwg. MA-001-16A in
0.430
MAX
16
18
0.280
0.240
0.210
MAX
0.070
0.045
0.015
MIN
0.022
0.014
0.100
BSC
0.005
MIN
0.150
0.115
9
0.775
0.735
2003 THRU 2024
HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRAYS
www.allegromicro.com
PACKAGE DESIGNATOR “L”
Dimensions in Inches
(for reference only)
Dimension in Millimeters
(controlling dimensions)
NOTES: 1. Lead spacing tolerance is non-cumulative.
2. Exact body and lead configuration at vendor’s option within limits shown.
0°
TO
8°
10.0
9.80
6.20
5.80 1.27
0.40
Dwg. MA-007-16A mm
1.27
BSC
0.25
0.19
1 2 3
4.00
3.80
0.51
0.33
1.75
1.35
0.10
MIN.
16 9
0° TO 8°
0.3937
0.3859
0.2440
0.2284 0.050
0.016
Dwg. MA-007-16 in
0.050
BSC
0.0098
0.0075
1 2 3
0.1574
0.1497
0.020
0.013
0.0688
0.0532
0.0040 MIN.
16 9
2003 THRU 2024
HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRAYS
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
The products described here are manufactured under one or more
U.S. patents or U.S. patents pending.
Allegro MicroSystems, Inc. reserves the right to make, from time to
time, such departures from the detail specifications as may be required
to permit improvements in the performance, reliability, or
manufacturability of its products. Before placing an order, the user is
cautioned to verify that the information being relied upon is current.
Allegro products are not authorized for use as critical components
in life-support devices or systems without express written approval.
The information included herein is believed to be accurate and
reliable. However, Allegro MicroSystems, Inc. assumes no responsi-
bility for its use; nor for any infringement of patents or other rights of
third parties which may result from its use.
