ALLEGRO 2003, 2024 DATA SHEET

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1

2

3

4

5

611

710

89

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.

16

15

14

13

12

Dwg. No. A-9594

ABSOLUTE MAXIMUM RATINGS

Output Voltage, V

(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, P

(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

CE

D

2003

THRU

29304F

2024

HIGH-VOLTAGE, HIGH-CURRENT

DARLINGTON ARRAYS

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

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

2003 THRU 2024

HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRAYS

DEVICE PART NUMBER DESIGNATION

PARTIAL SCHEMATICS

ULN20x3A/L (Each Driver)

2.7K

3K

7.2K

COM

V

CE(MAX)

I

C(MAX)

50 V 95 V

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”.

2.5

2.0

ULN20x4A/L (Each Driver)

10.5K

3K

7.2K

Dwg. No. A-9651

COM

Dwg. No. A-9898A

SUFFIX 'A', R = 60°C/W

1.5

1.0

0.5

0

25

ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS

SUFFIX 'L', R = 90°C/W

50 75 100 125 150

AMBIENT TEMPERATURE IN °C

θJA

θJA

Dwg. GP-006A

X = Digit to identify specific device. Specification shown applies to family of
devices with remaining digits as shown. See matrix above.

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]

Copyright © 1974, 1998 Allegro MicroSystems, Inc.

2003 THRU 2024

HIGH-VOLTAGE,

HIGH-CURRENT

DARLINGTON ARRAYS

Types ULN2003A, ULN2003L, ULN2004A, and ULN2004L
ELECTRICAL CHARACTERISTICS at +25°C (unless otherwise noted).

Test Applicable Limits

Characteristic Symbol Fig. Devices Test Conditions Min. Typ. Max. Units

Output Leakage Current I

Collector-Emitter V
Saturation Voltage

Input Current I

Input Voltage V

Input Capacitance C

Turn-On Delay t

Turn-Off Delay t

Clamp Diode I
Leakage Current

Clamp Diode V
Forward Voltage

CE(SAT)

IN(ON)

I

IN(OFF)

IN(ON)

CEX

IN

PLH

PHL

R

F

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

2AllI

3 ULN2003A/L VIN = 3.85 V — 0.93 1.35 mA

ULN2004A/L VIN = 5.0 V — 0.35 0.5 mA

4Alll

5 ULN2003A/L VCE = 2.0 V, lC = 200 mA — — 2.4 V

ULN2004A/L VCE = 2.0 V, lC = 125 mA — — 5.0 V

—All —1525pF

8 All 0.5 EIN to 0.5 E

8 All 0.5 EIN to 0.5 E

6AllV

7AllI

= 100 mA, IB = 250 µA — 0.9 1.1 V

C

l

= 200 mA, IB = 350 µA — 1.1 1.3 V

C

IC = 350 mA, IB = 500 µA — 1.3 1.6 V

V

= 12 V — 1.0 1.45 mA

IN

= 500 µA, TA = 70°C5065—µA

C

VCE = 2.0 V, IC = 250 mA — — 2.7 V

VCE = 2.0 V, lC = 300 mA — — 3.0 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, l

= 50 V, TA = 25°C——50µA

R

VR = 50 V, TA = 70°C — — 100 µA

= 350 mA — 1.7 2.0 V

F

= 350 mA — — 8.0 V

C

OUT

OUT

— 0.25 1.0 µs

— 0.25 1.0 µs

Complete part number includes suffix to identify package style: A = DIP, L = SOIC.

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