HIGH-VOL TAGE, HIGH-CURRENT
DARLINGTON ARRA YS
FEATURES
■ TTL, DTL, PMOS, or CMOS Compatible Inputs
■ Output Current to 500 mA
■ Output Voltage to 95 V
■ Transient-Protected Outputs
■ Dual In-Line Package or Wide-Body Small-Outline Package
Data Sheet
29304.3E*
Featuring continuous load current ratings to 500 mA for each of
the drivers, the Series ULN28xxA/LW and ULQ28xxA/LW high-
voltage, high-current Darlington arrays are ideally suited for interfac-
ing between low-level logic circuitry and multiple peripheral power
loads. Typical power loads totaling over 260 W (350 mA x 8, 95 V)
can be controlled at an appropriate duty cycle depending on ambient
temperature and number of drivers turned on simultaneously. Typical
loads include relays, solenoids, stepping motors, magnetic print ham-
mers, multiplexed LED and incandescent displays, and heaters. All
devices feature open-collector outputs with integral clamp diodes.
The ULx2803A, ULx2803LW, ULx2823A, and ULN2823LW
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 ULx2804A, ULx2804LW, ULx2824A, and ULN2824LW
have series input resistors for operation directly from 6 V to 15 V
CMOS or PMOS logic outputs.
The ULx2803A/LW and ULx2804A/LW 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 ULx2823A/LW and ULx2824A/
LW will withstand 95 V in the off state.
These Darlington arrays are furnished in 18-pin dual in-line
plastic packages (suffix ‘A’) or 18-lead small-outline plastic packages
(suffix ‘LW’). All devices are pinned with outputs opposite inputs to
facilitate ease of circuit board layout. Prefix ‘ULN’ devices are rated
for operation over the temperature range of -20°C to +85°C; prefix
‘ULQ’ devices are rated for operation to -40°C.
x = Character to identify specific device. Characteristic shown applies to family
of devices with remaining digits as shown. See matrix on next page.
2803
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18
17
15
14
13
712
811
910
1
2
4
5
6
Dwg. No. A-10,322A
163
ABSOLUTE MAXIMUM RATINGS
Output Voltage, VCE
(x2803x and x2804x) ..................... 50 V
(x2823x and x2824x) ..................... 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
Prefix ‘ULN’.............. -20°C to + 85°C
Prefix ‘ULQ’............... -40°C to +85°C
Storage Temperature Range,
TS................................ -55°C to +150°C
Note that the ULx28xxA series (dual in-line
package) and ULx28xxLW series (small-
outline IC package) are electrically identical
and share a common terminal number assign-
ment.
The ULx2804, ULx2823, & ULx2824 are last-time buy.
Orders accepted until October 19, 2001.
2803
THRU
2824
HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRA YS
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
2
ULx28x4A/LW (Each Driver)
Copyright © 1977, 2001 Allegro MicroSystems, Inc.
VCE(MAX) 50 V 95 V
IC(MAX) 500 mA 500 mA
Logic Part Number
5V ULN2803A* ULN2823A*
TTL, CMOS ULN2803LW* ULN2823LW
6-15 V ULN2804A* ULN2824A*
CMOS, PMOS ULN2804LW* ULN2824LW
*Also available for operation between -40°C and +85°C. To order, change
prefix from ‘ULN’ to ‘ULQ’.
DEVICE PART NUMBER DESIGNATION
50 75 100 125 150
2.5
0.5
0
AMBIENT TEMPERATURE IN °C
2.0
1.5
1.0
25
Dwg. GP-018B
SUFFIX 'A', R = 60°C/W
θJA
SUFFIX 'LW', R = 80°C/W
θJA
ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS
ULx28x3A/LW (Each Driver)
PARTIAL SCHEMATICS
x = Character to identify specific device. Specification shown applies to
family of devices with remaining digits as shown. See matrix above.
The ULx2804, ULx2823, & ULx2824 are last-time buy.
Orders accepted until October 19, 2001.
Dwg. FP-052-2
3 K
7.2 K
2.7 K
Dwg. FP-052-3
3 K
7.2 K
10.5 K
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HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRAYS
www.allegromicro.com
3
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—< 150µA
VCE = 50 V, TA = 70°C — < 1 100 µA
1B ULx2804x VCE = 50 V, TA = 70°C, VIN = 1.0 V — < 5 500 µA
Collector-Emitter VCE(SAT) 2 All IC = 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 ULx2803x VIN = 3.85 V — 0.93 1.35 mA
ULx2804x VIN = 5.0 V — 0.35 0.5 mA
VIN = 12 V — 1.0 1.45 mA
IIN(OFF) 4 All lC = 500 µA, TA = 70°C5065—µA
Input Voltage VIN(ON) 5 ULx2803x 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
ULx2804x 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 — 15 25 pF
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 IR6 All VR = 50 V, TA = 25°C——50µA
Leakage Current VR = 50 V, TA = 70°C — — 100 µA
Clamp Diode VF7 All IF = 350 mA — 1.7 2.0 V
Forward Voltage
Complete part number includes prefix to operating temperature range: ULN = -20°C to +85°C, ULQ = -40°C to +85°C
and a suffix to identify package style: A = DIP, LW = SOIC.
Types ULx2803A, ULx2803LW, ULx2804A, and ULx2804LW
ELECTRICAL CHARACTERISTICS at +25°C (unless otherwise noted).
The ULx2804 is last-time buy.
Orders accepted until October 19, 2001.
2803
THRU
2824
HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRA YS
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
4
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—< 150µA
VCE = 95 V, TA = 70°C — < 1 100 µA
1B ULx2824x VCE = 95 V, TA = 70°C, VIN = 1.0 V — < 5 500 µA
Collector-Emitter VCE(SAT) 2 All IC = 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 ULx2823x VIN = 3.85 V — 0.93 1.35 mA
ULx2824x VIN = 5.0 V — 0.35 0.5 mA
VIN = 12 V — 1.0 1.45 mA
IIN(OFF) 4 All lC = 500 µA, TA = 70°C5065—µA
Input Voltage VIN(ON) 5 ULx2823x 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
ULx2824x 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 — 15 25 pF
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 IR6 All VR = 95 V, TA = 25°C——50µA
Leakage Current VR = 95 V, TA = 70°C — — 100 µA
Clamp Diode VF7 All IF = 350 mA — 1.7 2.0 V
Forward Voltage
Complete part number includes prefix to operating temperature range: ULN = -20°C to +85°C, ULQ = -40°C to +85°C
and a suffix to identify package style: A = DIP, LW = SOIC. Note that the ULQ2823LW and ULQ2824LW are not presently
available.
Types ULx2823A, ULN2823LW, ULx2824A, and ULN2824LW
ELECTRICAL CHARACTERISTICS at +25°C (unless otherwise noted).
The ULx2823 & ULx2824 are last-time buy.
Orders accepted until October 19, 2001.
2803
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2824
HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRAYS
www.allegromicro.com
5
TEST FIGURES
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
ULx28x3x 3.5 V
ULx28x4x 12 V
FIGURE 1A FIGURE 1B FIGURE 2
FIGURE 3 FIGURE 4 FIGURE 5
Dwg. No. A-9731ADwg. No. A-9730ADwg. No. A-9729A
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
PULSE
GENERATOR
PRR = 10 kHz
DC = 50 %
INPUT
93 Ω100 Ω
50 pF
30 Ω
OUT
+50 V
Dwg. EP-072
2803
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2824
HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRA YS
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
6
20
Dwg. GP-070-4
40 10080
DUTY CYCLE IN PER CENT
0
600
400
OUTPUT CURRENT IN mA/CHANNEL
200
060
NUMBER OF OUTPUTS
CONDUCTING
SIMULTANEOUSLY T
A
= +50°C
R
θJA
= 80°C/W
2
3
4
5
6
87
20
Dwg. GP-070-3
40 10080
DUTY CYCLE IN PER CENT
0
600
400
OUTPUT CURRENT IN mA/CHANNEL
200
060
NUMBER OF OUTPUTS
CONDUCTING
SIMULTANEOUSLY
1
T
A
= +70°C
R
θJA
= 80°C/W
8
3
4
6
7
5
2
ALLOWABLE COLLECTOR CURRENT
AS A FUNCTION OF DUTY CYCLE
ULx28xxLW
20
Dwg. GP-070-2
40 10080
DUTY CYCLE IN PER CENT
0
600
400
OUTPUT CURRENT IN mA/CHANNEL
200
060
NUMBER OF OUTPUTS
CONDUCTING
SIMULTANEOUSLY T
A
= +50°C
R
θJA
= 60°C/W
2
3
4
5
6
87
20
Dwg. GP-070-1
40 10080
DUTY CYCLE IN PER CENT
0
600
400
OUTPUT CURRENT IN mA/CHANNEL
200
060
NUMBER OF OUTPUTS
CONDUCTING
SIMULTANEOUSLY
1
T
A
= +70°C
R
θJA
= 60°C/W
8
3
4
6
7
5
2
ALLOWABLE COLLECTOR CURRENT
AS A FUNCTION OF DUTY CYCLE
ULx28xxA
x = Characters to identify specific device. Specification shown applies to family of devices with remaining digits as shown.
2803
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2824
HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRAYS
www.allegromicro.com
7
INPUT CURRENT AS A
FUNCTION OF INPUT VOLTAGE
ULx28x3x
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
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
COLLECTOR CURRENT AS A
FUNCTION OF INPUT CURRENT
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
ULx28x4x
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
SATURATION VOLTAGE AS A FUNCTION OF
COLLECTOR CURRENT
x = Characters to identify specific device. Characteristic shown applies to family of devices with remaining digits as shown.
2803
THRU
2824
HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRA YS
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
8
PACKAGE DESIGNATOR “A” DIMENSIONS
Dimensions in Inches
(controlling dimensions)
Dimensions in Millimeters
(for reference only)
NOTES:1. Exact body and lead configuration at vendor’s option within limits shown.
2. Lead spacing tolerance is non-cumulative.
3. Lead thickness is measured at seating plane or below.
0.014
0.008
0.300
BSC
Dwg. MA-001-18A in
0.430
MAX
18
19
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
10
0.920
0.880
0.355
0.204
7.62
BSC
Dwg. MA-001-18A mm
10.92
MAX
18
19
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
10
23.37
22.35
2803
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HIGH-VOLTAGE,
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DARLINGTON ARRAYS
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9
PACKAGE DESIGNATOR “LW” DIMENSIONS
Dimensions in Inches
(for reference only)
Dimensions in Millimeters
(controlling dimensions)
0°
TO
8°
1
18
23
0.51
0.33
0.10
MIN.
0.32
0.23
1.27
0.40
Dwg. MA-008-18A mm
1.27
BSC
10
7.60
7.40 10.65
10.00
11.75
11.35
2.65
2.35
0°
TO
8°
1 2 3
0.020
0.013
0.0040
MIN.
0.0125
0.0091
0.050
0.016
D
wg. MA-008-18A in
0.050
BSC
18 10
0.419
0.394
0.2992
0.2914
0.4625
0.4469
0.0926
0.1043
NOTES:1. Exact body and lead configuration at vendor’s option within limits shown.
2. Lead spacing tolerance is non-cumulative.
2803
THRU
2824
HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRA YS
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
10
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.
