8-Digit Darlington Current Driver
ULN2803A
FEATURES
•
•
•
•
•
•
•
8 Darlington Arrays per Package
500 mA Rated Collector Current (Single Output)
Output voltage 50V
Output Clamp Diodes
Input Compatible with Various Types of Logic
Relay-Driver Applications
Input pins placed opposite to output pins to simplify
layout
SOP-18
APPLICATION
•
•
•
•
•
•
Relay Drivers
Stepper and DC Brushed Motor Drivers
Lamp Drivers
Display Drivers
Line Drivers
Logic Buffers
DIP-18
ORDERING INFORMATION
DESCRIPTION
The ULN2803A is monolithic high-voltage, high-current
Darlington transistor arrays. Each consists of eight
NPN Darlington pairs that feature high-voltage outputs
with common-cathode clamp diodes for switching
inductive loads. The collector-current rating of a single
Darlington pair is 500 mA. The Darlington pairs may
be paralleled for higher current capability. Applications
include relay drivers, hammer drivers, lamp drivers,
display drivers (LED and gas discharge), line drivers,
and logic buffers.
Device
Package
ULN2803AD
SOP-18
ULN2803AN
DIP-18
ABSOLUTE MAXIMUM RATINGS (Note 1)
CHARACTERISTIC
SYMBOL
MIN.
MAX.
UNIT
VO
-
50
V
VI
-
30
V
Peak Collector Current
IC
-
500
mA
Output Clamp Current
IOK
-
500
mA
Total Emitter-Terminal Current
IE
-
2.5
A
Maximum Junction Temperature
TJ
-
150
°C
Output Voltage
Input Voltage
(Note 2)
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8-Digit Darlington Current Driver
ULN2803A
RECOMMENDED OPERATIONG CONDITIONS
CHARACTERISTIC
SYMBOL
MIN.
MAX.
UNIT
Output Voltage
VO
-
50
V
Junction Temperature
TJ
-40
125
°C
Operating Free-Air Temperature Range
TA
-40
85
°C
ORDERING INFORMATION
Package
Order No.
Description
Package Marking
Status
SOP-18
ULN2803AD
8-Digit Darlington Current Driver
ULN2803A
Active
DIP-18
ULN2803AN
8-Digit Darlington Current Driver
ULN2803A
Active
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8-Digit Darlington Current Driver
ULN2803A
PIN CONFIGURATION
SOP-18 / DIP-18
PIN DESCRIPTION
Pin No.
Pin Name
SOP-18
DIP-18
1
1
1B
2
2
2B
3
3
3B
4
4
4B
5
5
5B
6
6
6B
7
7
7B
8
8
8B
9
9
E
10
10
COM
11
11
8C
12
12
7C
13
13
6C
14
14
5C
15
15
4C
16
16
3C
17
17
2C
18
18
1C
Pin Function
Channel 1 through 8 Darlington Base Input
Common Emitter shared by All Channels
Common Cathode Node for Flyback Diodes
Channel 1 through 8 Darlington Collector Output
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8-Digit Darlington Current Driver
ULN2803A
PIN CONNECTION DIAGRAM
BLOCK DIAGRAM
D2
Input
B
COM
Output
C
R1
VT1
VT2
R2
R3
D3
E
R1 : Resistor
2.7kΩ
R2 : Resistor
7.2 kΩ
R3 : Resistor
3.0 kΩ
D1
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8-Digit Darlington Current Driver
ULN2803A
ELECTRICAL CHARACTERISTICS (Note 3)
Limits in standard typeface are for TJ=25°C, unless otherwise specified.
PARAMETER
ON-State Input Voltage
Collector-Emitter
Saturation Voltage
Output Leakage Current
SYMBOL
VI(ON)
VCE(SAT)
ICEX
TEST
FIGURE
Fig.1.
Fig. 2.
Fig. 3.
Fig. 4.
TEST CONDITION
MIN.
TYP.
MAX.
IC=200mA
-
-
2.4
IC=250mA
-
-
2.7
IC=300mA
-
-
3.0
II=250µA, IC=100mA
-
0.9
1.1
II=350µA, IC=200mA
-
1.0
1.3
II=500µA, IC=350mA
-
1.2
1.6
VCE=50V,
II=0mA
-
-
50
II=0mA
-
-
100
VI=1V
-
-
500
-
1.7
2
V
50
65
-
µA
mA
VCE=2V
VCE=50V,
TA=85°C
Clamp Forward Voltage
VF
Fig. 5.
IF=350mA
Off-State Input Current
II(OFF)
Fig. 6.
VCE=50V, IC=500µA, TA=85°C
Input Current
II(ON)
Fig. 7.
VI=3.85V
-
-
1.35
VR=50V
-
-
50
IR
Fig. 8.
VR=50V, TA=85°C
-
-
100
Clamp Diode
Leakage Current
Turn-On Propagation
Delay Time
Turn-Off Propagation
Delay Time
UNIT
V
V
µA
µA
tPLH
-
0.5VI to 0.5VO
-
0.25
1
tPHL
-
0.5VI to 0.5VO
-
0.25
1
µs
Note 1. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These
are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated
under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for
extended periods may affect device reliability.
Note 2. All voltage values are with respect to the emitter/substrate terminal E, unless otherwise noted.
Note 3. The device is not guaranteed to function outside its operating ratings.
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8-Digit Darlington Current Driver
ULN2803A
PARAMETER MEASUREMENT INFORMATION
Fig. 1. ON-State Input Voltage Test Circuit
Fig. 2. Collector-Emitter Saturation Voltage Test Circuit
Fig. 3. Output Leakage Current Test Circuit
Fig. 4. Output Leakage Current Test Circuit
Fig. 5. Clamp Forward Voltage Test Circuit
Fig. 6. Off-State Input Current Test Circuit
Fig. 7. Input Current Test Circuit
Fig. 8. Clamp Diode Leakage Current Test Circuit
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8-Digit Darlington Current Driver
ULN2803A
Fig. 9. Propagation Delay Time Waveform
APPLICATION INFORMATION
T.B.D.
TYPICAL OPERATING CHARACTERISTICS
T.B.D.
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8-Digit Darlington Current Driver
ULN2803A
REVISION NOTICE
The description in this data sheet is subject to change without any notice to describe its electrical characteristics
properly.
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HTC
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