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ULN2003
LINEAR INTEGRATED CIRCUIT
HIGH VOLTAGE AND HIGH CURRENT
DARLINGTON TRANSISTOR ARRAY
DESCRIPTION
The ULN2003 is a monolithic high voltage and high current
Darlington transistor arrays. It consists of seven NPN darlington
pairs that features high-voltage outputs with common-cathode
clamp diode for switching inductive loads. The collector-current
rating of a single darlington pair is 500mA. The darlington pairs
may be parrlleled for higher current capability. Applications include
relay drivers,hammer drivers, lampdrivers,display drivers(LED gas
discharge),line drivers, and logic buffers.
The ULN2003 has a 2.7kΩ series base resistor for each
darlington pair for operation directly with TTL or 5V CMOS
devices.
DIP-16
FEATURES
* 500mA rated collector current(Single output)
* High-voltage outputs: 50V
* Inputs compatibale with various types of logic.
* Relay driver application
LOGIC DIAGRAM
SCHEMATIC(EACH DARLINGTON PAIR)
1B 1
2B 2
3B 3
4B 4
5B 5
6B 6
7B 7
E8
16 1C
15 2C
14 3C
13 4C
12 5C
11 6C
10 7C
9 COM
2.7kΩ
INPUT B
7.2kΩ
3kΩ
COM
OUPUT C
E
YOUW ANG ELECTRONICS CO.LTD
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ULN2003
LINEAR INTEGRATED CIRCUIT
TYPICAL PERFORMANCE CHARACTERISTICS
Collector-Emitter saturation Voltage
vs. Collector Current
2.5
Collector-Emitter saturation Voltage
vs. Total Collector Current
(two darlington paralleled)
2.5
Ta=25k
2.0
II=250µA
1.5 II=350µA
II=500µA
1.0
Ta=25k
2.0
II=250µA
1.5 II=250µA
1.0 II=500µA
0.5 0.5
0
0 100 200 300 400 500
Collector Current, Ic(mA)
0
0 200 400 600 800 1000
Total Collector Current, Ic(tot) (mA)
Collector Current Vs. Input Current
500
Ta=25k
RL=10Ω
400
Vs=10V
Vs=8V
300
200
100
0
0
50 100 150 200 250
Input Current, Ii(µA)
Maximum Collector Current
Vs. Duty cycle
500
Ta=70k
400 N=1
300 N=2
200 N=5
N=7
100
N= Number of Outputs
Conductiong Simultaneously
0
0 20 40 60 80
Duty Cycle, (%)
100
YOUW ANG ELECTRONICS CO.LTD
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