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ULN2003B
SLRS064B – JUNE 2014 ...
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ULN2003B
SLRS064B – JUNE 2014 – REVISED AUGUST 2016
ULN2003B High-
Voltage, High-Current Darlington Transistor Array
1 Features
1 Greater Than 4x Reduction in Output Leakage (ICEX) over ULN2003A
500-mA Rated Collector Current (Single Output) High-
Voltage Outputs 50 V Output Clamp Diodes Inputs Compatible With Various Types of Logic Relay-Driver Applications
2 Applications
Relay Drivers Lamp Drivers Display Drivers (LED and Gas Discharge) Line Drivers Logic Buffers
3 Description
The ULN2003B device is a high-
voltage, high-current Darlington transistor array. This device consists of seven 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 can be paralleled for higher current capability.
The ULN2003B has a 2.7-kΩ series base resistor for each Darlington pair for operation directly with TTL or
CMOS devices.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
ULN2003BN
PDIP (16)
19.30 mm × 6.35 mm
ULN2003BD
SOIC (16)
9.90 mm × 3.91 mm
ULN2003BPW
TSSOP (16)
5.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at the end of the datasheet.
Simplified Schematic
1 1B
9 COM
16 1C
2 2B
15 2C
3 3B
14 3C
4 4B
13 4C
5 5B
12 5C
6 6B
11 6C
7 7B
10 7C
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