Note the ULN7003A (DIP) and the ULN7003LW
(SOIC) are electrically identical and share a
common terminal number assignment.
16
15
14
13
12
Dwg. No. A-9594
7003
HIGH-VOLTAGE, HIGH-CURRENT
DARLINGTON ARRAY
Integrating seven high-voltage, high-current npn Darlingtons into
a monolithic power array, the ULN7003A AND ULN7003LW are
designed for interfacing between TTL or CMOS logic and a variety of
peripheral loads. The seven open-collector Darlington outputs are
specified for 135 V minimum breakdown and 90 V minimum sustaining. Included are integral power diodes for switching inductive loads.
Typical applications include relays, lamps, print heads and hammers,
solenoids, and level shifting to power discretes.
The ULN7003A/LW include input current-limiting resistors
compatible with the drive capabilities of TTL and (most) CMOS
operating at a nominal logic supply of 5 V. Operation with 12 V
CMOS may require additional input current limiting.
The high sustaining voltage rating of this power array makes it
ideal for inductive load applications where Zener diode flyback techniques are used. The increased flyback voltage provides a much faster
inductive load turn-off current decay that is especially useful with
dc stepper motors, solenoids, and print heads.
Output current may be limited by duty cycle,
number of drivers operating, ambient temperature, and heat sinking. Under any set of
conditions, do not exceed the specified maximum
current rating or a junction temperature of 150°C.
. . . . . . . . . . . . . 135 V
CEX
. . . . . . . . . . . . . . . . . . . 90 V
. . . . . . . . . . . . . . 300 mA
C
— April 2, 2001 —
LAST TIME BUY
Both devices are pinned with outputs opposite inputs to facilitate
ease of circuit board layout. The ULN7003A is supplied in a 16-pin
plastic dual in-line package with a copper lead frame to maximize
device power dissipation capabilities. The ULN7003LW is furnished
in a 16-lead small-outline wide-body package for surface-mount
applications.
FEATURES
■ 135 V Minimum Output Breakdown
■ 90 V Minimum Sustaining Voltage
■ 300 mA Output Current
■ Internal High-Current Clamp Diodes
■ Logic-Compatible Inputs
Always order by complete part number:
Part NumberPackage
ULN7003A16-Pin DIP
ULN7003LW16-Lead SOIC
7003
HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRAY
2.5
2.0
1.5
1.0
0.5
ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS
SUFFIX 'A', R = 60°C/W
SUFFIX 'LW', R = 80°C/W
0
25
θJA
θJA
5075100125150
AMBIENT TEMPERATURE IN °C
Dwg. GP-018B
A Zener diode can be used to increase the flyback
voltage. This gives a much faster inductive load turnOFF current decay. The maximum Zener voltage plus
the load supply voltage plus the internal diode forward
voltage must not exceed the device’s rated sustaining
voltage.
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 responsibility for its use; nor for any infringement of patents or other rights of
third parties which may result from its use.
7003
HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRAY
HIGH-VOLTAGE (≥60 V) PERIPHERAL POWER
AND DISPLAY DRIVERS
IN ORDER OF 1) OUTPUT VOLTAGE, 2) OUTPUT CURRENT, 3) NUMBER OF DRIVERS
Output Ratings*Features
SerialLatchedDiodeSaturatedInternal
VmA#InputDriversClampOutputs ProtectionPart Number †