7003 반도체 회로 부품 판매점
HIGH-VOLTAGE/ HIGH-CURRENT DARLINGTON ARRAY
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 Allegro MicroSystems |
7003
HIGH-VOLTAGE, HIGH-CURRENT
DARLINGTON ARRAY
Integrating seven high-voltage, high-current npn Darlingtons into
1 16 a monolithic power array, the ULN7003A AND ULN7003LW are
designed for interfacing between TTL or CMOS logic and a variety of
2 15 peripheral loads. The seven open-collector Darlington outputs are
specified for 135 V minimum breakdown and 90 V minimum sustain-
3 14 ing. Included are integral power diodes for switching inductive loads.
4 13 Typical applications include relays, lamps, print heads and hammers,
solenoids, and level shifting to power discretes.
5 12
The ULN7003A/LW include input current-limiting resistors
6 11 compatible with the drive capabilities of TTL and (most) CMOS
7 10
89
Dwg. No. A-9594
Note the ULN7003A (DIP) and the ULN7003LW
(SOIC) are electrically identical and share a
BUYoperating 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 tech-
niques are used. The increased flyback voltage provides a much faster
inductive load turn-off current decay that is especially useful with
common terminal number assignment.
IME 01 —ABSOLUTE MAXIMUM RATINGS
0at TA = +25°C
T , 2Output Voltage, VCEX . . . . . . . . . . . . . 135 V
2Output Sustaining Voltage,
T rilVCE(sus) . . . . . . . . . . . . . . . . . . . 90 V
Output Current, IC . . . . . . . . . . . . . . 300 mA
S pInput Current, IIN . . . . . . . . . . . . . . . . 25 mA
APackage Power Dissipation,
APD . . . . . . . . . . . . . . . . . . See Graph
L —Operating Temperature Range,
dc stepper motors, solenoids, and print heads.
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
I 135 V Minimum Output Breakdown
I 90 V Minimum Sustaining Voltage
I 300 mA Output Current
I Internal High-Current Clamp Diodes
I Logic-Compatible Inputs
TA . . . . . . . . . . . . . . . -20°C to +85°C
Storage Temperature Range,
TS . . . . . . . . . . . . . . - 55°C to +150°C
Output current may be limited by duty cycle,
number of drivers operating, ambient tem-
perature, and heat sinking. Under any set of
conditions, do not exceed the specified maximum
current rating or a junction temperature of 150°C.
Always order by complete part number:
Part Number
Package
ULN7003A
16-Pin DIP
ULN7003LW
16-Lead SOIC
7003
HIGH-VOLTAGE,
HIGH-CURRENT
DARLINGTON ARRAY
2.5
2.0 SUFFIX 'A', R θJA = 60°C/W
1.5
1.0
SUFFIX 'LW', R = 80°C/W
θJA
0.5
0
25
50
75
100 125
150
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 turn-
OFF 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.
VCC + VZ + VF
V CC
V CC + VF
V CE(SAT)
I OUT
I CEX
ZENER CLAMP
DIODE CLAMP
Dwg. WP-001
PARTIAL SCHEMATIC
(one of seven drivers)
COM
2.7K
7.2K 3K
Dwg. No. A-9651
SWITCHING DELAY TEST CIRCUIT
Vin
50%
0
50%
t pd
TURN ON
t pd
TURN OFF
V out
50%
50%
Vin = 3.5 V for ULN7003A
Dwg. WP-010
Dwg. No. WP-010
PULSE
GENERATOR
PRR = 10 kHz
DC = 50%
V in
93 Ω
50 Ω
V CC
IC
50 pF
V out
Dwg. EP-020
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1985, 2000 Allegro MicroSystems, Inc.
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