2596
AND
2597
8-CHANNEL
SATURATED SINK DRIVERS
2596
AND
2597
8-CHANNEL
SATURATED SINK DRIVERS
Low output-saturation voltages at high load currents are provided
by UDN2596A and UDN2597A sink driver ICs. These devices can be
used as interface buffers between standard low-power digital logic
(particularly MOS) and high-power loads such as relays, solenoids,
stepping motors, and LED or incandescent displays. The eight satu-
rated sink drivers in each device feature high-voltage, high-current
open-collector outputs. Transient suppression clamp diodes and a
minimum 35 V output sustaining voltage allow their use with many
inductive loads.
The saturated (non-Darlington) NPN outputs provide low collector-
emitter voltage drops as well as improved turn-off times due to an
active pull-down function within the output predrive section. The
UDN2596A is for use with output loads to 500 mA while the
UDN2597A is for use with loads to 1 A. Adjacent outputs may be
paralleled for higher load currents.
Inputs require very low input current and are activated by a low
logic level consistent with the much greater sinking capability associ-
ated with NMOS, CMOS, and TTL logic. The UDN2596A and
UDN2597A are rated for use with 5 V logic levels.
Data Sheet
29320.2B
Dwg. No. W-100
Both devices are furnished in 20-pin DIP packages with copper
leadframes for improved thermal characteristics. The UDN2596A is
also available for operation between -40°C and +85°C. To order,
change the prefix from ‘UDN’ to ‘UDQ’.
FEATURES
ABSOLUTE MAXIMUM RATINGS
at T
A
= + 25
°
C
OutputVoltage,V
CE
................................ 50 V
Output Current, I
OUT
(UDN2596A)
............................ 500 mA
(UDN2597A)
................................ 1.0 A
Supply Voltage, V
CC
............................ 7.0 V
Input Voltage, V
lN
................................. 7.0 V
Package Power Dissipation,
P
D
............................................. 2.27 W*
Operating Temperature Range,
T
A
................................. -20
°
C to +85
°
C
Storage Temperature Range,
T
S
.............................. - 65
°
C to +150
°
C
*Derate at the rate of 18.2 mW/°C above
T
A
= +25°C
s
s
s
s
s
Non-Inverting Function
Low Output ON Voltages
Up to 1.0 A Sink Capability
50 V Min. Output Breakdown
Output Transient-Suppression
Diodes
s
Output Pull-Down for
Fast Turn-Off
s
TTL, CMOS Compatible Inputs
s
Automotive Capable
ONE OF EIGHT DRIVERS
Dwg. No. W-101
2596
AND
2597
8-CHANNEL
SATURATED SINK DRIVERS
ELECTRICAL CHARACTERISTICS at T
A
= +25
°
C, V
CC
= 5.0 V
Limits
Characteristics
Output Leakage Current
Output Sustaining Voltage
Symbol
I
CEX
V
CE(sus)
Applicable
Devices
Both
UDN2596A
UDN2597A
Output Saturation Voltage
V
CE(SAT)
UDN2596A
UDN2597A
Clamp Diode Leakage Current
Clamp Diode Forward Voltage
I
R
V
F
Both
UDN2596A
UDN2597A
Logic lnput Current
I
lN(0)
UDN2956A
UDN2597A
I
lN(1)
Supply Current
I
CC(ON)
Both
UDN2596A
UDN2597A
I
CC(OFF)
UDN2596A
UDN2597A
Turn-On Delay
Turn-Off Delay
t
pd0
t
pd1
Both
Both
Test Conditions
V
OUT
= 50 V, V
IN
= 2.4 V
l
OUT
= 300 mA, L = 2 mH
l
OUT
= 750 mA, L = 2 mH
l
OUT
= 300 mA
l
OUT
= 750 mA
V
R
= 50 V
I
F
= 300 mA
I
F
= 750 mA
V
IN
= 0.8 V
V
IN
= 0.8 V
V
IN
= 2.4 V
any one driver V
IN
= 0.8 V
any one driver V
IN
= 0.8 V
all drivers V
IN
= 2.4 V
all drivers V
IN
= 2.4 V
0.5 E
IN
to 0.5 E
OUT
0.5 E
IN
to 0.5 E
OUT
Min.
—
35
35
—
—
—
—
—
—
—
—
—
—
0.75
0.75
—
—
Max.
10
—
—
0.5
1.0
10
1.8
1.8
-15
-50
10
6.0
31
1.3
15
3.0
2.0
Units
µA
V
V
V
V
µA
V
V
µA
µA
µA
mA
mA
mA
mA
µs
µs
TYPICAL APPLICATION
DUAL STEPPER MOTOR DRIVE
RECOMMENDED
OPERATING CONDITIONS
Type Number
UDN2596A
UDN2597A
Logic
5.0 V
5.0 V
I
OUT
300 mA
750 mA
Note: Pins 2 and 12 must both be connected to
power ground.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1984, 1999, Allegro MicroSystems, Inc.
2596
AND
2597
8-CHANNEL
SATURATED SINK DRIVERS
Dimensions in Inches
(controlling dimensions)
0.014
0.008
20
11
0.430
0.280
0.240
MAX
0.300
BSC
1
0.070
0.045
0.100
1.060
0.980
BSC
10
0.005
MIN
0.210
MAX
0.015
MIN
0.150
0.115
0.022
0.014
Dwg. MA-001-20 in
Dimensions in Millimeters
(for reference only)
20
11
0.355
0.204
10.92
7.11
6.10
MAX
7.62
BSC
1
1.77
1.15
2.54
26.92
24.89
BSC
10
0.13
MIN
5.33
MAX
0.39
MIN
3.81
2.93
0.558
0.356
NOTES: 1. Exact body and lead configuration at vendor’s option within limits shown.
2. Lead spacing tolerance is non-cumulative.
3. Lead thickness is measured at seating plane or below.
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
Dwg. MA-001-20 mm
design of its products.
The information included herein is believed
to be accurate and reliable. However, Allegro
MicroSystems, Inc. assumes no responsibility
for its use; nor for any infringements of patents
or other rights of third parties which may result
from its use.
2596
AND
2597
8-CHANNEL
SATURATED SINK DRIVERS
POWER SINK DRIVERS
SELECTION GUIDE
IN ORDER OF 1) OUTPUT CURRENT, 2) OUTPUT VOLTAGE, 3) NUMBER OF DRIVERS
Output Ratings *
mA
100
Features
Serial
Latched
Diode
Saturated
Input
Drivers
Clamp
Outputs
–
–
–
X
X
X
–
–
X
X
–
X
–
–
X
–
Hall Sensor/Driver X
–
–
–
X
–
–
–
X
–
–
–
X
X
Hall Sensor/Driver –
X
–
–
X
X
–
–
X
–
–
–
X
–
–
X
X
–
–
–
X
–
–
–
X
–
–
X
X
–
X
X
–
–
X
X
–
–
X
X
X
–
X
X
X
–
–
–
X
–
–
–
X
–
Dual 4 to 14-Line Decoder/Driver
–
–
–
–
X
–
–
X
X
–
–
X
X
–
–
X
X
Hall Sensor/Driver X
X
Hall Sensor/Driver X
X
Stepper Motor Controller/Driver MOS
Microstepping Controller/Driver MOS
Stepper Motor Translator/Driver
–
–
–
X
–
–
–
X
–
X
X
–
–
–
–
X
–
–
–
X
–
Stepper Motor Controller/Driver MOS
Microstepping Controller/Driver MOS
–
–
X
–
–
–
X
–
Internal
Protection
–
–
–
–
X
–
–
–
–
X
–
–
–
–
–
–
–
–
–
–
–
–
–
X
X
X
–
X
X
–
–
X
–
–
X
–
–
–
–
–
–
V
20
30
40
135
45
50
50
50
60
60
95
95
50
50
50
50
50
80
50
80
95
95
30
60
60
60
50
14
26
46
46
50
50
80
50
50
50
46
46
50
80
#
8
32
32
7
1
7
8
8
2
4
7
8
4
7
8
8
8
8
8
8
7
8
28
4
4
4
8
2
2
4
4
4
4
4
9
4
4
4
4
4
4
Part Number
2595
5833
5832
7003
5140
2003
2803
2596
5275
2557
2023
2823
5800
2004
2804
5801
5821
5822
5841
5842
2024
2824
6817
2547
2549
2543 and 2559
2597
3625
3626
7024 and 7029
7042
5804
2064 and 2068
2065 and 2069
5829
2544
2540
7026
7044
2878
2879
†
250
300
350
450
600
700
750
900
1000
1200
1250
1500
1600
1800
3000
4000
*
Current is maximum specified test condition, voltage is maximum rating. See specification for sustaining voltage limits or
over-current protection voltage limits.
† Complete part number includes additional characters to indicate operating temperature range and package style.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
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