2596
AND
2597
8-CHANNEL
SATURATED SINK DRIVERS
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.
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'.
ONE OF EIGHT DRIVERS
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
Dwg. No. W-100
Dwg. No. W-101
Data Sheet
29320.2B
FEATURES
s
Non-Inverting Function
s
Low Output ON Voltages
s
Up to 1.0 A Sink Capability
s
50 V Min. Output Breakdown
s
Output Transient-Suppression
Diodes
2596
AND
2597
s
Output Pull-Down for
Fast Turn-Off
s
TTL, CMOS Compatible Inputs
s
Automotive Capable
2596
AND
2597
8-CHANNEL
SATURATED SINK DRIVERS
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Limits
Characteristics
Symbol
Devices
Test Conditions
Min.
Max.
Units
Output Leakage Current
I
CEX
Both
V
OUT
= 50 V, V
IN
= 2.4 V
--
10
A
Output Sustaining Voltage
V
CE(sus)
UDN2596A
l
OUT
= 300 mA, L = 2 mH
35
--
V
UDN2597A
l
OUT
= 750 mA, L = 2 mH
35
--
V
Output Saturation Voltage
V
CE(SAT)
UDN2596A
l
OUT
= 300 mA
--
0.5
V
UDN2597A
l
OUT
= 750 mA
--
1.0
V
Clamp Diode Leakage Current
I
R
Both
V
R
= 50 V
--
10
A
Clamp Diode Forward Voltage
V
F
UDN2596A
I
F
= 300 mA
--
1.8
V
UDN2597A
I
F
= 750 mA
--
1.8
V
Logic lnput Current
I
lN(0)
UDN2956A
V
IN
= 0.8 V
--
-15
A
UDN2597A
V
IN
= 0.8 V
--
-50
A
I
lN(1)
Both
V
IN
= 2.4 V
--
10
A
Supply Current
I
CC(ON)
UDN2596A
any one driver V
IN
= 0.8 V
--
6.0
mA
UDN2597A
any one driver V
IN
= 0.8 V
--
31
mA
I
CC(OFF)
UDN2596A
all drivers V
IN
= 2.4 V
0.75
1.3
mA
UDN2597A
all drivers V
IN
= 2.4 V
0.75
15
mA
Turn-On Delay
t
pd0
Both
0.5 E
IN
to 0.5 E
OUT
--
3.0
s
Turn-Off Delay
t
pd1
Both
0.5 E
IN
to 0.5 E
OUT
--
2.0
s
Applicable
ELECTRICAL CHARACTERISTICS at T
A
= +25
C, V
CC
= 5.0 V
Copyright 1984, 1999, Allegro MicroSystems, Inc.
RECOMMENDED
OPERATING CONDITIONS
Type Number
Logic
I
OUT
UDN2596A
5.0 V
300 mA
UDN2597A
5.0 V
750 mA
Note: Pins 2 and 12 must both be connected to
power ground.
TYPICAL APPLICATION
DUAL STEPPER MOTOR DRIVE
2596
AND
2597
8-CHANNEL
SATURATED SINK DRIVERS
0.014
0.008
0.300
BSC
Dwg. MA-001-20 in
0.430
MAX
20
1
10
0.280
0.240
0.210
MAX
0.070
0.045
0.015
MIN
0.022
0.014
0.100
BSC
0.005
MIN
0.150
0.115
11
1.060
0.980
0.355
0.204
7.62
BSC
Dwg. MA-001-20 mm
10.92
MAX
20
1
10
7.11
6.10
5.33
MAX
1.77
1.15
0.39
MIN
0.558
0.356
2.54
BSC
0.13
MIN
3.81
2.93
11
26.92
24.89
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
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.
Dimensions in Inches
(controlling dimensions)
Dimensions in Millimeters
(for reference only)
2596
AND
2597
8-CHANNEL
SATURATED SINK DRIVERS
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
POWER SINK DRIVERS
SELECTION GUIDE
IN ORDER OF 1) OUTPUT CURRENT, 2) OUTPUT VOLTAGE, 3) NUMBER OF DRIVERS
Output Ratings *
Features
Serial
Latched
Diode
Saturated
Internal
mA
V
#
Input
Drivers
Clamp
Outputs
Protection
Part Number
100
20
8
X
2595
30
32
X
X
5833
40
32
X
X
X
5832
250
135
7
X
7003
300
45
1
Hall Sensor/Driver
X
X
5140
50
7
X
2003
50
8
X
2803
50
8
X
X
2596
60
2
Hall Sensor/Driver
X
5275
60
4
X
X
X
2557
95
7
X
2023
95
8
X
2823
350
50
4
X
X
5800
50
7
X
2004
50
8
X
2804
50
8
X
X
5801
50
8
X
X
5821
80
8
X
X
5822
50
8
X
X
X
5841
80
8
X
X
X
5842
95
7
X
2024
95
8
X
2824
450
30
28
Dual 4 to 14-Line Decoder/Driver
6817
600
60
4
X
X
2547
60
4
X
X
X
2549
700
60
4
X
X
X
2543 and 2559
750
50
8
X
X
2597
900
14
2
Hall Sensor/Driver
X
X
X
3625
26
2
Hall Sensor/Driver
X
X
X
3626
1000
46
4
Stepper Motor Controller/Driver
MOS
7024 and 7029
1200
46
4
Microstepping Controller/Driver
MOS
7042
1250
50
4
Stepper Motor Translator/Driver
X
5804
50
4
X
2064 and 2068
1500
80
4
X
2065 and 2069
1600
50
9
X
X
X
5829
1800
50
4
X
2544
50
4
X
2540
3000
46
4
Stepper Motor Controller/Driver
MOS
7026
46
4
Microstepping Controller/Driver
MOS
7044
4000
50
4
X
2878
80
4
X
2879
*
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.
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