Allegro UDQ2596A, UDN2597A, UDN2596A Datasheet
2596
8-CHANNEL
AND
2597
2596
SATURATED SINK DRIVERS
2597
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 saturated 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.
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.
AND
8-CHANNEL
SATURATED SINK DRIVERS
Low output-saturation voltages at high load currents are provided
The saturated (non-Darlington) NPN outputs provide low collector-
Data Sheet
29320.2B
Dwg. No. W-100
ABSOLUTE MAXIMUM RATINGS
at T
= + 25°C
A
OutputVoltage,VCE................................ 50 V
Output Current, I
(UDN2596A) ............................ 500 mA
(UDN2597A) ................................ 1.0 A
Supply Voltage, V
Input Voltage, V
Package Power Dissipation,
P
............................................. 2.27 W*
D
Operating Temperature Range,
T
................................. -20°C to +85°C
A
Storage Temperature Range,
TS.............................. - 65°C to +150°C
*Derate at the rate of 18.2 mW/°C above
T
= +25°C
A
OUT
............................ 7.0 V
CC
................................. 7.0 V
lN
Inputs require very low input current and are activated by a low
logic level consistent with the much greater sinking capability associated 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’.
FEATURES
■ Non-Inverting Function
■ Low Output ON Voltages
■ Up to 1.0 A Sink Capability
■ 50 V Min. Output Breakdown
■ Output Transient-Suppression
Diodes
■ Output Pull-Down for
Fast Turn-Off
■ TTL, CMOS Compatible Inputs
■ Automotive Capable
ONE OF EIGHT DRIVERS
Dwg. No. W-101
2596
AND
2597
8-CHANNEL
SATURATED SINK DRIVERS
ELECTRICAL CHARACTERISTICS at T
Characteristics Symbol Devices Test Conditions Min. Max. Units
Output Leakage Current I
Output Sustaining Voltage V
Output Saturation Voltage V
Clamp Diode Leakage Current I
Clamp Diode Forward Voltage V
Logic lnput Current I
Supply Current I
CEX
CE(sus)
CE(SAT)
R
F
lN(0)
I
lN(1)
CC(ON)
= +25°C, V
A
Applicable
Both V
UDN2596A l
UDN2597A l
UDN2596A l
UDN2597A l
Both VR = 50 V — 10 µA
UDN2596A IF = 300 mA — 1.8 V
UDN2597A IF = 750 mA — 1.8 V
UDN2956A VIN = 0.8 V — -15 µA
UDN2597A VIN = 0.8 V — -50 µA
Both VIN = 2.4 V — 10 µA
UDN2596A any one driver VIN = 0.8 V — 6.0 mA
UDN2597A any one driver VIN = 0.8 V — 31 mA
= 5.0 V
CC
Limits
= 50 V, VIN = 2.4 V — 10 µA
OUT
= 300 mA, L = 2 mH 35 — V
OUT
= 750 mA, L = 2 mH 35 — V
OUT
= 300 mA — 0.5 V
OUT
= 750 mA — 1.0 V
OUT
Turn-On Delay t
Turn-Off Delay t
TYPICAL APPLICATION
DUAL STEPPER MOTOR DRIVE
I
CC(OFF)
pd0
pd1
UDN2596A all drivers VIN = 2.4 V 0.75 1.3 mA
UDN2597A all drivers VIN = 2.4 V 0.75 15 mA
Both 0.5 EIN to 0.5 E
Both 0.5 EIN to 0.5 E
OUT
OUT
— 3.0 µs
— 2.0 µs
RECOMMENDED
OPERATING CONDITIONS
Type Number Logic I
UDN2596A 5.0 V 300 mA
UDN2597A 5.0 V 750 mA
Note: Pins 2 and 12 must both be connected to
power ground.
OUT
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1984, 1999, Allegro MicroSystems, Inc.
Loading...