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UDK2559 Datasheet Preview

UDK2559 Datasheet

PROTECTED QUAD POWER DRIVER

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2559
Protected Quad Power Driver
Features and Benefits
700 mA output current per channel
Independent overcurrent protection for each driver
Thermal protection for device and each driver
Low output-saturation voltage
Integral output flyback diodes
TTL and 5 V CMOS-compatible inputs
Packages:
16-pin DIP
with exposed thermal tabs
(B package)
28-pin PLCC
(Package EB)
Not to scale
16-pin SOICW
with internally fused pins
(LB package)
Description
Providing improved output current limiting, the UDK,
UDN, and UDQ2559B, EB, and LB quad power drivers
combine AND logic gates and high-current bipolar outputs
with complete output protection. Each of the four outputs
sink 700 mA in the on state. The outputs have a minimum
breakdown voltage (load dump) of 60 V and a sustaining
voltage of 40 V. The inputs are compatible with TTL and
5 V CMOS logic systems.
Overcurrent protection for each channel has been designed
into these devices and is activated at approximately 1 A. It
protects each output from short circuits with supply voltages
up to 25 V. When an output current trip point is reached, that
output stage is driven linearly resulting in a reduced output
current level. If an over-current or short-circuit condition
continues, the thermal-limiting circuits will first sense the rise
in junction temperature and then the rise in chip temperature,
further decreasing the output current. Under worst-case
conditions, these devices will tolerate short circuits on all
outputs, simultaneously.
These devices can be used to drive various loads including
incandescent lamps (without warming or limiting resistors)
or inductive loads such as relays, solenoids, or dc stepping
motors.
The packages offer fused leads for enhanced thermal dissipation.
Package B is a 16-pin power DIP with exposed tabs, EB is a
28-lead power PLCC, and LB is a 16-lead power wide-body
SOIC for surface-mount applications. They are lead (Pb) free
with 100% matte tin leadframe plating.
ENABLE
INN
Functional Block Diagram
(1 of 4 Channels)
VCC
K
OUTN
Thermal
Limit
<< 1Ω
29317.14L




Allegro MicroSystems

UDK2559 Datasheet Preview

UDK2559 Datasheet

PROTECTED QUAD POWER DRIVER

No Preview Available !

2559
Protected Quad Power Driver
Selection Guide
Part Number
Package
UDN2559B-T
UDN2559EBTR-T
UDQ2559LBTR-T
UDK2559B-T
UDK2559EBTR-T
UDK2559LBTR-T
16-pin DIP, exposed tabs
28-lead PLCC
16-lead SOIC
16-pin DIP, exposed tabs
28-lead PLCC
16-lead SOIC
Packing
25 per tube
800 per reel
1000 per reel
25 per tube
800 per reel
1000 per reel
Ambient Temperature
(°C)
–20 to 85
–40 to 85
–40 to 125
Absolute Maximum Ratings
Characteristic
Supply Voltage
Input Voltage Range
Output Voltage
Overcurrent-Protected Output Voltage
Output Current
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
Symbol
VCC
VIN, VEN
VOUT
VOUT(P)
IOUT
TA
TJ(max)
Tstg
Notes
Outputs are peak current limited at approxi-
mately 1.0 A per driver. See Circuit Description
and Application section for further information.
Range K
Range N
Range Q
Rating
7
7
60
25
1.0
–40 to 125
–20 to 85
–40 to 85
150
–55 to 150
Units
V
V
V
V
A
ºC
ºC
ºC
ºC
ºC
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
2


Part Number UDK2559
Description PROTECTED QUAD POWER DRIVER
Maker Allegro MicroSystems
Total Page 8 Pages
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