ALLEGRO UDN2547EB

A2547
Protected Quad Driver
Last Time Buy
These parts are in production but have been determined to be
LAST TIME BUY. This classification indicates that the product is
obsolete and notice has been given. Sale of this device is currently
restricted to existing customer applications. The device should not be
purchased for new design applications because of obsolescence in the
near future. Samples are no longer available.
Date of status change: May 2, 2005
Deadline for receipt of LAST TIME BUY orders: October 28, 2005
Recommended Substitutions:
NOTE: For detailed information on purchasing options, contact your
local Allegro field applications engineer or sales representative.
Allegro MicroSystems, Inc. reserves the right to make, from time to time, revisions to the anticipated product life cycle plan for a
product to accommodate changes in production capabilities, alternative product availabilities, or market demand. 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.
Data Sheet
29317.4C*
2547
PROTECTED
QUAD POWER DRIVER
UDx2547B (DIP)
FAULT
1
16
IN 1
OUT1
2
15
IN2
OUT2
3
14
ENABLE
GROUND
4
13
GROUND
GROUND
5
12
GROUND
OUT3
6
11
SUPPLY
NO
CONNECT.
7
10
IN 3
OUT4
8
9
IN 4
V CC
Dwg. PP-018A
ABSOLUTE MAXIMUM RATINGS
at TA = 25°C
Output Voltage, VOUT ............................ 60 V
Over-Current Protected Output Voltage,
VOUT ............................................... 25 V
Output Current, IOUT .......................... 1.3 A*
FAULT Output Voltage, VF ................... 40 V
Supply Voltage, VCC ............................ 7.0 V
Input Voltage, VIN or VEN ...................... 7.0 V
Package Power Dissipation,
PD ........................................ See Graph
Operating Temperature Range, TA
Prefix ‘UDK’ ............... -40°C to +125°C
Prefix ‘UDN’ ................. -20°C to +85°C
Prefix ‘UDQ’ ................. -40°C to +85°C
Storage Temperature Range,
TS ............................... -55°C to +150°C
*Outputs are current limited at approximately
1.3 A per driver and junction temperature limited
if current in excess of 1.3 A is attempted. See
Circuit Description and Application for further
information.
Providing interface between low-level logic and power loads, the
UDK/UDN/UDQ2547B and UDK/UDN/UDQ2547EB quad power
drivers combine logic gates and high-current bipolar outputs with
complete output protection. Each of the four outputs will sink 600 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 and include internal
pull-down resistors to ensure that the outputs remain OFF if the inputs
are open-circuited.
Over-current protection for each channel has been designed into
these devices and is activated at approximately 1.3 A. It protects each
output from short circuits with supply voltages up to 25 V. When a
maximum driver output current is reached, that output drive is reduced
linearly, maintaining a constant load current. If the over-current or
short circuit condition continues, each channel has an independent
thermal limit circuit which will sense the rise in junction temperature
and turn OFF the individual channel that is at fault. Foldback circuitry
decreases the output current if excessive voltage is present across the
output and assists in keeping the device within its SOA (safe operating
area).
Each output also includes diagnostics for increased device protection. If any output is shorted or opened, the diagnostics can signal the
controlling circuitry through a common FAULT pin.
These devices can be used to drive various resistive loads including incandescent lamps (without warming or limiting resistors). With
the addition of external output clamp diodes, they can be used to drive
inductive loads such as relays, solenoids, or dc stepping motors.
The suffix ‘B’ devices are 16-pin power DIPs while the suffix ‘EB’
devices are 28-lead power PLCCs for surface-mount applications.
Both packages are of batwing construction to provide for maximum
package power dissipation.
FEATURES
■
■
■
■
■
Output SOA Protection
■ Low Output-Saturation Voltage
Diagnostic FAULT Output ■ TTL and 5 V CMOS Compatible Inputs
Independent Over-Current Protection for Each Driver
Independent Thermal Protection for Each Driver
600 mA Output Current per Channel
Always order by complete part number: a prefix to indicate operating temperature range + the basic four-digit part number + a suffix to
indicate package style, e.g., UDK2547EB .
2547
PROTECTED
QUAD POWER DRIVER
R
θJT
= 6°C/W
FAULT
IN 1
IN 2
ENABLE
28
27
26
OUT1
2
1
NO
CONNECTION
OUT2
4
8
NC
GROUND
5
25
GROUND
FAULT
6
4
SUFFIX 'EB', R
θJA
6
24
7
23
8
22
9
21
10
20
11
19
= 36°C/W
2
GROUND
SUFFIX 'B', R θJA = 43°C/W
14
15
16
17
18
IN 4
IN 3
SUPPLY
Dwg. GP-004-1A
Dwg. PP-019
FUNCTIONAL BLOCK DIAGRAM
FAULT
ABLE
COMMON CONTROL
ONE OF FOUR DRIVERS
OUTN
IN N
THERMAL
SHUTDOWN
GROUND
VCC
NC
NO
CONNECTION
150
OUT 4
125
13
75
100
TEMPERATURE IN °C
12
25
50
NO
CONNECTION
NC
0
OUT 3
ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS
10
3
UDx2547EB (PLCC)
CURRENT
LIMIT
<<1 Ω
Dwg. FP-007
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1989, 2002 Allegro MicroSystems, Inc.
2547
PROTECTED
QUAD POWER DRIVER
ELECTRICAL CHARACTERISTICS at TA = +25°C (prefix ‘UDN’) or over operating
temperature range (prefix ‘UDK’ or ‘UDQ’), VCC = 4.75 V to 5.5 V
Characteristic
Symbol
Output Leakage Current*
IOUT
Limits
Typ.
Max.
Test Conditions
Min.
Units
VOUT = 60 V, VIN = 0.8 V, VEN = 2.0 V
—
30
150
µA
VOUT = 60 V, VIN = 2.0 V, VEN = 0.8 V
—
30
150
µA
V
Output Sustaining Voltage
VOUT(SUS)
IOUT = 100 mA, VIN = 0.8 V, VCC = Open
40
—
—
Output Saturation Voltage
VOUT(SAT)
IOUT = 400 mA
—
—
300
mV
IOUT = 500 mA
—
—
400
mV
IOUT = 600 mA
—
—
550
mV
Over-Current Limit
IOUT
5 ms PulseTest, VOUT = 5.0 V
—
1. 3
1.7
A
Input Voltage
Logic 1
VIN(1) or VEN(1)
2.0
—
—
V
Logic 0
VlN(0) or VEN(0)
—
—
0.8
V
Logic 1
VIN(1) or VEN(1) = 2.0 V
—
—
60
µA
Logic 0
VIN(0) or VEN(0) = 0.8 V
10
—
—
µA
Fault Output Leakage Current
IF
VF = 40 V
—
<1.0
2.0
µA
Fault Output Current
IF
VIN = 0.8 V, VEN = 2.0 V
40
60
80
µA
Input Current
VF = 40 V, Driver Outputs Open,
Fault Output Saturation Voltage
VF(SAT)
IF = 30 µA
—
0.1
0.4
V
Total Supply Current
ICC
All Outputs ON
—
45
50
mA
All Outputs OFF
—
6.0
10
mA
Thermal Shutdown
TJ
—
165
—
°C
Thermal Hysteresis
∆TJ
—
15
—
°C
Typical Data is for design information only.
*Measurement includes XOR input current
and other elements.
TRUTH TABLE
STATUS
INN
ENABLE
OUTN
FAULT
Normal Load
H
L
X
H
H
L
L
H
H
H
H
H
Over-Current or
Short to Supply
H
H
R
L
Thermal Fault
H
H
H
L
Open Load or
Short to Ground
L
H
L
L
X = Don’t care.
R = Linear drive, current limited.
2547
PROTECTED
QUAD POWER DRIVER
CIRCUIT DESCRIPTION AND APPLICATION
NORMAL LAMP IN-RUSH CURRENT
LAMP CURRENT
NOT TO SCALE
These devices monitor their outputs for open or shorted conditions.
Both conditions are sensed by comparing the input and output states.
Note that the FAULT output is operational only if the ENABLE input is
high. When a fault condition is sensed, the FAULT output will go to a
low state. An external FAULT output filter capacitor (0.1µF) is recommended to eliminate erroneous switching.
INCANDESCENT LAMP DRIVER
SHORT CIRCUIT
CURRENT LIMIT
THERMAL SHUTDOWN
THERMAL HYSTERESIS
TIME
Dwg. WP-005A
High incandescent lamp turn-ON/in-rush currents can contribute to
poor lamp reliability and destroy semiconductor lamp drivers.
Warming (parallel) or current-limiting (series) resistors protect both
driver and lamp but use significant power either when the lamp is OFF
or when the lamp is ON, respectively. Lamps with steady-state current
ratings up to 600 mA can be driven without the need for warming or
current-limiting resistors, if lamp turn-ON time is not a concern.
When an incandescent lamp is initially turned ON, the cold filament
is at minimum resistance and would normally allow a 10x to 12x in-rush
current. With these drivers, during turn-ON, the high in-rush current is
sensed by the internal low-value sense resistor, drive current to the
output stage is diverted by the shunting transistor, the output stage
operates in a linear mode, and the load current is limited to approximately 1.3 A. During lamp warmup, the filament resistance increases
to its maximum value, the output driver goes into saturation and applies
maximum rated voltage to the lamp.
INDUCTIVE LOAD DRIVER
With the addition of external clamp diodes, bifilar (unipolar)
stepper motors and other inductive loads can be driven directly.
The external diodes prevent damage to the output transistors by
suppressing the high-voltage spikes that occur when turning
OFF an inductive load. For rapid current decay (fast turn-OFF speeds),
the use of Zener diodes will raise the flyback voltage and improve
performance. However, the peak voltage must not exceed the specified minimum sustaining voltage (VSUPPLY + VZ + VF ≤ VOUT(SUS)).
OVER-CURRENT CONDITIONS
In the event of a shorted load, or stalled motor, the load current
will attempt to increase. As described above, the drive current to the
affected output stage is linearly reduced (limiting the load current to
about 1.3 A), causing the output stage to go linear. As the junction
temperature of the output stage increases, the thermal shutdown circuit
will shut OFF the affected output. If the fault condition is corrected, the
output driver will return to its normal saturated condition.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
2547
PROTECTED
QUAD POWER DRIVER
UDN2547B and UDQ2547B
Dimensions in Inches
(controlling dimensions)
16
0.020
0.008
9
NOTE 4
0.430
MAX
0.280
0.240
0.300
BSC
1
0.070
0.045
0.100
0.775
0.735
8
0.005
BSC
MIN
0.210
MAX
0.015
0.150
0.115
MIN
0.022
0.014
Dwg. MA-001-17A in
Dimensions in Millimeters
(for reference only)
16
0.508
0.204
9
NOTE 4
10.92
MAX
7.11
6.10
7.62
BSC
1
1.77
1.15
2.54
19.68
18.67
8
BSC
0.13
MIN
5.33
MAX
0.39
3.81
2.93
MIN
0.558
0.356
NOTES: 1.
2.
3.
4.
Exact body and lead configuration at vendor’s option within limits shown.
Lead spacing tolerance is non-cumulative
Lead thickness is measured at seating plane or below.
Webbed lead frame. Leads 4, 5, 12, and 13 are internally one piece.
Dwg. MA-001-17A mm
2547
PROTECTED
QUAD POWER DRIVER
UDN2547EB and UDQ2547EB
Dimensions in Inches
(controlling dimensions)
18
0.013
0.021
12
19
0.219
0.191
11
0.026
0.032
0.456
0.450
INDEX AREA
0.495
0.485
0.050
BSC
0.219
0.191
25
5
26
0.020
28
1
4
0.456
0.450
0.495
0.485
MIN
0.165
0.180
Dwg. MA-005-28A in
Dimensions in Millimeters
(for reference only)
18
0.331
0.533
12
19
5.56
4.85
11
0.812
0.661
11.58
11.43
12.57
12.32
1.27
INDEX AREA
BSC
5.56
4.85
25
5
26
0.51
MIN
4.57
4.20
28
1
4
11.582
11.430
12.57
12.32
NOTES: 1. Exact body and lead configuration at vendor’s option within limits shown.
2. Lead spacing tolerance is non-cumulative
3. Webbed lead frame. Leads 5 through 11 and 19 through 25 are internally one piece.
Dwg. MA-005-28A mm
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
2547
PROTECTED
QUAD POWER DRIVER
The products described here are manufactured under one or more U.S. patents or
U.S. patents pending.
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 performance, reliability, or manufacturability of its products. Before placing
an order, the user is cautioned to verify that the information being relied upon is
current.
Allegro products are not authorized for use as critical components in life-support
devices or systems without express written approval.
The information included herein is believed to be accurate and reliable. However,
Allegro MicroSystems, Inc. assumes no responsibility for its use; nor for any infringement of patents or other rights of third parties which may result from its use.
2547
PROTECTED
QUAD POWER DRIVER
POWER SINK DRIVERS
IN ORDER OF 1) OUTPUT CURRENT, 2) OUTPUT VOLTAGE, 3) NUMBER OF DRIVERS
Output Ratings *
mA
V
#
Serial
Input
Latched
Drivers
Features
Diode
Clamp
Outputs
Internal
Protection
75
Part Number
†
17
8
X
X
–
constant current
–
6275
17
16
X
X
–
constant current
–
6276
100
20
8
–
–
–
saturated
–
2595
30
32
X
X
–
–
–
5833
40
32
X
X
–
saturated
–
5832
50
8
addressable decoder/driver
DMOS
–
6B259
50
8
–
X
–
DMOS
–
6B273
50
8
X
X
–
DMOS
–
6B595
120
24
8
X
X
–
constant current
–
6277
250
50
8
addressable decoder/driver
DMOS
–
6259
50
8
–
X
–
DMOS
–
6273
50
8
X
X
–
DMOS
–
6595
50
8
–
–
X
saturated
–
2596
60
4
–
–
X
saturated
X
2557
350
50
4
–
X
X
–
–
5800
50
7
–
–
X
–
–
2003
50
7
–
–
X
–
–
2004
50
8
–
–
X
–
–
2803
50
8
–
X
X
–
–
5801
50
8
X
X
–
–
–
5821
50
8
X
X
X
–
–
5841
50
8
addressable decoder/driver
DMOS
–
6A259
50
8
X
X
–
DMOS
–
6A595
80
8
X
X
–
–
–
5822
80
8
X
X
X
–
–
5842
95
7
–
–
X
–
–
2023
95
7
–
–
X
–
–
2024
450
30
28
dual 4- to 14-line decoder/driver
–
–
6817
600
60
4
–
–
–
saturated
X
2547
60
4
–
–
X
saturated
X
2549 and 2559
700
60
4
–
–
X
saturated
X
2543
750
50
8
–
–
X
saturated
–
2597
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
1800
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
* 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