Download 2559 protected quad power drivers

2559
PROTECTED
QUAD POWER DRIVERS
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 will 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.
UDx2559LB
16
1
UDx2559B
OUT4
1
16
IN 4
K
2
15
IN3
OUT3
3
14
ENABLE
GROUND
4
13
GROUND
GROUND
5
12
GROUND
OUT2
6
11
V CC
K
7
10
IN 2
OUT1
8
9
IN 1
Dwg. PP-017-1
ABSOLUTE MAXIMUM RATINGS
at TA = 25°C
Output Voltage, VOUT . . . . . . . . . . . . . 60 V
Over-Current Protected Output Voltage,
VOUT . . . . . . . . . . . . . . . . . . . . . . 25 V
Output Current, IOUT . . . . . . . . . . . . . 1.0 A*
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 peak current limited at approximately 1.0 A per driver. See Circuit Description
and Application for further information.
Over-current 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 shortcircuit 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 suffix ‘B’ devices are 16-pin power DIPs, the suffix ‘EB’
devices are 28-lead power PLCCs and suffix ‘LB’ devices are 16-lead
power SOICs for surface-mount applications. All three packages are
of batwing construction to provide for maximum package power
dissipation.
FEATURES
■
■
■
■
■
■
■
700 mA Output Current per Channel
Independent Over-Current 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
Pin-Compatible With UDQ2543B/EB and UDK2549B/EB
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., UDK2559LB .
Data Sheet
29317.14*
2559
PROTECTED
QUAD POWER DRIVERS
2559
PROTECTED
QUAD POWER DRIVERS
FUNCTIONAL BLOCK DIAGRAM
(1 of 4 Channels)
K
V CC
OUTN
ENABLE
IN N
THERMAL
LIMIT
<<1 Ω
Dwg. FP-041
NC
25
6
24
7
23
8
22
9
21
10
20
11
19
GROUND
18
SUPPLY
17
IN 3
16
IN 4
14
15
NO
CONNECTION
K
OUT 4
13
GROUND
VCC
NC
12
GROUND
5
OUT 3
GROUND
ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS
ENABLE
26
IN 2
27
IN 1
28
1
NO
CONNECTION
OUT1
2
OUT2
4
3
K
UDx2559EB
5
R θJT = 6°C/W
4
SUFFIX 'EB', R θJA = 36°C/W
3
SUFFIX 'B', R
θJA
= 43°C/W
2
1
SUFFIX 'LB', R θJA = 63°C/W
0
25
50
75
100
TEMPERATURE IN °C
125
150
Dwg. GP-004-2A
Dwg. PP-019-1
PD = (VOUT1 x IOUT1 x dc) + … + (VOUTn x IOUTn x dc)
+ (VCC x ICC) = (TJ - T A)/RθJA
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1995, 1997 Allegro MicroSystems, Inc.
2559
PROTECTED
QUAD POWER DRIVERS
ELECTRICAL CHARACTERISTICS at TA = +25°C (prefix ‘UDN’) or over operating
temperature range (prefix ‘UDK’ or ‘UDQ’), VCC = 4.75 V to 5.25 V
Limits
Characteristic
Output Leakage Current
Symbol
ICEX
Test Conditions
Min.
Typ.
Max.
Units
VOUT = 60 V, VIN = 0.8 V, VEN = 2.0 V
—
<1.0
100
µA
VOUT = 60 V, VIN = 2.0 V, VEN = 0.8 V
—
<1.0
100
µA
Output Sustaining Voltage
VOUT(SUS)
IOUT = 100 mA, VIN = VEN = 0.8 V
40
—
—
V
Output Saturation Voltage
VOUT(SAT)
All Devices, IOUT = 100 mA
—
—
200
mV
All Devices, IOUT = 500 mA
—
—
500
mV
‘B’ & ‘EB’ Packages Only, IOUT = 700 mA
—
—
600
mV
—
1.0
—
A
Over-Current Trip
Input Voltage
Input Current
Total Supply Current
Clamp Diode Forward Voltage
Clamp Diode Leakage Current
Turn-On Delay
Thermal Limit
ITRIP
Logic 1
VIN(1) or VEN(1)
2.0
—
—
V
Logic 0
VIN(0) or VEN(0)
—
—
0.8
V
Logic 1
VIN(1) or VEN(1) = 2.0 V
—
—
10
µA
Logic 0
VIN(0) or VEN(0) = 0.8 V
—
—
-10
µA
IOUT = 500 mA*, VIN† = VEN = 2.0 V
—
—
80
mA
All Outputs OFF
—
—
15
mA
IF = 1.0 A
—
—
1.7
V
IF = 1.5 A
—
—
2.1
V
VR = 60 V, D1 + D2 or D3 + D4
—
—
50
µA
tPHL
IC = 500 mA
—
—
20
µs
tPLH
IC = 500 mA
—
—
20
µs
—
165
—
°C
ICC
VF
IR
TJ
Typical Data is for design information only.
* Pulse test, four outputs simultaneously.
† All inputs simultaneously, all other tests are performed with each input tested separately.
2559
PROTECTED
QUAD POWER DRIVERS
TYPICAL OUTPUT
CHARACTERISTIC
CIRCUIT DESCRIPTION AND APPLICATION
INCANDESCENT LAMP DRIVER
High incandescent lamp turn-ON/in-rush currents can contribute to
poor lamp reliability and destroy semiconductor lamp drivers. Warming
or current-limiting 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 700 mA
can be driven by these devices without the need for warming (parallel)
or current-limiting (series) resistors.
NOT TO SCALE
OUTPUT VOLTAGE, V
OUT
TJ < 150°C
T
J
= 165°C
JUNCTION
TEMP. LIMIT
THERMAL
GRADIENT
SENSING
I TRIP
V OUT(SAT)
OUTPUT CURRENT, I
OUT
Dwg. GP-013
TYPICAL OUTPUT BEHAVIOR
NORMAL LAMP IN-RUSH CURRENT
LAMP CURRENT
FAULT CONDITIONS
In the event of a shorted load, the load current will attempt to
increase. As described above, the drive current to the affected output
stage is reduced, causing the output stage to go linear, limiting the
peak output current to approximately 1 A. As the power dissipation of
that output stage increases, a thermal gradient sensing circuit will
become operational, further decreasing the drive current to the affected output stage and reducing the output current to a value dependent on supply voltage and load resistance.
THERMAL GRADIENT SENSING
CURRENT LIMIT
ITRIP
TIME
INDUCTIVE LOAD DRIVER
Bifilar (unipolar) stepper motors, relays, or solenoids can be driven
directly. The internal flyback 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 inprove performance. However, the peak voltage must not exceed the specified minimum sustaining voltage (VSUPPLY + VZ + VF ≤ VOUT(SUS)).
NOT TO SCALE
0
When an incandescent lamp is initially turned ON, the cold filament
is at minimum resistance and would normally allow a 10x to 12x inrush 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 then diverted by the shunting transistor,
and the load current is momentarily limited to approximately 1.0 A.
During this short transition period, the output current is reduced to a
value dependent on supply voltage and filament resistance. During
lamp warmup, the filament resistance increases to its maximum value,
the output stage goes into saturation and applies maximum rated
voltage to the lamp.
Dwg. WP-008
Continuous or multiple overload conditions causing the chip
temperature to reach approximately 165°C will result in an additional
reduction in output current to maintain a safe level.
If the fault condition is corrected, the output stage will return to its
normal saturated condition.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
2559
PROTECTED
QUAD POWER DRIVERS
UDx2559B
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
2559
PROTECTED
QUAD POWER DRIVERS
UDx2559EB
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
0.495
0.485
0.050
INDEX AREA
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
28
1
4
11.582
11.430
12.57
12.32
MIN
4.57
4.20
Dwg. MA-005-28A mm
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 5–11, and 19–25 are internally one piece.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
2559
PROTECTED
QUAD POWER DRIVERS
UDx2559LB
Dimensions in Inches
(for reference only)
16
9
0.0125
0.0091
0.419
0.394
0.2992
0.2914
0.050
0.016
0.020
0.013
1
2
0.050
3
0° TO 8°
BSC
0.4133
0.3977
0.0926
0.1043
0.0040 MIN.
Dwg. MA-008-17A in
Dimensions in Millimeters
(controlling dimensions)
16
9
0.32
0.23
10.65
10.00
7.60
7.40
1.27
0.40
0.51
0.33
1
2
1.27
3
10.50
10.10
BSC
0° TO 8°
2.65
2.35
0.10 MIN.
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 4, 5, 12, and 13 are internally one piece.
Dwg. MA-008-17A mm
2559
PROTECTED
QUAD POWER DRIVERS
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.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000