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2559
UDx2559LB
1 16
PROTECTED QUAD POWER DRIVER
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.
IN 4 IN3 ENABLE GROUND GROUND V CC IN 2 IN 1
Data Sheet 29317.14B
UDx2559B
OUT4 K OUT3 GROUND GROUND OUT2 K OUT1 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9
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.
Dwg. PP-017-1
ABSOLUTE MAXIMUM RATINGS
at TA = 25C 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' . . . . -40C to +125C Prefix `UDN' . . . . . -20C to +85C Prefix `UDQ' . . . . . -40C to +85C Storage Temperature Range, TS . . . . . . . . . . . . -55C to +150C *Outputs are peak current limited at approximately 1.0 A per driver. See Circuit Description and Application for further information.
FEATURES
s s s s s s s
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 .
2559 PROTECTED QUAD POWER DRIVER
FUNCTIONAL BLOCK DIAGRAM
(1 of 4 Channels)
V CC
K
ENABLE IN N THERMAL LIMIT
OUTN
<<1
Dwg. FP-041
UDx2559EB
NO CONNECTION
ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS
5
IN 1
IN 2
ENABLE
OUT2
OUT1
NC GROUND 5 6 7 8 9 10 GROUND 11 NC VCC 25 24 23 22 21 20 19 GROUND GROUND
28
27
26
4
2
3
1
4
SUFFIX 'EB', R JA = 36C/W
R JT = 6C/W
K
3
SUFFIX 'B', R JA = 43C/W
2
1
SUFFIX 'LB', R JA = 90C/W
15
12
13
14
16
17
18
0 25 50 75 100 TEMPERATURE IN C 125 150
NO CONNECTION
OUT 4
OUT 3
IN 4
IN 3
K
SUPPLY
Dwg. GP-004-2B
Dwg. PP-019-1
PD = (VOUT1 x IOUT1 x dc) + ... + (VOUTn x IOUTn x dc) + (VCC x ICC) = (TJ - TA)/RJA
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright (c) 1995, 2002 Allegro MicroSystems, Inc.
2559 PROTECTED QUAD POWER DRIVER
ELECTRICAL CHARACTERISTICS at TA = +25C (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 VOUT = 50 V, VIN = 0.8 V, VEN = 2.0 V VOUT = 50 V, VIN = 2.0 V, VEN = 0.8 V Output Sustaining Voltage Output Saturation Voltage VOUT(SUS) VOUT(SAT) IOUT = 100 mA, VIN = VEN = 0.8 V All Devices, IOUT = 100 mA All Devices, IOUT = 400 mA `B' & `EB' Packages Only, IOUT = 600 mA Over-Current Trip Input Voltage ITRIP Logic 1 Logic 0 Input Current Logic 1 Logic 0 Total Supply Current ICC VIN(1) or VEN(1) VIN(0) or VEN(0) VIN(1) or VEN(1) = 2.0 V VIN(0) or VEN(0) = 0.8 V All Outputs ON, VIN* = VEN = 2.0 V All Outputs OFF Clamp Diode Forward Voltage VF IF = 1.0 A IF = 1.5 A Clamp Diode Leakage Current Turn-On Delay IR tPHL tPLH Thermal Limit TJ VR = 50 V, D1 + D2 or D3 + D4 IOUT = 500 mA IOUT = 500 mA Min. -- -- 40 -- -- -- -- 2.0 -- -- -- -- -- -- -- -- -- -- -- Typ. <1.0 <1.0 -- -- -- -- 1.0 -- -- -- -- -- -- -- -- -- -- -- 165 Max. 100 100 -- 300 500 700 -- -- 0.8 40 -10 80 5.0 1.7 2.1 50 20 20 -- Units A A V mV mV mV A V V A A mA mA V V A s s C
Typical Data is for design information only. Negative current is defined as coming out of (sourcing) the specified terminal. As used here, -100 is defined as greater than +10 (absolute magnitude convention) and the minimum is implicitly zero. * All inputs simultaneously, all other tests are performed with each input tested separately.
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2559 PROTECTED QUAD POWER DRIVER
TYPICAL OUTPUT CHARACTERISTIC CIRCUIT DESCRIPTION AND APPLICATION
INCANDESCENT LAMP DRIVER
TJ < 150C
NOT TO SCALE
OUTPUT VOLTAGE, V OUT
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. 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 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.
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)). FAULT CONDITIONS
T
J
= 165C
JUNCTION TEMP. LIMIT
THERMAL GRADIENT SENSING V OUT(SAT)
I TRIP
OUTPUT CURRENT, I
OUT
Dwg. GP-013
TYPICAL OUTPUT BEHAVIOR
NORMAL LAMP IN-RUSH CURRENT
NOT TO SCALE
LAMP CURRENT
THERMAL GRADIENT SENSING CURRENT LIMIT ITRIP
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. Continuous or multiple overload conditions causing the chip temperature to reach approximately 165C 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.
0
TIME
Dwg. WP-008
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
2559 PROTECTED QUAD POWER DRIVER
UDx2559B
Dimensions in Inches (controlling dimensions)
0.020 0.008
16
NOTE 4
9
0.430 0.280 0.240
MAX
0.300
BSC
1 0.070 0.045
0.100 0.775 0.735
BSC
8 0.005
MIN
0.210
MAX
0.015
MIN
0.150 0.115 0.022 0.014
Dwg. MA-001-17A in
Dimensions in Millimeters (for reference only)
16
NOTE 4
9
0.508 0.204
10.92 7.11 6.10
MAX
7.62
BSC
1 1.77 1.15
2.54 19.68 18.67
BSC
8 0.13
MIN
5.33
MAX
0.39
MIN
3.81 2.93 0.558 0.356
Dwg. MA-001-17A mm
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.
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2559 PROTECTED QUAD POWER DRIVER
UDx2559EB
Dimensions in Inches (controlling dimensions)
18 12
0.013 0.021 0.219 0.191
19
11
0.026 0.032 0.456 0.450
BSC
INDEX AREA
0.050 0.219 0.191
0.495 0.485 25 5
26 0.020
MIN
28
1
4
0.165 0.180
0.456 0.450 0.495 0.485
Dwg. MA-005-28A in
Dimensions in Millimeters (for reference only)
18 12
0.331 0.533 5.56 4.85
19
11
1.27
BSC
0.812 0.661 11.58 11.43 12.57 12.32
INDEX AREA
5.56 4.85
25
5
26 0.51
MIN
28
1
4
4.57 4.20
11.582 11.430 12.57 12.32
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 DRIVER
UDx2559LB
Dimensions in Inches (for reference only)
16 9 0.0125 0.0091
0.2992 0.2914
0.419 0.394
0.050 0.016 0.020 0.013
1
2
3 0.4133 0.3977
0.050
BSC
0 TO 8
0.0926 0.1043 0.0040 MIN.
Dwg. MA-008-17A in
Dimensions in Millimeters (controlling dimensions)
16 9 0.32 0.23
7.60 7.40
10.65 10.00
1.27 0.40 0.51 0.33
1
2
3 10.50 10.10
1.27
BSC
0 TO 8
2.65 2.35 0.10 MIN.
Dwg. MA-008-17A 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 4, 5, 12, and 13 are internally one piece.
www.allegromicro.com
2559 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.
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000

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