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2549 PROTECTED QUAD POWER DRIVERS
2549
PROTECTED QUAD POWER DRIVERS
Providing improved output current limiting, the UDK/UDN/ UDQ2549B and UDK/UDN/UDQ2549EB quad power drivers combine AND 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. 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 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, the six devices in this family 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 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.
Data Sheet 29317.8
1
16
UDx2549B
OUT4 K OUT3 GROUND GROUND OUT2 K OUT1 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 IN 4 IN3 ENABLE GROUND GROUND V CC IN 2 IN 1
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 Applications for further information.
FEATURES
s s s s s s s 600 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 UDN2543B/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., UDK2549EB .
2549 PROTECTED QUAD POWER DRIVERS
FUNCTIONAL BLOCK DIAGRAM
(1 of 4 Channels)
V CC
K
ENABLE IN N THERMAL LIMIT
OUTN
<<1
Dwg. FP-041
UDx2549EB
10
NO CONNECTION
ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS
IN 1
K
IN 2
ENABLE
OUT2
OUT1
28
27
26
8
R
JT
4
2
3
1
NC GROUND 5 6 7 8 9 10 GROUND 11 NC
15 12 13 14 16 17
= 6C/W
25 24 23 22 21 20 19 VCC
18
GROUND
6
4
SUFFIX 'EB', R JA = 36C/W
GROUND
2
SUFFIX 'B', R JA = 43C/W
NO CONNECTION
OUT 4
OUT 3
IN 4
IN 3
K
SUPPLY
0 25 50 75 100 TEMPERATURE IN C 125 150
Dwg. PP-019-1
Dwg. GP-004-1A
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright (c) 1991, 1995, Allegro MicroSystems, Inc.
2549 PROTECTED QUAD POWER DRIVERS
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 = 60 V, VIN = 0.8 V, VEN = 2.0 V VOUT = 60 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 IOUT = 100 mA IOUT = 400 mA 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 IOUT = 600 mA, VIN* = VEN = 2.0 V All Outputs OFF Clamp Diode Forward Voltage Clamp Diode Leakage Current Thermal Limit VF IR TJ IF = 1.0 A VR = 60 V, D1 + D2 or D3 + D4 Min. -- -- 40 -- -- -- -- 2.0 -- -- -- -- -- -- -- -- Typ. <1.0 <1.0 -- -- -- -- 1.0 -- -- -- -- -- -- -- -- 165 Max. 100 100 -- 200 400 600 -- -- 0.8 10 -10 65 15 1.7 50 -- Units A A V mV mV mV A V V A A mA mA V A C
Typical Data is for design information only. * All inputs simultaneously, all other tests are performed with each input tested separately.
2549 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 600 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 the 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 which 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 + V Z + VF V OUT(SUS)). 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. 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.
TIME
TJ < 150C
NOT TO SCALE
OUTPUT VOLTAGE, V
OUT
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
0
Dwg. WP-008
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
2549 PROTECTED QUAD POWER DRIVERS
UDN2549B and UDQ2549B
Dimensions in Inches (controlling dimensions)
16
NOTE 4
9
0.020 0.008
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)
0.508 0.204
16
NOTE 4
9
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.
2549 PROTECTED QUAD POWER DRIVERS
UDN2549EB and UDQ2549EB
Dimensions in Inches (controlling dimensions)
18 12
0.013 0.021 0.219 0.191
19
11
0.050
BSC
0.026 0.032 0.456 0.450 0.495 0.485
INDEX AREA
0.219 0.191
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 through 11 and 19 through 25 are internally one piece.
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
2549 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.
2549 PROTECTED QUAD POWER DRIVERS
POWER SINK DRIVERS SELECTION GUIDE
IN ORDER OF 1) OUTPUT CURRENT, 2) OUTPUT VOLTAGE, 3) NUMBER OF DRIVERS
Output Ratings * mA
100
Features
Serial Latched Diode Saturated Input Drivers Clamp Outputs - - - X X X - - X X - X - - X - Hall Sensor/Driver X - - - X - - - X - - - X X Hall Sensor/Driver - X - - X X - - X - - - X - - X X - - - X - - - X - - X X - X X - - X X - - X X X - X X X - - - X - - - X - Dual 4 to 14-Line Decoder/Driver - - - - X - - X X - - X X - - X X Hall Sensor/Driver X X Hall Sensor/Driver X X Stepper Motor Controller/Driver MOS Microstepping Controller/Driver MOS Stepper Motor Translator/Driver - - - X - - - X - X X - - - - X - - - X - Stepper Motor Controller/Driver MOS - - X - - - X - Internal Protection - - - - X - - - - X - - - - - - - - - - - - - X X X - X X - - X - - X - - - - -
V
20 30 40 135 45 50 50 50 60 60 95 95 50 50 50 50 50 80 50 80 95 95 30 60 60 60 50 14 26 46 46 50 50 80 50 50 50 46 50 80
#
8 32 32 7 1 7 8 8 2 4 7 8 4 7 8 8 8 8 8 8 7 8 28 4 4 4 8 2 2 4 4 4 4 4 9 4 4 4 4 4
Part Number
2595 5833 5832 7003 5140 2003 2803 2596 5275 2557 2023 2823 5800 2004 2804 5801 5821 5822 5841 5842 2024 2824 6817 2547 2549 2543 and 2559 2597 3625 3626 7024 and 7029 7042 5804 2064 and 2068 2065 and 2069 5829 2544 2540 7026 2878 2879
250 300
350
450 600 700 750 900 1000 1200 1250 1500 1600 1800 3000 4000 *
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

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