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  • 北京元坤伟业科技有限公司

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  • UDN2547EBTR
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产品型号UDN2547EBTR的Datasheet PDF文件预览

2547  
PROTECTED  
QUAD POWER DRIVERS  
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.  
UDx2547B  
FAULT  
OUT  
1
2
3
4
16  
IN  
IN  
1
2
15  
14  
1
OUT  
ENABLE  
2
13  
12  
11  
GROUND  
GROUND  
GROUND  
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).  
5
6
GROUND  
SUPPLY  
OUT  
3
V
CC  
NO  
CONNECT.  
7
8
10  
9
IN  
IN  
3
4
OUT  
4
Dwg. PP-018A  
Each output also includes diagnostics for increased device protec-  
tion. If any output is shorted or opened, the diagnostics can signal the  
controlling circuitry through a common FAULT pin.  
ABSOLUTE MAXIMUM RATINGS  
at TA = 25°C  
Output Voltage, VOUT ............................ 60 V  
These devices can be used to drive various resistive loads includ-  
ing 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.  
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  
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.  
Package Power Dissipation,  
PD ........................................ See Graph  
Operating Temperature Range, TA  
FEATURES  
Prefix ‘UDK’ ............... -40°C to +125°C  
Prefix ‘UDN’ ................. -20°C to +85°C  
Prefix ‘UDQ’ ................. -40°C to +85°C  
Storage Temperature Range,  
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  
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.  
Always order by complete part number: a prefix to indicate operat-  
ing temperature range + the basic four-digit part number + a suffix to  
indicate package style, e.g., UDK2547EB .  
2547  
PROTECTED  
QUAD POWER DRIVERS  
UDx2547EB  
10  
8
R
= 6°C/W  
NC  
θJT  
GROUND  
5
25  
24  
23  
22  
GROUND  
FAULT  
6
4
2
0
6
7
8
SUFFIX 'EB', R  
SUFFIX 'B', R  
= 36°C/W  
θJA  
9
21  
20  
19  
10  
11  
GROUND  
GROUND  
= 43°C/W  
θJA  
V
NC  
NC  
CC  
50  
75  
100  
125  
150  
25  
TEMPERATURE IN °C  
Dwg. GP-004-1A  
Dwg. PP-019  
FUNCTIONAL BLOCK DIAGRAM  
FAULT  
ABLE  
COMMON CONTROL  
ONE OF FOUR DRIVERS  
OUT  
N
IN  
N
CURRENT  
LIMIT  
THERMAL  
SHUTDOWN  
<<1  
Dwg. FP-007  
115 Northeast Cutoff, Box 15036  
Worcester, Massachusetts 01615-0036 (508) 853-5000  
Copyright © 1989, 1993, Allegro MicroSystems, Inc.  
2547  
PROTECTED  
QUAD POWER DRIVERS  
ELECTRICAL CHARACTERISTICS at T = +25°C (prefix ‘UDN’) or over operating  
A
temperature range (prefix ‘UDK’ or ‘UDQ’), V = 4.75 V to 5.5 V  
CC  
Limits  
Characteristic  
Symbol  
Test Conditions  
Min.  
Typ.  
Max.  
150  
150  
Units  
µA  
µA  
V
Output Leakage Current*  
IOUT  
VOUT = 60 V, VIN = 0.8 V, VEN = 2.0 V  
30  
30  
V
OUT = 60 V, VIN = 2.0 V, VEN = 0.8 V  
Output Sustaining Voltage  
Output Saturation Voltage  
VOUT(SUS)  
VOUT(SAT)  
IOUT = 100 mA, VIN = 0.8 V, VCC = Open  
IOUT = 400 mA  
40  
300  
400  
550  
1.7  
mV  
mV  
mV  
A
I
OUT = 500 mA  
OUT = 600 mA  
I
Over-Current Limit  
Input Voltage  
IOUT  
5 ms PulseTest, VOUT = 5.0 V  
1. 3  
Logic 1  
Logic 0  
Logic 1  
Logic 0  
IF  
V
V
V
V
IN(1) or VEN(1)  
2.0  
V
lN(0) or VEN(0)  
0.8  
60  
V
Input Current  
IN(1) or VEN(1) = 2.0 V  
IN(0) or VEN(0) = 0.8 V  
µA  
µA  
µA  
10  
Fault Output Leakage Current  
Fault Output Current  
VF = 40 V  
<1.0  
2.0  
IF  
VF = 40 V, Driver Outputs Open,  
VIN = 0.8 V, VEN = 2.0 V  
40  
60  
0.1  
45  
80  
0.4  
50  
10  
µA  
V
Fault Output Saturation Voltage  
Total Supply Current  
VF(SAT)  
ICC  
IF = 30 µA  
All Outputs ON  
All Outputs OFF  
mA  
mA  
°C  
°C  
6.0  
165  
15  
Thermal Shutdown  
Thermal Hysteresis  
TJ  
TJ  
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
H
H
L
L
H
H
H
H
H
X
Over-Current or  
Short to Supply  
H
H
H
H
R
H
L
L
Thermal Fault  
Open Load or  
Short to Ground  
L
H
L
L
X = Don’t care.  
R = Linear drive, current limited.  
2547  
PROTECTED  
QUAD POWER DRIVERS  
CIRCUIT DESCRIPTION AND APPLICATION  
NORMAL LAMP IN-RUSH CURRENT  
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 recom-  
mended to eliminate erroneous switching.  
NOT TO SCALE  
INCANDESCENT LAMP DRIVER  
High incandescent lamp turn-ON/in-rush currents can contribute to  
poor lamp reliability and destroy semiconductor lamp drivers.  
SHORT CIRCUIT  
CURRENT LIMIT  
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.  
THERMAL SHUTDOWN  
THERMAL HYSTERESIS  
TIME  
Dwg. WP-005A  
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 approxi-  
mately 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 speci-  
fied 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 DRIVERS  
UDN2547B and UDQ2547B  
Dimensions in Inches  
(controlling dimensions)  
0.020  
0.008  
NOTE 4  
9
16  
0.430  
MAX  
0.280  
0.240  
0.300  
BSC  
1
8
0.100  
0.070  
0.045  
0.005  
BSC  
MIN  
0.775  
0.735  
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)  
0.508  
0.204  
NOTE 4  
9
16  
10.92  
MAX  
7.11  
6.10  
7.62  
BSC  
1
1.77  
1.15  
8
2.54  
0.13  
BSC  
MIN  
19.68  
18.67  
5.33  
MAX  
0.39  
3.81  
2.93  
MIN  
0.558  
0.356  
Dwg. MA-001-17A mm  
NOTES: 1. Exact body and lead configuration at vendor’s option within limits shown.  
2. Lead spacing tolerance is non-cumulative  
3. Lead thickness is measured at seating plane or below.  
4. Webbed lead frame. Leads 4, 5, 12, and 13 are internally one piece.  
2547  
PROTECTED  
QUAD POWER DRIVERS  
UDN2547EB and UDQ2547EB  
Dimensions in Inches  
(controlling dimensions)  
18  
12  
0.013  
0.021  
19  
11  
0.219  
0.191  
0.026  
0.032  
0.456  
0.450  
INDEX AREA  
0.495  
0.485  
0.050  
BSC  
0.219  
0.191  
25  
5
26  
28  
1
4
0.020  
0.456  
0.450  
MIN  
0.165  
0.180  
0.495  
0.485  
Dwg. MA-005-28A in  
Dimensions in Millimeters  
(for reference only)  
18  
12  
0.331  
0.533  
19  
11  
5.56  
4.85  
0.812  
0.661  
11.58  
11.43  
INDEX AREA  
12.57  
12.32  
1.27  
BSC  
5.56  
4.85  
25  
5
26  
28  
1
4
0.51  
11.582  
11.430  
MIN  
4.57  
4.20  
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  
2547  
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.  
2547  
PROTECTED  
QUAD POWER DRIVERS  
POWER SINK DRIVERS  
SELECTION GUIDE  
IN ORDER OF 1) OUTPUT CURRENT, 2) OUTPUT VOLTAGE, 3) NUMBER OF DRIVERS  
Features  
Output Ratings *  
Serial  
Input  
Latched  
Drivers  
Diode  
Saturated  
Outputs  
Internal  
mA  
V
#
Clamp  
Protection  
Part Number†  
100  
20  
30  
40  
8
32  
32  
X
X
X
X
X
X
2595  
5833  
5832  
250  
300  
135  
7
X
7003  
45  
50  
50  
50  
60  
60  
95  
95  
1
7
8
8
2
4
7
8
Hall Sensor/Driver  
X
X
X
X
X
X
X
X
X
X
X
X
5140  
2003  
2803  
2596  
5275  
2557  
2023  
2823  
Hall Sensor/Driver  
350  
50  
50  
50  
50  
50  
80  
50  
80  
95  
95  
4
7
8
8
8
8
8
8
7
8
X
X
X
X
X
X
X
X
X
X
X
X
X
X
5800  
2004  
2804  
5801  
5821  
5822  
5841  
5842  
2024  
2824  
X
X
X
X
450  
600  
30  
28  
Dual 4 to 14-Line Decoder/Driver  
6817  
60  
60  
4
4
X
X
X
X
X
2547  
2549  
700  
750  
900  
60  
50  
4
8
X
X
X
X
X
2543 and 2559  
2597  
14  
26  
2
2
Hall Sensor/Driver  
Hall Sensor/Driver  
X
X
X
X
X
X
3625  
3626  
1000  
1200  
1250  
46  
46  
4
4
Stepper Motor Controller/Driver MOS  
Microstepping Controller/Driver MOS  
7024 and 7029  
7042  
50  
50  
4
4
Stepper Motor Translator/Driver  
X
5804  
2064 and 2068  
X
X
X
X
1500  
1600  
1800  
80  
50  
4
9
2065 and 2069  
5829  
X
50  
50  
4
4
X
X
2544  
2540  
3000  
4000  
46  
50  
80  
4
4
4
Stepper Motor Controller/Driver MOS  
7026  
2878  
2879  
X
X
*
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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