Allegro UDN2549EB, UDN2549B, UDQ2549EB, UDQ2549B, UDK2549EB Datasheet
...
PROTECTED
QUAD POWER DRIVER
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.
FEATURES
■ 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
ABSOLUTE MAXIMUM RATINGS
at T
A
= 25°C
Output Voltage, V
OUT
. . . . . . . . . . . . . 60 V
Over-Current Protected Output Voltage,
V
OUT
. . . . . . . . . . . . . . . . . . . . . . . 25 V
Output Current, I
OUT
. . . . . . . . . . . . . 1.0 A*
Supply Voltage, VCC. . . . . . . . . . . . . . 7.0 V
Input Voltage, VIN or VEN. . . . . . . . . . 7.0 V
Package Power Dissipation,
P
D
. . . . . . . . . . . . . . . . . . . . See Graph
Operating Temperature Range, T
A
Prefix ‘UDK’ . . . . . . . -40°C to +125°C
Prefix ‘UDN’ . . . . . . . . -20°C to +85°C
Prefix ‘UDQ’ . . . . . . . . -40
°C to +85°C
Storage Temperature Range,
T
S
. . . . . . . . . . . . . . . -55°C to +150°C
*Outputs are peak current limited at approximately
1.0 A per driver. See Circuit Description and
Applications for further information.
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 .
UDx2549B
Data Sheet
29317.8
1
2
3
14
4
5
6
7
8
9
10
11
12
13
15
16
ENABLE
GROUND
GROUND
OUT
2
K
GROUND
GROUND
OUT
3
OUT
4
K
OUT
1
V
CC
IN
1
Dwg. PP-017-1
IN
4
IN
3
IN
2
2549
2549
PROTECTED
QUAD POWER DRIVER
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
FUNCTIONAL BLOCK DIAGRAM
(1 of 4 Channels)
UDx2549EB
50 75 100 125 150
10
6
4
2
0
ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS
TEMPERATURE IN °C
8
25
R = 6°C/W
θJT
Dwg. GP-004-1A
SUFFIX 'EB', R = 36°C/W
θJA
SUFFIX 'B', R = 43°C/W
θJA
V
CC
<<1 Ω
OUT
Dwg. FP-041
N
IN
N
THERMAL
LIMIT
ENABLE
K
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
GROUND
GROUND
GROUND
GROUND
Dwg. PP-019-1
K
NO
CONNECTION
ENABLE
SUPPLY
NC
NC
CC
V
OUT
1
OUT
2
OUT
3
OUT
4
IN
4
IN
3
IN
2
IN
1
NO
CONNECTION
K
Copyright © 1991, 1995, Allegro MicroSystems, Inc.
2549
PROTECTED
QUAD POWER DRIVER
www.allegromicro.com
Characteristic Symbol Test Conditions Min. Typ. Max. Units
Output Leakage Current I
CEX
V
OUT
= 60 V, VIN = 0.8 V, VEN = 2.0 V — <1.0 100 µA
V
OUT
= 60 V, VIN = 2.0 V, VEN = 0.8 V — <1.0 100 µA
Output Sustaining Voltage V
OUT(SUS)
I
OUT
= 100 mA, VIN = VEN = 0.8 V 40 —— V
Output Saturation Voltage V
OUT(SAT)
I
OUT
= 100 mA ——200 mV
I
OUT
= 400 mA ——400 mV
I
OUT
= 600 mA ——600 mV
Over-Current Trip I
TRIP
— 1.0 — A
Input Voltage Logic 1 V
IN(1)
or V
EN(1)
2.0 —— V
Logic 0 V
IN(0)
or V
EN(0)
——0.8 V
Input Current Logic 1 V
IN(1)
or V
EN(1)
= 2.0 V ——10 µA
Logic 0 V
IN(0)
or V
EN(0)
= 0.8 V ——-10 µA
Total Supply Current I
CC
I
OUT
= 600 mA, VIN* = VEN = 2.0 V ——65 mA
All Outputs OFF ——15 mA
Clamp Diode Forward Voltage V
F
IF = 1.0 A ——1.7 V
Clamp Diode Leakage Current I
R
VR = 60 V, D1 + D2 or D3 + D
4
——50 µA
Thermal Limit T
J
— 165 — °C
Limits
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.
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
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