UDN2544B

Manufacturer Part NumberUDN2544B
DescriptionQuad Darlington Power Driver
ManufacturerAllegro MicroSystems, Inc.
UDN2544B datasheet
 
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OUT
1
16
4
K
2
15
14
3
OUT
3
4
GROUND
13
GROUND
5
12
OUT
6
11
2
K
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10
OUT
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1
Output Voltage, V
............................. 50 V
OUT
Output Current, I
OUT
(Peak) ........................................... 2.5 A
(Continuous) ................................. 1.8 A
Logic Supply Voltage, V
.................... 7.0 V
CC
Input Voltage, V
.................................. 7.0 V
IN
Package Power Dissipation,
P
......................................... See Graph
D
Operating Temperature Range,
T
.................................. -20 C to +85 C
A
Storage Temperature Range,
T
................................ -55 C to +150 C
S
2544
Combining logic gates and high-current bipolar outputs, the
UDN2544B quad Darlington power driver provides an interface be-
tween low-level logic circuitry and high-power loads. Each of the four
outputs can sink up to 1.8 A in the on state with peak inrush currents
to 2.5 A. The four power outputs are each comprised of an open-
IN
4
collector Darlington driver and an internal flyback/clamp diode for
IN
switching inductive loads. They feature a minimum breakdown and
3
sustaining voltage of 50 V. The logic inputs are compatible with TTL
ENABLE
and 5 V CMOS logic systems.
GROUND
This device is particularly well-suited for unipolar stepper motor
drive applications. With complementary control inputs and an active-
GROUND
low ENABLE, the UDN2544B makes it easy to implement full stepping
of a stepper motor with only two microcontroller/microprocessor control
V
CC
lines. Other typical applications include relay or solenoid driving and
IN
incandescent or LED lamp driving.
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IN
1
The UDN2544B is supplied in a 16-pin batwing power DIP. The
batwing construction provides for maximum package power dissipation
in a standard DIP construction. At 25 C, and with only 1 sq. in. of
Dwg. PP-017A
copper foil at the ground tabs, the package is capable of safely dissi-
pating 3.8 W.
1.8 A Continuous Output Current
Output Voltage to 50 V
Inputs Configured for Unipolar Stepper Motors
Active-Low Output Enable
TTL and 5 V CMOS Compatible Inputs
Integral Transient-Suppression Diodes
Always order by complete part number: UDN2544B .
QUAD DARLINGTON
POWER DRIVER

UDN2544B Summary of contents

  • Page 1

    ... LED lamp driving The UDN2544B is supplied in a 16-pin batwing power DIP. The batwing construction provides for maximum package power dissipation in a standard DIP construction and with only 1 sq. in. of Dwg. PP-017A copper foil at the ground tabs, the package is capable of safely dissi- pating 3 ...

  • Page 2

    ... OUT OFF OFF X OFF X OFF 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 W Copyright © 1989, 2001 Allegro MicroSystems, Inc. Limits Min. Typ. Max. — <1.0 100 50 — — — 0.9 1.0 — 1.0 1.2 — 1.3 1.6 2.4 — — ...

  • Page 3

    ... If the ENABLE input is not used, it should be tied low. All inputs will float high if open circuited. 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. ...

  • Page 4

    QUAD DARLINGTON POWER DRIVER 16 0.280 0.240 1 0.070 0.045 0.210 MAX 0.015 MIN 0.022 0.014 16 7.11 6.10 1 1.77 1.15 5.33 MAX 0.39 MIN 0.558 0.356 NOTES: 1. Leads and 16 may be half ...