Page 1
Data Sheet
29309.10†
2944
QUAD HIGH-CURRENT,
HIGH-VOLTAGE SOURCE DRIVER
Capable of driving loads to 4 A at supply voltages to 60 V (inductive loads to 35 V), the UDN2944W is a quad high-current, highvoltage source driver. Each of the four power drivers can provide
V
S
space- and cost-saving interface between low-level signal-processing
circuits and high-power loads in harsh environments.
Individual supply lines have been provided for each pair of drivers
so that different supplies can be used to drive multiple loads. The
controlling inputs are TTL or CMOS compatible. The outputs include
transient-suppression diodes for inductive loads.
This quad Darlington array is designed to serve as an interface
between low-level circuitry and peripheral-power loads such as solenoids, motors, incandescent displays, heaters, and similar loads of up to
240 W per channel. The UDN2944W is an ideal complement to the
UDN2878W quad 4 A sink driver.
Dwg. No. A-13,054
ABSOLUTE MAXIMUM RATINGS
at +25°C Free-Air Temperature
Supply Voltage Range, VS..... 10 V to 60 V
Output Current, I
(continuous) ............................... - 4.0 A
(peak)......................................... -5.0 A
Input Voltage, VIN................................ 15 V
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
Output current rating will be limited by
ambient temperature, duty cycle, heat
sinking, air flow, and number of outputs
conducting. Under any set of conditions, do
not exceed the -5.0 A peak current or a
junction temperature of +150°C.
OUT
For maximum power-handling capability, the UDN2944W driver
is supplied in a 12-pin single in-line, power-tab package that allows
efficient attachment of an external heat sink for maximum allowable
package power dissipation. An external heat sink is usually required
for proper operation of this device. The tab is at ground potential and
needs no insulation.
FEATURES
■ Output Current to 4 A
■ Output Voltage to 60 V
■ Loads to 960 W
■ Integral Output Suppression Diodes
■ TTL and CMOS Compatible Inputs
■ Plastic Single In-Line Package
■ Heat-Sink Tab
Always order by complete part number: UDN2944W .
Page 2
2944
QUAD HIGH-CURRENT,
HIGH-VOLTAGE
SOURCE DRIVER
PARTIAL SCHEMATIC
10
R = 2.0°C/W
θJT
8
6
12°C/W HEAT SINK
4
2
FREE AIR, R = 38°C/W
0
ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS
25
50 75 100 125 150
TEMPERATURE IN °C
3.0°C/W HEAT SINK
R = 14°C/W
θJA
θJA
R = 5.0°C/W
θJA
Dwg. No. A-13,058
TRUTH TABLE
INPUT ENABLE OUTPUT
LLL
HLH
LHL
HHL
NOTE: Pin 3 must be connected to VS for
operation of input logic gates.
Dwg. GP-012B
115 Northeast Cutoff, Box 15036
W
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1986, 2000 Allegro MicroSystems, Inc.
Page 3
2944
QUAD HIGH-CURRENT,
HIGH-VOLTAGE
SOURCE DRIVER
ELECTRICAL CHARACTERISTICS at TA = +25°C, TJ ≤ +150°C, VS = 60 V, V
ENABLE
= 0 V
(unless otherwise noted).
Limits
Characteristic Symbol Test Conditions Min. Max. Units
Supply Voltage Range V
Output Leakage Current I
Output Sustaining Voltage V
Output Saturation Voltage V
S
CEX
CE(sus)
CE(SAT)
Input Voltage Logic 1 V
Logic 0 V
Input Current Logic 1 V
Logic 0 V
Total Supply Current I
Clamp Diode Leakage Current I
Clamp Diode Forward Voltage V
Turn-On Delay t
Turn-Off Delay t
S
R
F
ON
OFF
V
= 0 V, V
OUT
I
= -4 A, L = 3 mH 35 — V
OUT
I
= -1 A, VIN = 2.4 V — 1.8 V
OUT
I
= -4 A, VIN = 2.4 V — 2.5 V
OUT
or V
V
IN(1)
IN(0)
IN(1)
IN(1)
IN(0)
or V
or V
or V
or V
ENABLE(1)
ENABLE(0)
ENABLE(1)
ENABLE(1)
ENABLE(0)
= 2.4 V — 50 µA
ENABLE
= 2.4 V — 220 µA
= 12 V — 1.5 mA
= 0.8 V — 50 µA
All drivers on, All outputs open — 25 mA
VR = 60 V — 50 µA
IF = 4 A — 2.2 V
0.5 Ein to 0.5 E
0.5 Ein to 0.5 E
, RL = 15 Ω — 2.0 µs
out
, RL = 15 Ω —10 µs
out
10 60 V
2.0 — V
— 0.8 V
NOTE: Negative current is defined as coming out of (sourcing) the device being tested.
TYPICAL APPLICATION
QUAD RELAY DRIVE
(Using 2 Voltage Sources
and Optional PWM Current Limiting)
www.allegromicro.com
Page 4
2944
QUAD HIGH-CURRENT,
HIGH-VOLTAGE
SOURCE DRIVER
Dimensions in Inches
(controlling dimensions)
INDEX
AREA
0.065
0.035
0.020
1.260
1.240
0.775
0.765
0.245
0.225
0.180
0.155
MAX
0.055
0.045
ø
0.145
0.140
0.135
0.570
0.365
1
0.030
0.020
12
0.100
±0.010
0.540
0.290
0.023
0.018
MIN
0.100
0.080
0.070
Dwg. MP-007 in
NOTES: 1. Lead thickness is measured at seating plane or below.
2. Lead spacing tolerance is non-cumulative.
3. Exact body and lead configuration at vendor’s option within limits shown.
4. Lead gauge plane is 0.030” below seating plane.
5. Supplied in standard sticks/tubes of 15 devices.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Page 5
Dimensions in Millimeters
(for reference only)
2944
QUAD HIGH-CURRENT,
HIGH-VOLTAGE
SOURCE DRIVER
INDEX
AREA
1.65
0.89
0.51
1
32.00
31.49
19.69
19.45
0.76
0.51
12
6.22
5.71
3.56
9.27
2.54
±0.254
3.94
3.68
4.57
MAX
ø
14.48
13.71
7.36
MIN
0.59
0.45
1.40
1.14
3.43
2.54
2.03
1.77
Dwg. MP-007 mm
NOTES: 1. Lead thickness is measured at seating plane or below.
2. Lead spacing tolerance is non-cumulative.
3. Exact body and lead configuration at vendor’s option within limits shown.
4. Lead gauge plane is 0.762 mm below seating plane.
5. Supplied in standard sticks/tubes of 15 devices.
www.allegromicro.com
Page 6
2944
QUAD HIGH-CURRENT,
HIGH-VOLTAGE
SOURCE DRIVER
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115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Page 7
2944
QUAD HIGH-CURRENT,
HIGH-VOLTAGE
SOURCE DRIVER
www.allegromicro.com
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.
Page 8
2944
QUAD HIGH-CURRENT,
HIGH-VOLTAGE
SOURCE DRIVER
POWER SOURCE DRIVERS
IN ORDER OF 1) OUTPUT CURRENT, 2) OUTPUT VOLTAGE, 3) NUMBER OF DRIVERS
Output Ratings *
Serial Latched Diode Saturated Internal
mA V # Input Drivers Clamp Outputs Protection Part Number
-25 60 8 – X – – – 5815
60 10 X X active pull-down – – 5810-F and 6809/10
60 12 X X active pull-down – – 5811 and 6811
60 20 X X active pull-down – – 5812-F and 6812
60 32 X X active pull-down – – 5818-F and 6818
85 8 – – – – – 6118
-120 -25 8 – – X X – 2585
30 8 – – X X – 2985
50 8 XXXX –5895
-350 35 8 – – X – X 2987
50 8 – – X – – 2981 and 2982
50 8 X X X – – 5891
-50 8 – – X – – 2580
80 8 – – X – – 2983 and 2984
80 8 X X X – – 5890
-80 8 – – X – – 2588
-500 6 1 – – – MOSFET X 2525 and 2535
6 2 – – – MOSFET X 2526 and 2536
-4000 60 4 – – X – – 2944
* 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.
Features
†
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
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