UDN2944 Allegro MicroSystems, Inc., UDN2944 Datasheet

UDN2944

Manufacturer Part Number

UDN2944

Description

Quad High-current, High-voltage Source Driver

Manufacturer

Allegro MicroSystems, Inc.

Datasheet

1.UDN2944.pdf (8 pages)

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UDN2944W

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Supply Voltage Range, V

Output Current, I

Input Voltage, V

Package Power Dissipation,

Operating Temperature Range,

Storage Temperature Range,

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.

(continuous) ............................... -4.0 A

(peak) ......................................... - 5.0 A

....................................... See Graph

................................ -20

.............................. -55

OUT

................................ 15 V

..... 10 V to 60 V

C to +150

Dwg. No. A-13,054

C to +85

2944

tive loads to 35 V), the UDN2944W is a quad high-current, high-

voltage source driver. Each of the four power drivers can provide

space- and cost-saving interface between low-level signal-processing

circuits and high-power loads in harsh environments.

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.

between low-level circuitry and peripheral-power loads such as sole-

noids, 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.

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.

I Output Current to 4 A

I Output Voltage to 60 V

I Loads to 960 W

I Integral Output Suppression Diodes

I TTL and CMOS Compatible Inputs

I Plastic Single In-Line Package

I Heat-Sink Tab

Always order by complete part number:

HIGH-VOLTAGE SOURCE DRIVER

Capable of driving loads to 4 A at supply voltages to 60 V (induc-

Individual supply lines have been provided for each pair of drivers

This quad Darlington array is designed to serve as an interface

For maximum power-handling capability, the UDN2944W driver

QUAD HIGH-CURRENT,

Related parts for UDN2944

UDN2944 Summary of contents

Page 1

... QUAD HIGH-CURRENT, HIGH-VOLTAGE SOURCE DRIVER Capable of driving loads supply voltages (induc- tive loads to 35 V), the UDN2944W is a quad high-current, high- voltage source driver. Each of the four power drivers can provide space- and cost-saving interface between low-level signal-processing circuits and high-power loads in harsh environments. ...

Page 2

... TEMPERATURE IN ° 2.0°C/W θJT = 5.0°C/W 125 150 Dwg. GP-012B 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 W Copyright © 1986, 2000 Allegro MicroSystems, Inc. Dwg. No. A-13,058 NOTE: Pin 3 must be connected to V operation of input logic gates. ...

Page 3

Characteristic Supply Voltage Range Output Leakage Current Output Sustaining Voltage Output Saturation Voltage Input Voltage Input Current Total Supply Current Clamp Diode Leakage Current Clamp Diode Forward Voltage Turn-On Delay Turn-Off Delay NOTE: Negative current is defined as coming out ...

Page 4

QUAD HIGH-CURRENT, HIGH-VOLTAGE SOURCE DRIVER 0.020 INDEX AREA 1 0.065 0.035 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 ...

Page 5

INDEX AREA 1 1.65 0.89 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 ...

Page 6

QUAD HIGH-CURRENT, HIGH-VOLTAGE SOURCE DRIVER This page intentionally left blank 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 ...

Page 7

... SOURCE DRIVER 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 ...

Page 8

QUAD HIGH-CURRENT, HIGH-VOLTAGE SOURCE DRIVER * 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 ...

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