UDN2998W Allegro MicroSystems, Inc., UDN2998W Datasheet

UDN2998W

Manufacturer Part Number

UDN2998W

Description

Dual Full-bridge Motor Driver

Manufacturer

Allegro MicroSystems, Inc.

Datasheet

1.UDN2998W.pdf (6 pages)

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Supply Voltage, V

Output Current, I

Sink Driver Emitter Voltage, V

Logic Input Voltage Range,

Package Power Dissipation,

Operating Temperature Range,

Storage Temperature Range,

NOTE: Output current rating may be limited

by chopping frequency, ambient tempera-

ture, air flow, or heat sinking. Under any set

of conditions, do not exceed the specified

current rating or a junction temperature of

+150 C.

(peak) ...........................................

PHASE

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

............................. -55 C to +150 C

.............................. -20 C to +85 C

or V

ENABLE

OUT

(continuous) .....

.......................... 50 V

....... -0.3 V to 15 V

...... 1.5 V

Dwg. No. W-106

2 A

3 A

2998

motors, or stepper motors, the UDN2998W dual full-bridge driver will

operate inductive loads up to 50 V with continuous output currents of

up to 2 A per bridge or peak (start-up) currents to 3 A. The control

inputs are compatible with TTL, DTL, and 5 V CMOS logic. Except

for a common supply voltage and thermal shutdown, the two drivers in

each package are completely independent.

circuit is provided and the sink driver emitters are pinned out for

connection to external current-sensing resistors. The chopper drive

mode is characterized by low power dissipation levels and maximum

efficiency. A PHASE input to each bridge determines load-current

direction.

clamp and flyback diodes for each bridge are provided. A thermal

shutdown circuit disables the load drive if chip temperature rating

(package power dissipation) is exceeded. Internally-generated delays

provide crossover-current protection.

package for high power capabilities. Driving either of the bridges at

the full 2 A dc rating requires the use of an external heat sink. The tab

is at ground potential and needs no insulation.

Always order by complete part number: UDN2998W .

As an interface between low-level logic and solenoids, dc (brush)

For external PWM control, an Output Enable for each bridge

Extensive circuit protection is provided on-chip. Both ground-

The UDN2998W is packaged in a 12-pin single in-line power-tab

Output Voltage to 50 V

Integral Output Suppression Diodes

Output Current Sensing

TTL/CMOS Compatible Inputs

Internal Thermal Shutdown Circuitry

Crossover-Current Protected

Automotive Capable

3 A Peak Output Current

DUAL FULL-BRIDGE

MOTOR DRIVER

Related parts for UDN2998W

UDN2998W Summary of contents

Page 1

... C. 2998 As an interface between low-level logic and solenoids, dc (brush) motors, or stepper motors, the UDN2998W dual full-bridge driver will operate inductive loads with continuous output currents per bridge or peak (start-up) currents The control inputs are compatible with TTL, DTL, and 5 V CMOS logic. Except for a common supply voltage and thermal shutdown, the two drivers in each package are completely independent ...

Page 2

... To maintain isolation between integrated circuit components and to provide for normal transistor operation, the ground tab must be connected to the most negative point in the external circuit. = 2.0 C/W JT 125 150 Dwg. GP-012B 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1985, 2002 Allegro MicroSystems, Inc. BB Dwg. No. W-107A ...

Page 3

NOTES:1. Each driver is tested separately. 2. Test is performed with V PHASE 3. Negative current is defined as coming out of (sourcing) the specified device pin. www.allegromicro.com = 0.8 V and then repeated for V PHASE DUAL FULL-BRIDGE MOTOR ...

Page 4

DUAL FULL-BRIDGE MOTOR DRIVER V ENABLE V PHASE + I OUT – +5V A INPUT 0 +5V B INPUT 90 90% Dwg. No. A-12,454 115 Northeast Cutoff, Box 15036 ...

Page 5

INDEX AREA 1 0.065 0.035 www.allegromicro.com 1.260 1.240 0.775 0.245 0.765 0.225 0.140 0.365 12 0.030 0.020 0.100 0.010 NOTES: 1. Lead thickness is measured at seating plane or below. 2. Lead spacing tolerance is non-cumulative. 3. Exact body ...

Page 6

... 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 ...

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