UDN2998W

Manufacturer Part NumberUDN2998W
DescriptionDual Full-bridge Motor Driver
ManufacturerAllegro MicroSystems, Inc.
UDN2998W datasheet
 
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Dwg. No. W-106
Supply Voltage, V
.......................... 50 V
BB
Output Current, I
(continuous) .....
OUT
(peak) ...........................................
Sink Driver Emitter Voltage, V
...... 1.5 V
E
Logic Input Voltage Range,
V
or V
....... -0.3 V to 15 V
PHASE
ENABLE
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
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.
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 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.
For external PWM control, an Output Enable for each bridge
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.
Extensive circuit protection is provided on-chip. Both ground-
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.
The UDN2998W is packaged in a 12-pin single in-line power-tab
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.
2 A
3 A
3 A Peak Output Current
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
Always order by complete part number: UDN2998W .
DUAL FULL-BRIDGE
MOTOR DRIVER

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 ...