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A3979 Datasheet(PDF) 6 Page - Allegro MicroSystems

Part No. A3979
Description  Microstepping DMOS Driver with Translator
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A3979 Datasheet(HTML) 6 Page - Allegro MicroSystems

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DMOS Microstepping Driver with Translator
A3979
6
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Characteristic
Symbol
Test Conditions*
Value
Units
Package Thermal Resistance
RθJA
Two-layer PCB with 3.8 in.2 of copper area on each side
connected with thermal vias and to device exposed pad
32
ºC/W
High-K PCB (multilayer with significant copper areas,
based on JEDEC standard)
28
ºC/W
*Additional thermal information available on Allegro Web site.
THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information
Temperature (°C)
0.0
0.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
1.0
1.5
20
40
60
80
100
120
140
160
Maximum Power Dissipation, PD(max)
(R
θJA
= 32
ºC/W)
(R
θJA
= 28
ºC/W)
High-K
PCB
2-Layer
PCB
with
3.8
in 2
copper
per
side


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