A3931 Allegro MicroSystems, Inc., A3931 Datasheet - Page 7

• Manufacturer Part Number: A3931
• Description: Automotive 3-Phase BLDC Controller and MOSFET Driver
• Manufacturer: Allegro MicroSystems, Inc.

A3930
A3931
THERMAL CHARACTERISTICS
Subject to Change Without Notice
Package Thermal Resistance
Die-to-Exposed Pad Thermal Resis-
tance
*Additional thermal information available on Allegro Web site.
Preliminary Data Sheet
April 6, 2006
Characteristic
and
Power Dissipation verus Ambient Temperature
may require derating at maximum conditions, see Applications Information section
6.0
5.0
4.0
3.0
2.0
1.0
0
25
Symbol
R
R
Thermal Characteristics
θJA
θJP
AMBIENT TEMPERATURE IN °C
50
4-layer PCB, based on JEDEC standard
2-layer PCB, with 3 in.
by thermal vias
Automotive 3-Phase BLDC Controller
75
100
Test Conditions*
2
of copper area each side connected
125
and MOSFET Driver
150
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
Value Units
23
44
2
ºC/W
ºC/W
ºC/W
7