A3982SLB-T View Datasheet(PDF) - Allegro MicroSystems
Part Name
Description
MFG CO.
'A3982SLB-T' PDF : 11 Pages View PDF
A3982
DMOS Stepper Motor Driver with Translator
THERMAL CHARACTERISTICS
Characteristic
Package Thermal Resistance
Symbol
RθJA
Test Conditions*
Value Units
One-layer PCB, one-sided with copper limited to solder pads
77 ºC/W
One-layer PCB, two-sided with copper limited to solder pads and
3.57 in.2 of copper area on each side, connected to PGND pins
45 ºC/W
Four-layer PCB, based on JEDEC standard
35 ºC/W
*Additional thermal information available on Allegro Web site.
Power Dissipation versus Ambient Temperature
4.00
3.50
3.00
2.50
2.00
1.50
1.00
R
θJA
R
= 35 ºC/W
θJA = 45 ºC/W
R
θJA = 77 ºC/W
0.50
0
20 40 60 80 100 120 140 160
Temperature, TA (°C)
Allegro MicroSystems, LLC
5
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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