Data Sheet

DMOS Microstepping Driver with Translator
and Overcurrent Protection
A4988
5
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
THERMAL CHARACTERISTICS
Characteristic Symbol Test Conditions* Value Units
Package Thermal Resistance
R
JA
Four-layer PCB, based on JEDEC standard 32 ºC/W
*Additional thermal information available on Allegro Web site.
Temperature, T
A
(°C)
Power Dissipation, P
D
(W)
0
0.50
1.50
2.00
2.50
3.00
3.50
4.00
1.00
20 40 60 80 100 120 140 160
Power Dissipation versus Ambient Temperature
R
QJA
= 32 ºC/W