A4982_V4 Datasheet, PDF (5/20 Pages) Allegro MicroSystems – DMOS Microstepping Driver with Translator And Overcurrent Protection

A4982
DMOS Microstepping Driver with Translator
And Overcurrent Protection
THERMAL CHARACTERISTICS may require derating at maximum conditions
Characteristic
Symbol
Test Conditions*
Package Thermal Resistance
ET package; estimated, on 4-layer PCB, based on JEDEC standard
R_θJA
LP package; on 4-layer PCB, based on JEDEC standard
Value Units
32 ºC/W
28 ºC/W
*In still air. Additional thermal information available on Allegro Web site.
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
20
Maximum Power Dissipation, P_D(max)
(R
(R
θ_JA
=
θ_{JA = 28}
31 _ºC/W)
ºC/W)
40 60 80 100 120 140 160 180
Temperature (°C)
Allegro MicroSystems, Inc.
5
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com