A3980
Automotive DMOS Microstepping Driver
with Translator
Pacakge LP, 28-Pin TSSOP with Exposed Thermal Pad
28
A
9.8 .386
9.6 .378
B
A
B
4.5 .177
4.3 .169
3 .118
NOM
6.6 .260
6.2 .244
8º
0º
0.20 .008
0.09 .004
0.75 .030
0.45 .018
1 .039
REF
12
5.1 .200
NOM
0.25 .010
28X
0.10 [.004] C
28X
0.30
0.19
.012
.007
0.10 [.004] M C A B
0.65 .026
C
SEATING
PLANE
1.20 .047
MAX
0.15 .006
0.00 .000
SEATING PLANE
GAUGE PLANE
1.85 .073
NOM
0.45 .018
NOM
28
2X0.20±0.05 .008±.002
C
MIN
26X0.20±0.05 .008±.002
MIN
0.65 .026
NOM
3 .118
NOM
5.9 .232
NOM
Preliminary dimensions, for reference only
(reference JEDEC MO-153 AET)
Dimensions in millimeters
U.S. Customary dimensions (in.) in brackets, for reference only
Dimensions exclusive of mold flash, gate burrs, and dambar protrusions
Exact case and lead configuration at supplier discretion within limits shown
A Terminal #1 mark area
B Exposed thermal pad (bottom surface) U.S. Customary dimensions controlling
C Reference land pattern layout (reference IPC7351
TSOP65P640X120-29M); adjust as necessary to meet application
process requirements and PCB layout tolerances; when
mounting on a multilayer PCB, thermal vias at the exposed
thermal pad land can improve thermal dissipation
(reference EIA/JEDEC Standard JESD51-5)
12
5.1 .200
NOM
The products described here are manufactured under one or more U.S. patents or U.S. patents pending.
Allegro® MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to
permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that
the information being relied upon is current.
Allegro products are not authorized for use as critical components in life-support devices or systems without express written approval.
The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its
use; nor for any infringement of patents or other rights of third parties which may result from its use.
Copyright©2003, 2006 Allegro MicroSystems, Inc.
Allegro MicroSystems, Inc.
18
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com