A3955SLB View Datasheet(PDF) - Allegro MicroSystems
Part Name
Description
MFG CO.
'A3955SLB' PDF : 13 Pages View PDF
A3955
Full-Bridge PWM Microstepping Motor Driver
B package 16-pin DIP
.750 [19.05]
16
A
12
.250 [6.35]
.430 [10.92]
.010 [0.25]
.300 [7.62]
.005 [1.27]
.060 [1.52]
.018 [0.46]
.100 [2.54]
.210 [5.33] MAX
.130 [3.30]
All dimensions nominal, not for tooling use
(reference JEDEC MS-001 BB)
Dimensions in inches, metric dimensions (mm) 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
10.30
16
LB package 16-pin SOICW
0.65
1.27
4º
0.27
A
12
16X
0.10 C
0.41
1.27
7.50 10.30
SEATING C
PLANE
2.65 MAX
0.20
9.50
0.84
2.25
0.25
SEATING PLANE
GAUGE PLANE
B PCB Layout Reference View
All dimensions nominal, not for tooling use
Dimensions in millimeters
(reference JEDEC MS-013 AA)
Dimensions exclusive of mold flash, gate burrs, and dambar protrusions
Exact case and lead configuration at supplier discretion within limits shown
Pins 4 and 13 fused internally
A Terminal #1 mark area
B Reference pad layout (reference IPC SOIC127P1030X265-16M)
All pads a minimum of 0.20 mm from all adjacent pads; adjust as necessary
to meet application process requirements and PCB layout tolerances
Copyright ©1997-2007, Allegro MicroSystems, Inc.
The products described here are manufactured under one or more U.S. patents, including U. S. Patent No. 5,684,427, 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 per-
mit 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’s products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the
failure of that life support device or system, or to affect the safety or effectiveness of that device or system.
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.
For the latest version of this document, visit our website:
www.allegromicro.com
Allegro MicroSystems, Inc.
13
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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