Full-Bridge PWM Motor Driver
A4973
10
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
LB package 16-pin SOICW
9.50
0.65
2.25
1.27
C
SEATING
PLANE
C0.10
16X
1.27
0.25
0.20 ±0.10
0.41 ±0.10
2.65 MAX
10.30±0.33
7.50±0.10
4° ±4
0.27
+0.07
–0.06
0.84
+0.44
–0.43
10.30±0.20
21
16
GAUGE PLANE
SEATING PLANE
For Reference Only
Pins 4 and 5, and 12 and 13 internally fused
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
A
Terminal #1 mark area
A
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
B
PCB Layout Reference View
B package 16-pin DIP
2
19.05±0.25
5.33 MAX
0.46 ±0.12
1.27 MIN
1
16
A
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
6.35
+0.76
–0.25
3.30
+0.51
–0.38
10.92
+0.38
–0.25
1.52
+0.25
–0.38
0.38
+0.10
–0.05
7.62
2.54
For Reference Only
(reference JEDEC MS-001 BB)
Dimensions in millimeters
Full-Bridge PWM Motor Driver
A4973
11
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Copyright ©2009-2013, Allegro MicroSystems, LLC
Allegro MicroSystems, LLC reserves the right to make, from time to time, such de par tures from the detail spec i fi ca tions as may be required to
permit improvements in the per for mance, 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 in for ma tion in clud ed herein is believed to be ac cu rate and reliable. How ev er, Allegro MicroSystems, LLC assumes no re spon si bil i ty for its use;
nor for any in fringe ment 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
Revision History
Revision Revision Date Description of Revision
Rev. 1 October TBD, 2012 Update Absolute Maximum Ratings

A4973SB-T

Mfr. #:
Manufacturer:
Description:
IC MTR DRVR BIPOLAR 3-5.5V 16DIP
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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