A3988 查看數據表（PDF） - Allegro MicroSystems
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A3988 Datasheet PDF : 13 Pages
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A3988
Quad DMOS Full Bridge PWM Motor Driver
JP Package, 48 Pin LQFP with Exposed Thermal Pad
0.30
0.50
9.00
1.70
7.00
9.00 7.00
C
B
5.00 8.60
48
12
5.00
8.60
A Terminal #1 mark area
B Exposed thermal pad (bottom surface)
C Reference land pattern layout (reference IPC7351
QFP50P900X900X160-48M); 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)
48
A
12
5.00
48X
0.08 C
0.22
0.50
All dimensions nominal, not for tooling use
(reference JEDEC MS-026 BBCHD)
Dimensions in millimeters
Dimensions exclusive of mold flash, gate burrs, and dambar protrusions
Exact case and lead configuration at supplier discretion within limits shown
7º
04ºº
0.15
5.00
0.60
1.00
0.25
SEATING PLANE
GAGE PLANE
C
SEATING
PLANE
1.60 MAX
1.40
0.10
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 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.
Use of any Allegro product in any Aerospace or Aviation application is strictly prohibited. Allegro’s products may only be used in life support de-
vices or systems with the express written approval of an Allegro Vice President, 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.
Copyright ©2006, 2007, Allegro MicroSystems, Inc.
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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