Three-Phase Power MOSFET Controller
A3938
11
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
LD Package, 38-pin TSSOP
1.20 MAX
4º
6.00
1.60
SEATING
PLANE
0.50
C0.10
38X
C
0.30
0.10 ±0.05
0.22 ±0.05
4.40 ±0.10
6.40 ±0.20
9.70 ±0.10
0.15
+0.06
–0.05
21
38
21
38
GAUGE PLANE
SEATING PLANE
A
A
Terminal #1 mark area
All dimensions nominal, not for tooling use
(reference JEDEC MO-153 BD-1)
Dimensions in millimeters
B
B
Reference pad layout (reference IPC SOP50P640X110-38M)
All pads a minimum of 0.20 mm from all adjacent pads; adjust as necessary
to meet application process requirements and PCB layout tolerances
PCB Layout Reference View
0.50
0.25
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