Datasheet
LTM4628
33
4628fe
For more information www.linear.com/LTM4628
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M-1994
2. ALL DIMENSIONS ARE IN MILLIMETERS
LAND DESIGNATION PER JESD MO-222, SPP-010
5. PRIMARY DATUM -Z- IS SEATING PLANE
6. THE TOTAL NUMBER OF PADS: 144
4
3
DETAILS OF PAD #1 IDENTIFIER ARE OPTIONAL,
BUT MUST BE LOCATED WITHIN THE ZONE INDICATED.
THE PAD #1 IDENTIFIER MAY BE EITHER A MOLD OR
MARKED FEATURE
SYMBOL
aaa
bbb
eee
TOLERANCE
0.15
0.10
0.05
4.22 – 4.42
DETAIL B
DETAIL B
SUBSTRATE
MOLD
CAP
0.27 – 0.37
3.95 – 4.05
bbb Z
Z
15
BSC
PACKAGE TOP VIEW
15
BSC
4
PAD 1
CORNER
X
Y
aaa Z
aaa Z
DETAIL A
13.97
BSC
1.27
BSC
13.97
BSC
0.12 – 0.28
PACKAGE BOTTOM VIEW
3
PADS
SEE NOTES
SUGGESTED PCB LAYOUT
TOP VIEW
0.0000
0.6350
0.6350
1.9050
1.9050
3.1750
3.1750
4.4450
4.4450
5.7150
5.7150
6.9850
6.9850
6.9850
5.7150
5.7150
4.4450
4.4450
3.1750
3.1750
1.9050
1.9050
0.6350
0.6350
0.0000
6.9850
LGA 144 1112 REV A
LTMXXXXXX
µModule
TRAY PIN 1
BEVEL
PACKAGE IN TRAY LOADING ORIENTATION
COMPONENT
PIN “A1”
DIA 0.630
PAD 1
3x, C (0.22 x45°)
DETAIL A
0.630 ±0.025 SQ. 143x
S
YXeee
L
K
J
H
G
F
E
D
C
B
M
A
1234567810 91112
LGA Package
144-Lead (15mm × 15mm × 4.32mm)
(Reference LTC DWG # 05-08-1843 Rev A)
7
SEE NOTES
7 PACKAGE ROW AND COLUMN LABELING MAY VARY
AMONG µModule PRODUCTS. REVIEW EACH PACKAGE
LAYOUT CAREFULLY
!