Datasheet

LTM4620A
37
4620afb
For more information www.linear.com/LTM4620A
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
PACKAGE TOP VIEW
4
PAD 1
CORNER
DETAIL A
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
LTMXXXXXX
µModule
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 × 4.41mm)
(Reference LTC DWG # 05-08-1844 Rev C)
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
LGA 144 1112 REV C
TRAY PIN 1
BEVEL
PACKAGE IN TRAY LOADING ORIENTATION
COMPONENT
PIN “A1”
SYMBOL
A
b
D
E
e F
G
H1 H2
aaa
bbb
eee
MIN
4.31 0.60 0.36 3.95
NOM
4.41 0.63
15.00 15.00
1.27
13.97 13.97
0.41 4.00
MAX
4.51 0.66 0.46 4.05 0.15 0.10 0.05
NOTES
DIMENSIONS
TOTAL NUMBER OF LGA PADS: 144
X
Y
aaa Z
aaa Z
E
D
DETAIL B
bbb Z
DETAIL B
SUBSTRATE
MOLD
CAP
Z
H2
H1
A
b
e
G
e
F
b
7 PACKAGE ROW AND COLUMN LABELING MAY VARY
AMONG µModule PRODUCTS. REVIEW EACH PACKAGE LAYOUT CAREFULLY
!
7
SEE NOTES