LT1638 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
LT1638
Linear Technology
'LT1638' PDF : 18 Pages View PDF
LT1638/LT1639
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
DD Package
8-Lead Plastic DFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1698 Rev C)
0.70 p0.05
R = 0.125
TYP
5
0.40 p 0.10
8
3.5 p0.05
1.65 p0.05
2.10 p0.05 (2 SIDES)
PACKAGE
OUTLINE
PIN 1
TOP MARK
(NOTE 6)
0.25 p 0.05
0.50
BSC
2.38 p0.05
0.200 REF
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
NOTE:
1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-1)
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION
ON TOP AND BOTTOM OF PACKAGE
3.00 p0.10
(4 SIDES)
1.65 p 0.10
(2 SIDES)
0.75 p0.05
0.00 – 0.05
4
0.25 p 0.05
(DD8) DFN 0509 REV C
1
0.50 BSC
2.38 p0.10
BOTTOM VIEW—EXPOSED PAD
MS8 Package
8-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1660 Rev F)
3.00 p 0.102
(.118 p .004)
(NOTE 3)
8 7 65
0.52
(.0205)
REF
0.889 p 0.127
(.035 p .005)
0.254
(.010)
DETAIL “Aâ€
0o – 6o TYP
4.90 p 0.152
(.193 p .006)
GAUGE PLANE
5.23
(.206)
MIN
3.20 – 3.45
(.126 – .136)
0.53 p 0.152
(.021 p .006)
DETAIL “Aâ€
0.42 p 0.038
(.0165 p .0015)
TYP
0.65
(.0256)
BSC
RECOMMENDED SOLDER PAD LAYOUT
0.18
(.007)
SEATING
PLANE
NOTE:
1. DIMENSIONS IN MILLIMETER/(INCH)
2. DRAWING NOT TO SCALE
3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS.
MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX
1 234
1.10
(.043)
MAX
0.22 – 0.38
(.009 – .015)
TYP
0.65
(.0256)
BSC
14
3.00 p 0.102
(.118 p .004)
(NOTE 4)
0.86
(.034)
REF
0.1016 p 0.0508
(.004 p .002)
MSOP (MS8) 0307 REV F
16389fg
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