LTC3305_15 Datasheet, PDF (27/28 Pages) Linear Technology – Lead-Acid Battery Balancer

Package Description
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
FE Package
38-Lead Plastic TSSOP (4.4mm)
(Reference LTC DWG # 05-08-1772 Rev C)
Exposed Pad Variation AA
4.75 REF
6.60 ±0.10
4.50 REF
SEE NOTE 4
2.74 REF
0.315 ±0.05
1.05 ±0.10
0.50 BSC
RECOMMENDED SOLDER PAD LAYOUT
4.30 – 4.50*
(.169 – .177)
0.25
REF
0° – 8°
9.60 – 9.80*
(.378 – .386)
38
4.75
(.187)
REF
1
0.09 – 0.20
(.0035 – .0079)
0.50 – 0.75
(.020 – .030)
NOTE:
1. CONTROLLING DIMENSION: MILLIMETERS
2. DIMENSIONS ARE IN _MILLIMETERS
(INCHES)
3. DRAWING NOT TO SCALE
0.50
(.0196)
BSC
0.17 – 0.27
(.0067 – .0106)
TYP
4. RECOMMENDED MINIMUM PCB METAL SIZE
FOR EXPOSED PAD ATTACHMENT
*DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.150mm (.006") PER SIDE
LTC3305
20
2.74
(.108)
REF
6.40
(.252)
BSC
19
1.20
(.047)
MAX
0.05 – 0.15
(.002 – .006)
FE38 (AA) TSSOP REV C 0910
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3305f
27