LTC3440_15 Datasheet, PDF (18/20 Pages) Linear Technology – Micropower Synchronous Buck-Boost DC/DC Converter

LTC3440
Package Description
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
DD Package
10-Lead Plastic DFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1699 Rev C)
0.70 ±0.05
R = 0.125
TYP
6
0.40 ±0.10
10
3.55 ±0.05
1.65 ±0.05
2.15 ±0.05 (2 SIDES)
PACKAGE
OUTLINE
0.25 ±0.05
0.50
BSC
2.38 ±0.05
(2 SIDES)
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
PIN 1
TOP MARK
(SEE NOTE 6)
0.200 REF
3.00 ±0.10 1.65 ±0.10
(4 SIDES) (2 SIDES)
PIN 1 NOTCH
R = 0.20 OR
0.35 × 45°
CHAMFER
0.75 ±0.05
(DD) DFN REV C 0310
5
1
0.25 ±0.05
0.50 BSC
0.00 – 0.05
2.38 ±0.10
(2 SIDES)
BOTTOM VIEW—EXPOSED PAD
NOTE:
1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-2).
CHECK THE LTC WEBSITE DATA SHEET FOR CURRENT STATUS OF VARIATION ASSIGNMENT
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 THE
TOP AND BOTTOM OF PACKAGE
0.889 ±0.127
(.035 ±.005)
MS Package
10-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1661 Rev F)
3.00 ±0.102
(.118 ±.004)
(NOTE 3)
10 9 8 7 6
0.497 ±0.076
(.0196 ±.003)
REF
5.10
(.201)
MIN
3.20 – 3.45
(.126 – .136)
0.254
(.010)
DETAIL “A”
0° – 6° TYP
4.90 ±0.152
(.193 ±.006)
0.305 ±0.038
(.0120 ±.0015)
TYP
0.50
(.0197)
BSC
RECOMMENDED SOLDER PAD LAYOUT
GAUGE PLANE
0.18
DETAIL “A”
0.53 ±0.152
(.021 ±.006)
12345
1.10
(.043)
MAX
(.007)
SEATING
PLANE _{0.17 – 0.27}
(.007 – .011)
TYP
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
0.50
(.0197)
BSC
18
For more information www.linear.com/LTC3440
3.00 ±0.102
(.118 ±.004)
(NOTE 4)
0.86
(.034)
REF
0.1016 ±0.0508
(.004 ±.002)
MSOP (MS) 0213 REV F
3440fc