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LT1674 датащи(PDF) 21 Page - Linear Technology

номер детали LT1674
подробное описание детали  Auto-Polarity, Ultralow Voltage Step-Up Converter
PDF  24 Pages
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производитель  LINER [Linear Technology]
домашняя страница  http://www.linear.com
Logo LINER - Linear Technology

LT1674 датащи(HTML) 21 Page - Linear Technology

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LTC3109
21
3109fa
PACKAGE DESCRIPTION
4.00 ±0.10
4.00 ±0.10
NOTE:
1. DRAWING IS PROPOSED TO BE MADE A JEDEC PACKAGE OUTLINE MO-220
VARIATION (WGGD-1)—TO BE APPROVED
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
PIN 1
TOP MARK
(NOTE 6)
0.40 ±0.10
20
19
1
2
BOTTOM VIEW—EXPOSED PAD
2.00 REF
2.45 ±0.10
0.75 ±0.05
R = 0.115
TYP
R = 0.05
TYP
0.25 ±0.05
0.50 BSC
0.200 REF
0.00 – 0.05
(UF20) QFN 01-07 REV A
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
0.70 ±0.05
0.25 ±0.05
0.50 BSC
2.00 REF
2.45 ±0.05
3.10 ±0.05
4.50 ±0.05
PACKAGE OUTLINE
PIN 1 NOTCH
R = 0.20 TYP
OR 0.35
45°
CHAMFER
2.45 ±0.10
2.45 ±0.05
UF Package
20-Lead Plastic QFN (4mm
4mm)
(Reference LTC DWG # 05-08-1710 Rev A)
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.



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