lt3645 Linear Technology Corporation, lt3645 Datasheet - Page 23

• Manufacturer Part Number: lt3645
• Description: 36v 500ma Step-down Regulator And 200ma Ldo
• Manufacturer: Linear Technology Corporation

PACKAGE DESCRIPTION
3.50 0.05
2.10 0.05
1.45 0.05
(4 SIDES)
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
NOTE:
1. DRAWING CONFORMS TO JEDEC PACKAGE OUTLINE MO-220 VARIATION (WEED-2)
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
ON THE TOP AND BOTTOM OF PACKAGE
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
PIN 1
TOP MARK
(NOTE 6)
3.00 0.10
(4 SIDES)
16-Lead Plastic QFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1691)
0.50 BSC
0.25 0.05
0.70 0.05
PACKAGE OUTLINE
0.75 0.05
UD Package
1.45 0.10
(4-SIDES)
0.200 REF
0.00 – 0.05
BOTTOM VIEW—EXPOSED PAD
R = 0.115
TYP
15 16
0.50 BSC
0.25 0.05
1
2
(UD16) QFN 0904
0.40 0.10
PIN 1 NOTCH R = 0.20 TYP
OR 0.25 45 CHAMFER
LT3645
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3645f