LTC3851 LINER [Linear Technology], LTC3851 Datasheet - Page 27

• Manufacturer Part Number: LTC3851
• Description: Synchronous Step-Down Switching Regulator Controller
• Manufacturer: LINER [Linear Technology]

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
(0.178 – 0.249)
.007 – .0098
NOTE:
1. CONTROLLING DIMENSION: INCHES
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
* DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
.254 MIN
.0165 .0015
RECOMMENDED SOLDER PAD LAYOUT
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.
(0.406 – 1.270)
.016 – .050
0.50 BSC
(MILLIMETERS)
0.25 0.05
0.70 0.05
INCHES
PACKAGE
OUTLINE
16-Lead Plastic SSOP (Narrow .150 Inch)
16-Lead Plastic QFN (3mm × 3mm)
.150 – .165
.045 .005
(Reference LTC DWG # 05-08-1641)
(Reference LTC DWG # 05-08-1691)
0 – 8 TYP
(0.38 0.10)
.015 .004
.0250 BSC
PIN 1
TOP MARK
(NOTE 6)
3.00 0.10
(4 SIDES)
GN Package
UD Package
45
(5.817 – 6.198)
(0.203 – 0.305)
.229 – .244
.008 – .012
TYP
.0532 – .0688
(1.35 – 1.75)
0.75 0.05
16 15 14 13
1
2 3
(4.801 – 4.978)
.189 – .196*
1.45 0.10
(4-SIDES)
0.200 REF
0.00 – 0.05
4
12 11 10 9
5 6 7
(0.635)
.0250
BSC
BOTTOM VIEW—EXPOSED PAD
R = 0.115
(0.102 – 0.249)
8
.004 – .0098
TYP
(3.810 – 3.988)
.150 – .157**
GN16 (SSOP) 0204
(0.229)
.009
REF
15 16
LTC3851
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
27
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