ltc3891 Linear Technology Corporation, ltc3891 Datasheet - Page 31

• Manufacturer Part Number: ltc3891
• Description: Ltc3891 - Low Iq, 60v Synchronous Step-down Controller
• Manufacturer: Linear Technology Corporation

PACKAGE DESCRIPTION
6.60 ±0.10
(.0035 – .0079)
0.09 – 0.20
NOTE:
1. CONTROLLING DIMENSION: MILLIMETERS
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
4.50 ±0.10
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.
(.169 – .177)
4.30 – 4.50*
(.020 – .030)
0.50 – 0.75
SEE NOTE 4
(Reference LTC DWG # 05-08-1663 Rev H)
(.152)
MILLIMETERS
3.86
20-Lead Plastic TSSOP (4.4mm)
(INCHES)
0.65 BSC
Exposed Pad Variation CB
(Reference LTC DWG # 05-08-1663 Rev H)
20-Lead Plastic TSSOP (4.4mm)
0.45 ±0.05
FE Package
Exposed Pad Variation CB
(.108)
0.25
REF
2.74
1.05 ±0.10
0° – 8°
*DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH
4. RECOMMENDED MINIMUM PCB METAL SIZE
SHALL NOT EXCEED 0.150mm (.006") PER SIDE
FE Package
FOR EXPOSED PAD ATTACHMENT
(.0256)
0.65
BSC
20 1918 17 16 15
1
(.0077 – .0118)
0.195 – 0.30
2
TYP
3 4 5 6 7 8 9 10
(.252 – .260)
6.40 – 6.60*
(.152)
3.86
14 13
12
FE20 (CB) TSSOP REV H 0910
11
(.002 – .006)
0.05 – 0.15
(.108)
(.047)
2.74
MAX
1.20
(.252)
6.40
BSC
LTC3891
31
3891f