LT3840
package DescripTion
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
UFE Package
38-Lead Plastic QFN (4mm × 6mm)
(Reference LTC DWG # 05-08-1750 Rev B)
0.70 ±0.05
4.50 ±0.05
3.10 ±0.05
2.40 REF
2.65 ±0.05
4.65 ±0.05
PACKAGE OUTLINE
0.20 ±0.05
0.40 BSC
4.40 REF
5.10 ±0.05
6.50 ±0.05
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
PIN 1 NOTCH
R = 0.30 OR
0.35 × 45°
CHAMFER
R = 0.10
0.75 ±0.05
2.40 REF
TYP
4.00 ±0.10
37 38
0.40 ±0.10
PIN 1
TOP MARK
(NOTE 6)
1
2
4.65 ±0.10
4.40 REF
6.00 ±0.10
2.65 ±0.10
(UFE38) QFN 0708 REV B
0.200 REF
R = 0.115
TYP
0.20 ±0.05
0.40 BSC
0.00 – 0.05
BOTTOM VIEW—EXPOSED PAD
NOTE:
1. DRAWING IS NOT A JEDEC PACKAGE OUTLINE
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
3840fa
22
For more information www.linear.com/LT3840
Linear [ Linear ]
