LT3685 LINER [Linear Technology], LT3685 Datasheet - Page 27

• Manufacturer Part Number: LT3685
• Description: 36V, 4A, 1.5MHz Synchronous Step-Down Switching Regulator
• Manufacturer: LINER [Linear Technology]

PACKAGE DESCRIPTION
6.00 ± 0.10
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
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 0.20mm ON ANY SIDE
ON THE TOP AND BOTTOM OF PACKAGE
4.50 ± 0.05
PIN 1
TOP MARK
(NOTE 6)
3.10 ± 0.05
4.00 ± 0.10
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.
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
(Reference LTC DWG # 05-08-1770 Rev A)
26-Lead Plastic QFN (4mm × 6mm)
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
2.64 ± 0.05
0.50 BSC
0.41 ± 0.05
2.18 ± 0.05
(Reference LTC DWG # 05-08-1770 Rev A)
26-Lead Plastic QFN (4mm × 6mm)
0.25 ±0.05
UFEMA Package
0.200 REF
0.00 – 0.05
0.75 ± 0.05
UFE Package
4.50 REF
2.31 ± 0.05
2.36 ± 0.05
2.55 ± 0.05
3.25 ± 0.05
2.64 ± 0.05
4.50 REF
R = 0.10
TYP
26
25
BOTTOM VIEW—EXPOSED PAD
0.70 ±0.05
2.18 ± 0.10
2.36 ± 0.10
2.50 REF
PACKAGE OUTLINE
2.64 ± 0.10
2.64 ± 0.10
2.50 REF
0.41 ± 0.10
2.31 ± 0.10
(UFE26MA) QFN 0608 REV A
PIN 1 NOTCH
R = 0.30 OR
0.35 × 45°
CHAMFER
1
2
0.40 ± 0.10
0.50 BSC
R = 0.125
TYP
0.25 ± 0.05
LT3690
27
3690f