LTC4449 datasheet(36/38 Pages) LINER

36 / 38 page

LTC3774

3774fc

For more information www.linear.com/LTC3774

PACKAGE DESCRIPTION

UHE Package

36-Lead Plastic QFN (5mm × 6mm)

(Reference LTC DWG # 05-08-1876 Rev Ø)

5.00 ±0.10

NOTE:

1. DRAWING IS NOT A JEDEC PACKAGE OUTLINE

2. DRAWING NOT TO SCALE

3. ALL DIMENSIONS ARE IN MILLIMETERS

PIN 1

TOP MARK

(SEE NOTE 6)

BOTTOM VIEW—EXPOSED PAD

4.50 REF

6.00 ±0.10

R = 0.125

TYP

0.25 ±0.05

4.60 ±0.10

3.60

±0.10

(UHE36) QFN 0410 REV Ø

0.50 BSC

4.60 ±0.05

3.60 ±0.05

0.75 ±0.05

0.00 – 0.05

0.200 REF

RECOMMENDED SOLDER PAD LAYOUT

APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED

3.50 REF

0.40 ±0.10

0.70 ±0.05

0.50 BSC

4.50 REF

3.50 REF

4.10 ±0.05

5.50 ±0.05

5.10 ±0.05

6.50 ±0.05

0.25 ±0.05

PACKAGE

OUTLINE

4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE

MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.20mm 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

PIN 1 NOTCH

R = 0.30 TYP

OR 0.35 × 45°

CHAMFER

R = 0.10

TYP

Please refer to http://www.linear.com/product/LTC3774#packaging for the most recent package drawings.

LTC4449 Fiches technique(PDF) 36 Page - Linear Technology

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