Data Sheet

LT4423

analog.com

Rev. 0

16 of 18

OUTLINE DIMENSIONS

LDFN Package

10-Lead (3mm × 2mm × 0.75mm)

(Reference DWG # 05-08-1686)

Figure 22. 10-Lead Plastic LDFN

e

DETAIL B

A

PACKAGE TOP VIEW

5

PIN 1

CORNER

Y

X

E

D

DETAIL B

SUBSTRATE

MOLD

CAP

H2

H1

DETAIL C

LDFN 10 1218 REV Ø

PACKAGE BOTTOM VIEW

b

E1

D1

1

5

10

6

SUGGESTED PCB LAYOUT

TOP VIEW

0.000

1.00

0.500

0.500

1.00

0.25 REF

3.00 ±0.05

2.50 ±0.05

6

0.25

0.30

DETAIL A

4

SEE NOTES

PIN 1 NOTCH

0.2 × 45°

SYMBOL

A

A1

L

b

D

E

D1

E1

e

H1

H2

aaa

bbb

ccc

ddd

eee

fff

MIN

0.65

0.01

0.30

0.22

NOM

0.74

0.02

0.40

0.25

2.00

3.00

0.70

2.40

0.50

0.25 REF

0.50 REF

MAX

0.83

0.03

0.50

0.28

0.10

0.10

0.10

0.10

0.15

0.08

DIMENSIONS

A1

DETAIL C

NOTES:

1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M-1994

2. ALL DIMENSIONS ARE IN MILLIMETERS

3. PRIMARY DATUM -Z- IS SEATING PLANE

METAL FEATURES UNDER THE SOLDER MASK OPENING NOT SHOWN

SO AS NOT TO OBSCURE THESE TERMINALS AND HEAT FEATURES

5

4

DETAILS OF PIN 1 IDENTIFIER ARE OPTIONAL, BUT MUST BE

LOCATED WITHIN THE ZONE INDICATED. THE PIN 1 IDENTIFIER

MAY BE EITHER A MOLD OR MARKED FEATURE

6

THE EXPOSED HEAT FEATURE MAY HAVE OPTIONAL CORNER RADII

PACKAGE

OUTLINE

NOTES

PAD DIMENSION

SUBSTRATE THK

MOLD CAP HT

0.70 REF

0.30

DETAIL A

e

L

e/2

2.40

0.70

0.30

2×

aaa Z

M

X Y

Z

ccc