www.ams.com/LED-Driver-ICs/AS1109

Revision 1.21

22 - 24

AS1109

Datasheet - Pack a ge Drawin gs and Ma r k ings

Figure 27. 16-pin QFN 4x4mm Package

Marking: YYWWQZZ.

YY

WW

Q

ZZ

Last two digits of the current year

Manufacturing Week

Plant identifier

Traceability code

Symbol

Min

Nom

Max

A

0.70

0.75

0.80

A1

0

0.02

0.05

A3

0.20 REF

L

0.45

0.55

0.65

b

0.25

0.30

0.35

D

4.00 BSC

E

4.00 BSC

e

0.65 BSC

D2

2.00

2.15

2.25

E2

2.00

2.15

2.25

aaa

-

0.15

-

bbb

-

0.10

-

ccc

-

0.10

-

ddd

-

0.05

-

eee

-

0.08

-

fff

-

0.10

-

N16

Notes:

1. Dimensioning & tolerancing conform to ASME Y14.5M-1994.

2. All dimensions are in millimeters. Angles are in degrees.

3. Coplanarity applies to the exposed heat slug as well as the terminal.

4. Radius on terminal is optional.

5. N is the total number of terminals.

AS

1109B

YYWW

QZZ