11

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FN9036.4

January 18, 2005

ISL6550A, ISL6550C

Quad Flat No-Lead Plastic Package (QFN)

Micro Lead Frame Plastic Package (MLFP)

L20.5x5

20 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE

SYMBOL

MILLIMETERS

NOTES

MIN

NOMINAL

MAX

A

0.80

0.90

1.00

-

A1

-

0.02

0.05

-

A2

-

0.65

1.00

9

A3

0.20 REF

9

b

0.23

0.30

0.38

5, 8

D

5.00 BSC

-

D1

4.75 BSC

9

D2

2.95

3.10

3.25

7, 8

E

5.00 BSC

-

E1

4.75 BSC

9

E2

2.95

3.10

3.25

7, 8

e

0.65 BSC

-

k0.20

-

-

-

L

0.35

0.60

0.75

8

N20

2

Nd

5

3

Ne

5

3

P-

-

0.60

9

θ

--

12

9

Rev. 4 11/04

NOTES:

1. Dimensioning and tolerancing conform to ASME Y14.5-1994.

2. N is the number of terminals.

3. Nd and Ne refer to the number of terminals on each D and E.

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

5. Dimension b applies to the metallized terminal and is measured

between 0.15mm and 0.30mm from the terminal tip.

6. The configuration of the pin #1 identifier is optional, but must be

located within the zone indicated. The pin #1 identifier may be

either a mold or mark feature.

7. Dimensions D2 and E2 are for the exposed pads which provide

improved electrical and thermal performance.

8. Nominal dimensions are provided to assist with PCB Land Pattern

Design efforts, see Intersil Technical Brief TB389.

9. Features and dimensions A2, A3, D1, E1, P &

θ are present when

Anvil singulation method is used and not present for saw

singulation.

10. Compliant to JEDEC MO-220VHHC Issue I except for the "b"

dimension.