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ELMOS Semiconductor AG

Data Sheet

QM-No.: 25DS0064E.01

PRELIMINARY INFORMATION - MAY 29, 2012

This document contains information on a pre-production product. ELMOS Semiconductor AG reserves the right to change specifications and information herein without notice.

LOW QUIESCENT CURRENT STEP DOWN CONVERTER FAMILY

11.4 Package Outline QFN20L4

Date : 05.01.2012

Author: ASto

20 Lead Quad Flat Non Leaded Package

(QFN20L4)

QM-No.: 08SP0689.02

Package Outline and Dimensions are according JEDEC MO-220 K, variant VGGD-5

Description

Symbol

mm

inch

min

typ

max

min

typ

max

Package height

A

0.80

0.90

1.00

0.031

0.035

0.039

Stand off

A1

0.00

0.02

0.05

0.000

0.00079

0.002

Thickness of terminal leads, including lead finish

A3

--

0.20 REF

--

--

0.0079

REF

--

Width of terminal leads

b

0.18

0.25

0.30

0.0071

0.0098

0.012

Package length / width

D

/ E

--

4.00 BSC

--

--

0.157

BSC

--

Length / width of exposed pad

D2

/ E2

2.50

2.65

2.80

0.098

0.104

0.110

Lead pitch

e

--

0.50 BSC

--

--

0.020 BSC

--

Length of terminal for soldering to substrate

L

0.35

0.40

0.45

0.014

0.016

0.018

Number of terminal positions

N

20

20

Note: the mm values are valid, the inch values contains rounding errors

Note 1: for assembler specific pin1 identification please see QM-document 08SP0363.xx (Pin 1 Specification)

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