AS3691

Datasheet

www.austriamicrosystems.com (ptr)

Revision 2.3

3 - 22

Table of Contents

1

General Description ......................................................................................................................................... 1

2

Key Features.................................................................................................................................................... 1

3

Applications...................................................................................................................................................... 1

4

Application Diagrams ....................................................................................................................................... 1

5

Pinout............................................................................................................................................................... 4

5.1

Pin Assignments ....................................................................................................................................... 4

5.2

Pin Descriptions........................................................................................................................................ 4

6

Characteristics ................................................................................................................................................. 6

6.1

Absolute Maximum Ratings ...................................................................................................................... 6

6.2

Operating Conditions ................................................................................................................................ 6

6.3

Electrical Characteristics........................................................................................................................... 7

7

Typical Operation Characteristics .................................................................................................................... 8

8

Detailed Functional Description ..................................................................................................................... 12

8.1

Shunt Regulator...................................................................................................................................... 12

8.2

Overtemperature Protection.................................................................................................................... 12

8.3

Automatic Supply Regulation.................................................................................................................. 13

9

Application Information .................................................................................................................................. 14

9.1

Design Example...................................................................................................................................... 15

9.1.1

Using Automatic Supply Regulation................................................................................................. 16

9.2

Layout Recommendations ...................................................................................................................... 16

10

Package Drawings and Markings ............................................................................................................... 17

10.1 QFN 4x4 Package Drawings and Marking .............................................................................................. 17

10.2 ePTSSOP Package Drawings and Marking............................................................................................ 19

10.3 DIE Delivery............................................................................................................................................ 20

11

Ordering Information .................................................................................................................................. 21

Revision History

Revision

Date

Owner

Description

2.3

30.10.2007

ptr

- Added Trays as delivery option (order code AS3691A-

ZQFT)