AS3676 datasheet(4/92 Pages) AMSCO

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AS3676

Datasheet - A p p l i c a t i o n s

Contents

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

2 Key Features

.......................................................................................................................................1

3 Applications

........................................................................................................................................1

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

4.1 Pin Definitions

..............................................................................................................................................5

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

6 Electrical Characteristics

...................................................................................................................6

7 Typical Operating Characteristics .....................................................................................................7

8 Detailed Description

...........................................................................................................................9

8.1 Analog LDO ..................................................................................................................................................9

8.2 Step Up DC/DC Converter

.........................................................................................................................11

8.3 Charge Pump

.............................................................................................................................................16

8.4 Current Sinks

.............................................................................................................................................25

8.5 General Purpose Input / Output

.................................................................................................................56

8.6 LED Test .....................................................................................................................................................62

8.7 Analog-to-Digital Converter ........................................................................................................................64

8.8 Audio controlled LEDs ................................................................................................................................67

8.9 Power-On Reset .........................................................................................................................................74

8.10 Temperature Supervision

...........................................................................................................................75

8.11 Serial Interface

...........................................................................................................................................76

8.12 Operating Modes

.......................................................................................................................................79

9 Register Map

.....................................................................................................................................81

10 External Components

.....................................................................................................................85

11 Package Drawings and Markings

..................................................................................................86

11.1 Tape & Reel Information .............................................................................................................................87

12 Ordering Information

......................................................................................................................88

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