LM3646

SNVS962A – DECEMBER 2013 – REVISED NOVEMBER 2014

www.ti.com

Table of Contents

7.4

Device Functional Modes........................................ 14

1

Features .................................................................. 1

7.5

Programming........................................................... 17

2

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

7.6

Register Map........................................................... 19

3

Description ............................................................. 1

8

Application and Implementation ........................ 24

4

Revision History..................................................... 2

8.1

Application Information............................................ 24

5

Pin Configuration and Functions ......................... 3

8.2

Typical Application .................................................. 24

6

Specifications......................................................... 4

9

Power Supply Recommendations ...................... 32

6.1

Absolute Maximum Ratings ...................................... 4

10

Layout................................................................... 32

6.2

Handling Ratings....................................................... 4

10.1

Layout Guidelines ................................................. 32

6.3

Recommended Operating Conditions ...................... 4

10.2

Layout Example .................................................... 33

6.4

Thermal Information .................................................. 4

11

Device and Documentation Support ................. 34

6.5

Electrical Characteristics........................................... 5

11.1

Device Support...................................................... 34

6.6

Timing Requirements ................................................ 6

11.2

Documentation Support ........................................ 34

6.7

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

11.3

Trademarks ........................................................... 34

7

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

11.4

Electrostatic Discharge Caution ............................ 34

7.1

Overview ................................................................. 12

11.5

Glossary ................................................................ 34

7.2

Functional Block Diagram ....................................... 13

12

Mechanical, Packaging, and Orderable

7.3

Feature Description................................................. 13

Information ........................................................... 34

4 Revision History

Changes from Original (December 2013) to Revision A

Page

•

Added Device Information and Handling Rating tables, Feature Description, Device Functional Modes, Application

and Implementation, Power Supply Recommendations, Layout, Device and Documentation Support, and

Mechanical, Packaging, and Orderable Information sections; moved some curves to Application Curves section .............. 1

•

Deleted "TX interrupt" .......................................................................................................................................................... 12

•

Changed reference to "Max LED Control Register (0x05)" to "Enable Register (0x01)" .................................................... 14

•

Added Control Truth table ................................................................................................................................................... 17

2

Submit Documentation Feedback

Copyright © 2013–2014, Texas Instruments Incorporated

Product Folder Links: LM3646