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LM2679

SNVS026O – MARCH 2000 – REVISED JUNE 2016

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Copyright © 2000–2016, Texas Instruments Incorporated

Table of Contents

1

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

2

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

3

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

4

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

5

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

6

Specification........................................................... 4

6.1

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

6.2

ESD Ratings.............................................................. 4

6.3

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

6.4

Thermal Information .................................................. 5

6.5

Electrical Characteristics – 3.3 V .............................. 5

6.6

Electrical Characteristics – 5 V ................................. 5

6.7

Electrical Characteristics – 12 V ............................... 6

6.8

Electrical Characteristics – Adjustable...................... 6

6.9

Electrical Characteristics – All Output Voltage

Versions ..................................................................... 6

6.10

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

7

Detailed Description .............................................. 9

7.1

Overview ................................................................... 9

7.2

Functional Block Diagram ......................................... 9

7.3

Feature Description................................................... 9

7.4

Device Functional Modes........................................ 10

8

Application and Implementation ........................ 11

8.1

Application Information............................................ 11

8.2

Typical Application .................................................. 14

9

Power Supply Recommendations ...................... 26

10

Layout................................................................... 26

10.1

Layout Guidelines ................................................. 26

10.2

Layout Example .................................................... 27

11

Device and Documentation Support ................. 28

11.1

Related Documentation......................................... 28

11.2

Receiving Notification of Documentation Updates 28

11.3

Community Resources.......................................... 28

11.4

Trademarks ........................................................... 28

11.5

Electrostatic Discharge Caution ............................ 28

11.6

Glossary ................................................................ 28

12

Mechanical, Packaging, and Orderable

Information ........................................................... 28

12.1

VSON Package Devices ....................................... 28

4 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision N (April 2013) to Revision O

Page

•

Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation

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

Mechanical, Packaging, and Orderable Information section. ................................................................................................. 1

•

Removed all references to Computer Design Software LM267X Made Simple (Version 6.0).............................................. 1

Changes from Revision M (April 2013) to Revision N

Page

•

Changed layout of National Data Sheet to TI format ........................................................................................................... 15