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LM2840, LM2841, LM2842

SNVS540K – MARCH 2009 – REVISED APRIL 2019

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Product Folder Links: LM2840 LM2841 LM2842

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Copyright © 2009–2019, 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

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

6.1

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

6.2

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

6.3

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

6.4

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

6.5

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

6.6

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 Applications ................................................ 11

9

Power Supply Recommendations ...................... 16

10

Layout................................................................... 16

10.1

Layout Guidelines ................................................. 16

10.2

Layout Example .................................................... 16

11

Device and Documentation Support ................. 17

11.1

Device Support...................................................... 17

11.2

Documentation Support ........................................ 17

11.3

Related Links ........................................................ 17

11.4

Receiving Notification of Documentation Updates 17

11.5

Community Resources.......................................... 18

11.6

Trademarks ........................................................... 18

11.7

Electrostatic Discharge Caution ............................ 18

11.8

Glossary ................................................................ 18

12

Mechanical, Packaging, and Orderable

Information ........................................................... 18

4 Revision History

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

Changes from Revision J (February 2017) to Revision K

Page

•

Split automotive data sheet to separate document (SNVSBE5) and remove automotive-specific content from SNVS540 .. 1

•

Added SIMPLE SWITCHER

® to data sheet title ................................................................................................................... 1

Changes from Revision I (September 2016) to Revision J

Page

•

Added new text for Pin 4 ........................................................................................................................................................ 3

•

Added this new line of text in Shutdown Operation section ................................................................................................. 13

Changes from Revision H (April 2013) to Revision I

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

•

Added Thermal Information table ........................................................................................................................................... 4

Changes from Revision G (April 2013) to Revision H

Page

•

Changed layout of National Semiconductor data sheet to TI format...................................................................................... 1