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LP3991

SNVS296J – DECEMBER 2006 – REVISED JUNE 2016

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Copyright © 2006–2016, 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

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

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

6.7

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

9

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

10

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

10.1

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

10.2

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

10.3

DSBGA Mounting.................................................. 17

10.4

DSBGA Light Sensitivity ....................................... 17

11

Device and Documentation Support ................. 18

11.1

Documentation Support ........................................ 18

11.2

Receiving Notification of Documentation Updates 18

11.3

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

11.4

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

11.5

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

11.6

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 I (August 2015) to Revision J

Page

•

Changed "Linear Voltage Regulator" to "LDO" in title ............................................................................................................ 1

•

Changed "regulator" to "LDO" in Description ......................................................................................................................... 1

•

Changed Body Size dimensions from (MAX) to (NOM) in Device Information ..................................................................... 1

•

Added footnote 2 for Thermal Information ............................................................................................................................. 4

•

Added Power Dissipation and Estimating Junction Temperature subsections .................................................................... 14

•

Added Receiving Notification of Documentation Updates ................................................................................................... 18

Changes from Revision H (May 2013) to Revision I

Page

•

Added Device Information and Pin Configuration and Functions sections, ESD Rating table, Feature Description,

Device Functional Modes, Application and Implementation, Power Supply Recommendations, Layout, Device and

Documentation Support , and Mechanical, Packaging, and Orderable Information sections ................................................ 1

•

Changed pin names to TI nomenclature; added icon for Reference Design to Top Navigators ........................................... 1

•

Changed Output voltage range from "1.2 V to 2.8 V" to "0.8 V to 3 V" due to new options available to buy ....................... 1

•

Deleted Lead temp spec from Abs Max table; this info is in POA ........................................................................................ 4

•

Added updated thermal values .............................................................................................................................................. 4

•

Changed values in Table 1 based on updated thermal values ............................................................................................ 10

Changes from Revision G (May 2013) to Revision H

Page

•

Changed layout of National Data Sheet to TI format ........................................................................................................... 10