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LP38691-ADJ, LP38693-ADJ, LP38691-ADJ-Q1, LP38693-ADJ-Q1

SNVS324K – JANUARY 2005 – REVISED JANUARY 2016

www.ti.com

Product Folder Links: LP38691-ADJ LP38693-ADJ LP38691-ADJ-Q1 LP38693-ADJ-Q1

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Copyright © 2005–2016, 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: LP38691-ADJ, LP38693-ADJ............. 4

6.3

ESD Ratings: LP38691-ADJ-Q1, LP38693-ADJ-Q1. 4

6.4

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

6.5

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

6.6

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

6.7

Typical Characteristics .............................................. 6

7

Detailed Description ............................................ 11

7.1

Overview ................................................................. 11

7.2

Functional Block Diagrams ..................................... 11

7.3

Feature Description................................................. 12

7.4

Device Functional Modes........................................ 12

8

Application and Implementation ........................ 13

8.1

Application Information............................................ 13

8.2

Typical Applications ............................................... 13

9

Power Supply Recommendations ...................... 18

10

Layout................................................................... 18

10.1

Layout Guidelines ................................................. 18

10.2

Layout Examples................................................... 18

10.3

WSON Mounting ................................................... 19

11

Device and Documentation Support ................. 20

11.1

Documentation Support ........................................ 20

11.2

Related Links ........................................................ 20

11.3

Community Resources.......................................... 20

11.4

Trademarks ........................................................... 20

11.5

Electrostatic Discharge Caution ............................ 20

11.6

Glossary ................................................................ 20

12

Mechanical, Packaging, and Orderable

Information ........................................................... 20

4 Revision History

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

Changes from Revision J (October 2015) to Revision K

Page

•

Added Caution note to Foldback Current Limiting subsection ............................................................................................ 12

Changes from Revision I (April 2013) to Revision J

Page

•

Added Device Information and Pin Configuration and Functions sections, ESD Ratings table, update Thermal

Values; add Feature Description, Device Functional Modes, Application and Implementation, Power Supply

Recommendations, Layout, Device and Documentation Support, and Mechanical, Packaging, and Orderable

Information sections; update Vin, Vout and Ven pin names to IN, OUT, and EN in text and graphics; modified

wording of Description to eliminate redundancy; added top nav icon for reference design................................................... 1

Changes from Revision H (April 2013) to Revision I

Page

•

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

•

Changed layout of National Data Sheet to TI format .......................................................................................................... 19