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LM5175

SNVSA37A – OCTOBER 2015 – REVISED MAY 2016

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Table of Contents

1

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

2

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

3

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

4

Simplified Schematic............................................. 1

5

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

6

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

7

Specifications......................................................... 5

7.1

Absolute Maximum Ratings ...................................... 5

7.2

ESD Ratings.............................................................. 5

7.3

Recommended Operating Conditions ....................... 5

7.4

Thermal Information .................................................. 6

7.5

Electrical Characteristics........................................... 6

7.6

Typical Characteristics .............................................. 9

8

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

8.1

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

8.2

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

8.3

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

8.4

Device Functional Modes........................................ 19

9

Application and Implementation ........................ 20

9.1

Application Information............................................ 20

9.2

Typical Application .................................................. 20

10

Power Supply Recommendations ..................... 28

11

Layout................................................................... 28

11.1

Layout Guidelines ................................................. 28

11.2

Layout Example .................................................... 29

12

Device and Documentation Support ................. 30

12.1

Custom Design with WEBENCH Tools................. 30

12.2

Receiving Notification of Documentation Updates 30

12.3

Documentation Support ........................................ 30

12.4

Community Resources.......................................... 30

12.5

Trademarks ........................................................... 30

12.6

Electrostatic Discharge Caution ............................ 30

12.7

Glossary ................................................................ 30

13

Mechanical, Packaging, and Orderable

Information ........................................................... 31

5 Revision History

Changes from Original (October 2015) to Revision A

Page

•

Added QFN-28 Packages....................................................................................................................................................... 1

•

Added LM5175RHF information ............................................................................................................................................ 1

•

Added RHF package .............................................................................................................................................................. 3

•

Added QFN pins .................................................................................................................................................................... 4

•

Changed first plus to minus ................................................................................................................................................. 18

•

Changed all 1.22 V to 1.23 V .............................................................................................................................................. 19

•

Changed equation ............................................................................................................................................................... 24

•

Changed equation ............................................................................................................................................................... 26

•

Changed equation ............................................................................................................................................................... 26