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LMR23625

SNVSAH3B – DECEMBER 2015 – REVISED APRIL 2017

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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 .................................................. 5

6.5

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

6.6

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

6.7

Switching Characteristics .......................................... 7

6.8

Typical Characteristics .............................................. 8

7

Detailed Description ............................................ 10

7.1

Overview ................................................................. 10

7.2

Functional Block Diagram ....................................... 11

7.3

Feature Description................................................. 11

7.4

Device Functional Modes........................................ 17

8

Application and Implementation ........................ 18

8.1

Application Information............................................ 18

8.2

Typical Applications ................................................ 18

9

Power Supply Recommendations ...................... 24

10

Layout................................................................... 24

10.1

Layout Guidelines ................................................. 24

10.2

Compact Layout for EMI Reduction ...................... 24

10.3

Ground Plane and Thermal Considerations.......... 25

10.4

Feedback Resistors .............................................. 25

10.5

Layout Example .................................................... 26

11

Device and Documentation Support ................. 27

11.1

Custom Design With WEBENCH® Tools ............. 27

11.2

Receiving Notification of Documentation Updates 27

11.3

Community Resources.......................................... 27

11.4

Trademarks ........................................................... 27

11.5

Electrostatic Discharge Caution ............................ 27

11.6

Glossary ................................................................ 27

12

Mechanical, Packaging, and Orderable

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

4 Revision History

Changes from Revision A (July 2016) to Revision B

Page

•

Changed high side current limit to 6.2 from 6.0 ..................................................................................................................... 5

•

Changed low side current limit to 4.2 from 4.6....................................................................................................................... 5

•

Changed all the four efficiency graphs D001, D002, D003 and D004 in the Typical Characteristics section ....................... 8

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

Changes from Original (December 2015) to Revision A

Page

•

Changed from Product Preview to Production Data and added all the remaining sections................................................... 1