LM5019

SNVS788F – JANUARY 2012 – REVISED DECEMBER 2014

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Table of Contents

7.3

Feature Description................................................... 9

1

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

7.4

Device Functional Modes........................................ 13

2

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

8

Application and Implementation ........................ 14

3

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

8.1

Application Information............................................ 14

4

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

8.2

Typical Application .................................................. 14

5

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

9

Power Supply Recommendations ...................... 22

6

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

10

Layout................................................................... 22

6.1

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

10.1

Layout Guidelines ................................................. 22

6.2

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

10.2

Layout Example .................................................... 22

6.3

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

11

Device and Documentation Support ................. 23

6.4

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

11.1

Documentation Support ........................................ 23

6.5

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

11.2

Trademarks ........................................................... 23

6.6

Switching Characteristics .......................................... 6

11.3

Electrostatic Discharge Caution ............................ 23

6.7

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

11.4

Glossary ................................................................ 23

7

Detailed Description .............................................. 8

12

Mechanical, Packaging, and Orderable

7.1

Overview ................................................................... 8

Information ........................................................... 23

7.2

Functional Block Diagram ......................................... 8

4 Revision History

Changes from Revision E (December 2013) to Revision F

Page

•

Added Pin Configuration and Functions section, ESD Rating 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 package designators to pin out drawings. ................................................................................................................. 3

•

Changed Thermal Information table. ..................................................................................................................................... 4

•

Added Timing Requirements table. ........................................................................................................................................ 6

•

Changed Control Overview section ........................................................................................................................................ 9

•

Changed Soft-Start Circuit graphic....................................................................................................................................... 13

•

•

Changed Isolated Fly-Buck Converter graphic..................................................................................................................... 17

Changes from Revision D (December 2013) to Revision E

Page

•

Added Thermal Parameters. .................................................................................................................................................. 4

Changes from Revision C (September 2013) to Revision D

Page

•

Changed Formatting throughout document to the TI standard .............................................................................................. 1

•

Changed minimum operating input voltage from 9 V to 7.5 V in Features ........................................................................... 1

•

Changed minimum operating input voltage from 9 V to 7.5 V in Typical Application ........................................................... 1

•

Changed minimum operating input voltage from 9 V to 7.5 V in Pin Descriptions ............................................................... 3

•

Added Maximum Junction Temperature................................................................................................................................. 4

•

Changed minimum operating input voltage from 9 V to 7.5 V in Recommended Operating Conditions. ............................. 4

Changes from Revision B (February 2012) to Revision C

Page

•

Added SW to RTN (100 ns transient) in Absolute Maximum Ratings. .................................................................................. 4

2

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