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LM3555

SNVS594G – DECEMBER 2008 – REVISED APRIL 2016

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Copyright © 2008–2016, 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 .................................................. 5

6.5

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

6.6

Control Interface Timing Requirements .................... 7

6.7

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

7

Detailed Description ............................................ 15

7.1

Overview ................................................................. 15

7.2

Functional Block Diagram ....................................... 15

7.3

Feature Description................................................. 16

7.4

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

7.5

Programming........................................................... 22

7.6

Register Maps ......................................................... 24

8

Application and Implementation ........................ 27

8.1

Application Information............................................ 27

8.2

Typical Application ................................................. 27

9

Power Supply Recommendations ...................... 30

10

Layout................................................................... 31

10.1

Layout Guidelines ................................................. 31

10.2

Layout Example .................................................... 31

11

Device and Documentation Support ................. 32

11.1

Device Support...................................................... 32

11.2

Documentation Support ........................................ 32

11.3

Community Resources.......................................... 32

11.4

Trademarks ........................................................... 32

11.5

Electrostatic Discharge Caution ............................ 32

11.6

Glossary ................................................................ 32

12

Mechanical, Packaging, and Orderable

Information ........................................................... 32

4 Revision History

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

Changes from Revision F (November 2013) to Revision G

Page

•

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

Feature Description, Device Functional Modes, Application and Implementation, Power Supply Recommendations,

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

•

Changes from Revision E (November 2011) to Revision F

Page

•

Changed layout of National Data Sheet to TI format ........................................................................................................... 31