Table of Contents

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

2 Applications..................................................................... 1

3 Description.......................................................................1

4 Simplified Block Diagram............................................... 1

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

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

7 Specifications.................................................................. 4

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

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

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

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

7.5 Electrical Characteristics, Reference Section............. 5

7.6 Electrical Characteristics, Oscillator Section...............5

7.7 Electrical Characteristics, Error-Amplifier Section...... 5

7.8 Electrical Characteristics, Output Section...................6

7.9 Electrical Characteristics, Dead-Time Control

Section.......................................................................... 6

7.10 Electrical Characteristics, PWM Comparator

Section.......................................................................... 6

7.11 Electrical Characteristics, Total Device..................... 6

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

7.13 Typical Characteristics.............................................. 7

8 Parameter Measurement Information............................ 8

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

9.1 Overview................................................................... 10

9.2 Functional Block Diagram......................................... 10

9.3 Feature Description...................................................10

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

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

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

10.2 Typical Application.................................................. 13

11 Power Supply Recommendations..............................20

12 Layout...........................................................................20

12.1 Layout Guidelines................................................... 20

12.2 Layout Example...................................................... 21

13 Device and Documentation Support..........................21

13.1 Trademarks.............................................................21

13.2 Electrostatic Discharge Caution..............................21

13.3 Glossary..................................................................21

14 Mechanical, Packaging, and Orderable

Information.................................................................... 21

5 Revision History

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

Changes from Revision H (March 2017) to Revision I (July 2022)

Page

• Updated the numbering format for tables, figures, and cross-references throughout the document..................1

Changes from Revision G (January 2015) to Revision H (March 2017)

Page

• Updated package illustration.............................................................................................................................. 1

• Corrected resistor polarity references in the Current-Limiting Amplifier section...............................................15

• Updated Figure 12. .......................................................................................................................................... 15

Changes from Revision F (January 2014) to Revision G (January 2015)

Page

• Added Applications, Device Information table, Pin Functions table, ESD Ratings table, Thermal Information

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

Changes from Revision E (February 2005) to Revision F (January 2014)

Page

• Updated document to new TI data sheet format - no specification changes...................................................... 1

• Removed Ordering Information table..................................................................................................................1

• Added ESD warning........................................................................................................................................... 1

TL494

SLVS074I – JANUARY 1983 – REVISED JULY 2022

www.ti.com

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