TL494_15 Datasheet, PDF (2/33 Pages) Unisonic Technologies – VOLTAGE MODE PWM CONTROL CIRCUIT

TL494
SLVS074G – JANUARY 1983 – REVISED JANUARY 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Pinout Drawing....................................................... 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
Changes from Revision F (January 2014) to Revision G
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
Page
• Updated document to new TI data sheet format - no specification changes. ........................................................................ 1
• Removed Ordering Information table. .................................................................................................................................... 1
• Added ESD warning. ............................................................................................................................................................ 21
2
Submit Documentation Feedback
Product Folder Links: TL494
Copyright © 1983–2015, Texas Instruments Incorporated