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LM2574, LM2574HV

SNVS104D – JUNE 1999 – REVISED APRIL 2016

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Product Folder Links: LM2574 LM2574HV

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Copyright © 1999–2016, 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 .................................................. 4

6.5

Electrical Characteristics for All Output Voltage

Versions ..................................................................... 5

6.6

Electrical Characteristics – 3.3-V Version................. 5

6.7

Electrical Characteristics – 5-V Version.................... 6

6.8

Electrical Characteristics – 12-V Version.................. 6

6.9

Electrical Characteristics – 15-V Version.................. 6

6.10

Electrical Characteristics – Adjustable Version....... 7

6.11

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

7

Detailed Description ............................................ 11

7.1

Overview ................................................................. 11

7.2

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

7.3

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

7.4

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

8

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

8.1

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

8.2

Typical Applications ................................................ 19

9

Power Supply Recommendations ...................... 25

10

Layout................................................................... 25

10.1

Layout Guidelines ................................................. 25

10.2

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

10.3

Grounding ............................................................. 26

10.4

Thermal Considerations ........................................ 26

11

Device and Documentation Support ................. 28

11.1

Device Support...................................................... 28

11.2

Documentation Support ........................................ 29

11.3

Community Resources.......................................... 29

11.4

Trademarks ........................................................... 30

11.5

Electrostatic Discharge Caution ............................ 30

11.6

Glossary ................................................................ 30

12

Mechanical, Packaging, and Orderable

Information ........................................................... 30

4 Revision History

Changes from Revision C (April 2013) to Revision D

Page

•

Added Device Information table, ESD Ratings 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

•

•

MAX values............................................................................................................................................................................. 5

•

Changes from Revision B (November 2004) to Revision C

Page

•

Changed layout of National Data Sheet to TI format ............................................................................................................. 1