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LM26480-Q1

SNVSA58A – JANUARY 2015 – REVISED JUNE 2016

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Copyright © 2015–2016, Texas Instruments Incorporated

Table of Contents

1

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

2

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

3

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

4

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

5

Device Comparison Tables................................... 3

6

Pin Configuration and Functions ......................... 4

7

Specifications......................................................... 5

7.1

Absolute Maximum Ratings ...................................... 5

7.2

ESD Ratings.............................................................. 5

7.3

Recommended Operating Conditions: Bucks ........... 5

7.4

Thermal Information .................................................. 5

7.5

General Electrical Characteristics ............................. 6

7.6

Low Dropout Regulators, LDO1 and LDO2 .............. 6

7.7

Buck Converters SW1, SW2..................................... 7

7.8

I/O Electrical Characteristics ..................................... 8

7.9

Power On Reset Threshold/Function (POR)............. 8

7.10

Typical Characteristics — LDO............................... 9

7.11

Typical Characteristics — Buck 2.8 V to 5.5 V ..... 10

7.12

Typical Characteristics — Bucks 1 and 2 ............. 11

7.13

Typical Characteristics — Buck 3.6 V................... 12

8

Detailed Description ............................................ 13

8.1

Overview ................................................................. 13

8.2

Functional Block Diagram ....................................... 13

8.3

Feature Description................................................. 14

8.4

Device Functional Modes........................................ 21

9

Application and Implementation ........................ 22

9.1

Application Information............................................ 22

9.2

Typical Application ................................................. 24

10

Power Supply Recommendations ..................... 31

11

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

11.1

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

11.2

Layout Example .................................................... 32

12

Device and Documentation Support ................. 33

12.1

Device Support .................................................... 33

12.2

Documentation Support ....................................... 33

12.3

Community Resources.......................................... 33

12.4

Trademarks ........................................................... 33

12.5

Electrostatic Discharge Caution ............................ 33

12.6

Glossary ................................................................ 33

13

Mechanical, Packaging, and Orderable

Information ........................................................... 33

4 Revision History

Changes from Original (January 2016) to Revision A

Page

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Added top navigator icon ....................................................................................................................................................... 1

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Changed "