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OPA521

SBOS872 – MAY 2018

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Copyright © 2018, 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

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

6.4

Electrical Characteristics.......................................... 4

6.5

Electrical Characteristics: Digital.............................. 5

6.6

Electrical Characteristics: Power Supply ................. 6

7

Detailed Description .............................................. 7

7.1

Overview ................................................................... 7

7.2

Functional Block Diagram ......................................... 7

7.3

Feature Description................................................... 7

7.4

IQSET Pin ................................................................. 7

7.5

EN Pin ....................................................................... 7

7.6

ILIM Pin Current Limiting .......................................... 7

7.7

IFLAG and TFLAG Pins ............................................ 8

7.8

Device Functional Modes.......................................... 8

8

Application and Implementation .......................... 9

8.1

Application Information.............................................. 9

8.2

Typical Application .................................................... 9

9

Power Supply Recommendations ...................... 13

10

Layout................................................................... 14

10.1

Layout Guidelines ................................................. 14

10.2

Layout Example .................................................... 17

11

Device and Documentation Support ................. 18

11.1

Documentation Support ....................................... 18

11.2

Receiving Notification of Documentation Updates 18

11.3

Community Resources.......................................... 18

11.4

Trademarks ........................................................... 18

11.5

Electrostatic Discharge Caution ............................ 18

11.6

Glossary ................................................................ 18

12

Mechanical, Packaging, and Orderable

Information ........................................................... 19

4 Revision History

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

DATE

REVISION

NOTES

May 2018

*

Initial release