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DRV8874

SLVSF66A – AUGUST 2019 – REVISED DECEMBER 2019

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Copyright © 2019, 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 .................................................. 5

6.5

Electrical Characteristics........................................... 5

6.6

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

7

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

7.1

Overview ................................................................... 9

7.2

Functional Block Diagram ......................................... 9

7.3

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

7.4

Device Functional Modes........................................ 18

8

Application and Implementation ........................ 20

8.1

Application Information............................................ 20

8.2

Typical Application .................................................. 20

9

Power Supply Recommendations ...................... 30

9.1

Bulk Capacitance .................................................... 30

10

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

10.1

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

10.2

Layout Example .................................................... 31

11

Device and Documentation Support ................. 32

11.1

Documentation Support ........................................ 32

11.2

Receiving Notification of Documentation Updates 32

11.3

Community Resources.......................................... 32

11.4

Trademarks ........................................................... 32

11.5

Electrostatic Discharge Caution ............................ 32

11.6

Glossary ................................................................ 32

12

Mechanical, Packaging, and Orderable

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

4 Revision History

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

Changes from Original (May 2019) to Revision A

Page

•

Changed Current Regulation section with a workaround for transients that are longer than the current regulation

deglitch time.......................................................................................................................................................................... 13

•

Added additional description to Fixed Off-Time Current Regulation Section ....................................................................... 13

•

Changed calculations in Power Dissipation and Output Current Capability ........................................................................ 21

•

Added thermal plots for and description for PWP ................................................................................................................ 22

•

Added power-up plots........................................................................................................................................................... 26