2

TPS791

SLVS325D – MARCH 2001 – REVISED FEBRUARY 2018

www.ti.com

Product Folder Links: TPS791

Submit Documentation Feedback

Copyright © 2001–2018, 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......................................................... 3

6.1

Absolute Maximum Ratings ...................................... 3

6.2

ESD Ratings.............................................................. 4

6.3

Recommended Operating Conditions ....................... 4

6.4

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

6.5

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

6.6

Typical Characteristics .............................................. 6

7

Detailed Description ............................................ 12

7.1

Overview ................................................................. 12

7.2

Functional Block Diagrams ..................................... 12

7.3

Feature Description................................................. 13

7.4

Device Functional Modes........................................ 15

8

Application and Implementation ........................ 16

8.1

Application Information............................................ 16

8.2

Typical Application ................................................. 16

8.3

Do's and Don'ts ....................................................... 17

9

Power Supply Recommendations ...................... 18

10

Layout................................................................... 18

10.1

Layout Guidelines ................................................. 18

10.2

Layout Example .................................................... 18

11

Device and Documentation Support ................. 19

11.1

Receiving Notification of Documentation Updates 19

11.2

Community Resources.......................................... 19

11.3

Trademarks ........................................................... 19

11.4

Electrostatic Discharge Caution ............................ 19

11.5

Glossary ................................................................ 19

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.

Changes from Revision C (May 2002) to Revision D

Page

•

Added Device Information table, Simplified Schematic figures to page 1, ESD Ratings table, Thermal Information

table, Pin Configuration and Functions section, Overview section, Feature Description section, Device Functional

Modes section, Application and Implementation section, Power Supply Recommendations section, Layout section,

Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section ................... 1

•

Changed TPS791xx to TPS791 throughout document ......................................................................................................... 1

•

Changed Applications section ............................................................................................................................................... 1

•

Changed Description section ................................................................................................................................................. 1

•

Deleted Ordering Information table ........................................................................................................................................ 3

•

Changed EN pin description .................................................................................................................................................. 3

•

Added I/O data for GND pin .................................................................................................................................................. 3

•

Deleted Package Dissipation Rating table ............................................................................................................................. 3

•

Changed VI to VIN, IO to IOUT, CO to COUT, Co(byp) and C(byp) to CBYPASS throughout document .............................................. 3

•

Changed formula in footnote 1 of Recommended Operating Conditions table...................................................................... 4

•

Added VREF parameter to Electrical Characteristics table.................................................................................................... 5

•

Changed VCC to VIN in test conditions of UVLO threshold and UVLO hysteresis parameters ............................................... 5

•

Added PSRR and VDO symbols to Power-supply ripple rejection and Dropout voltage parameters...................................... 5

•

Added conditions statement to Typical Characteristics section ............................................................................................ 6

•

Changed IOUT to CBYPASS in TPS79118 Output Spectral Noise Density vs Frequency figure ................................................ 7

•

Changed IOUT to CBYPASS in TPS79133 Output Spectral Noise Density vs Frequency figure ................................................ 7

•

Changed third bullet in Normal Operation section ............................................................................................................... 15

•

Changed first bullet in Disabled section .............................................................................................................................. 15

•

Changed VEN column in Device Functional Mode Comparison table................................................................................... 15

•

Added active-low to Application Information description ..................................................................................................... 16