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 Timing Requirements..................................................6

6.7 Timing Diagrams ........................................................7

6.8 Typical Characteristics................................................ 9

7 Detailed Description......................................................10

7.1 Overview................................................................... 10

7.2 Functional Block Diagrams....................................... 10

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

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

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

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

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

9 Power Supply Recommendations................................26

10 Layout...........................................................................27

10.1 Layout Guidelines................................................... 27

10.2 Layout Example...................................................... 27

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

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

11.2 Documentation Support.......................................... 28

11.3 Receiving Notification of Documentation Updates.. 28

11.4 Support Resources................................................. 28

11.5 Trademarks............................................................. 28

11.6 Electrostatic Discharge Caution.............................. 28

11.7 Glossary.................................................................. 28

12 Mechanical, Packaging, and Orderable

Information.................................................................... 28

4 Revision History

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

Changes from Revision * (July 2018) to Revision A (October 2021)

Page

• Updated the numbering format for tables, figures, and cross-references throughout the document..................1

• Removed "±15% Accurate Watchdog Timeout and Watchdog Reset Delays Over Temperature"..................... 1

• Removed "15% timing accuracy (–40°C to +125°C), "....................................................................................... 1

• Updated ESD Ratings.........................................................................................................................................4

• Updated ICWD min and max spec........................................................................................................................5

• Updated VCWD min and max spec...................................................................................................................... 5

• Added a footnote to for tINIT ............................................................................................................................... 6

• Changed minimum and maximum specifications of 2nd, 5th, 6th, and 8th rows of tWDL parameter ................. 6

• Changed minimum and maximum specifications of 2nd and last rows of tWDU parameter ............................... 6

• Updated WDO delay time values for various capacitors in Watchdog Reset Delay Time for Common Ideal

Capacitor Values table......................................................................................................................................16

• Changed minimum and maximum specifications for NC SETx 01 setting for both upper and lower watchdog

boundaries, 10 kΩ to VDD SETx 00 and 01 settings for lower watchdog boundary, and 10 kΩ to VDD SETx

11 setting for both upper and lower watchdog boundaries in Factory-Programmed Watchdog Timing table...18

• Updated tWDU min and max values for all capacitors........................................................................................18

• Updated tWDU min and max boundry values from 0.85 and 1.15 to 0.905 and 1.095 respectively...................18

TPS3430

SBVS366A – JULY 2018 – REVISED OCTOBER 2021

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