SBVS211B August   2012  – April 2015

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1 Push-Button Timer Selection (TS)
      2. 7.3.2 Inputs
        1. 7.3.2.1 TPS3420 Inputs (PB1, PB2)
        2. 7.3.2.2 TPS3421 Inputs (PB1, PB2)
        3. 7.3.2.3 TPS3422 Inputs (PB1)
      3. 7.3.3 Output (RST)
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation (VDD > 1.6 V)
      2. 7.4.2 Below VDD(min) (1.6 V > VDD > 1.3 V)
      3. 7.4.3 Power-On Reset (VDD < 1.3 V)
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Single Input With Fixed Reset Pulse Duration
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Dual Input Applications
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curve
      3. 8.2.3 Latched Reset Signal
        1. 8.2.3.1 Design Requirements
        2. 8.2.3.2 Detailed Design Procedure
        3. 8.2.3.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
        1. 11.1.1.1 Evaluation Modules
        2. 11.1.1.2 Spice Models
      2. 11.1.2 Device Nomenclature
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Related Links
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

11 Device and Documentation Support

11.1 Device Support

11.1.1 Development Support

11.1.1.1 Evaluation Modules

An evaluation module (EVM) is available to assist in the initial circuit performance evaluation using the TPS3421EG. The TPS3421EGEVM-156 Evaluation Module (and related user's guide) can be requested at the TI website through the product folders or purchased directly from the TI eStore.

11.1.1.2 Spice Models

Computer simulation of circuit performance using SPICE is often useful when analyzing the performance of analog circuits and systems. A SPICE model for the TPS3421EG is available through the product folder under Tools & Software.

11.1.2 Device Nomenclature

Table 6. Device Nomenclature

PRODUCT DESCRIPTION
TPS3420xzzza
TPS3421xyzzza
TPS3422xyzzza		 x is the push-button timer option.
y is the different reset timeout pulse option.
zzz is the package designator.
a is the tape or reel quantity.

11.2 Documentation Support

11.2.1 Related Documentation

  • TPS3421EGEVM-156 User's Guide, SLVU781

11.3 Related Links

The table below lists quick access links. Categories include technical documents, support and community resources, tools and software, and quick access to sample or buy.

Table 7. Related Links

PARTS PRODUCT FOLDER SAMPLE & BUY TECHNICAL DOCUMENTS TOOLS & SOFTWARE SUPPORT & COMMUNITY
TPS3420 Click here Click here Click here Click here Click here
TPS3421 Click here Click here Click here Click here Click here
TPS3422 Click here Click here Click here Click here Click here

11.4 Trademarks

Ultrabooks is a trademark of Intel Corporation.

All other trademarks are the property of their respective owners.

11.5 Electrostatic Discharge Caution

esds-image

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

11.6 Glossary

SLYZ022 — TI Glossary.

This glossary lists and explains terms, acronyms, and definitions.