SNVSBZ2E March   2021  – December 2023 TPS3704

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Nomenclature
  6. 5 Pin Configuration and Functions
  7. 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 Timing Diagrams
    8. 6.8 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 VDD
      2. 7.3.2 SENSEx Input
        1. 7.3.2.1 Immunity to SENSEx Pins Voltage Transients
          1. 7.3.2.1.1 SENSEx Hysteresis
      3. 7.3.3 RESETx/RESETx
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation (VDD > VDD(MIN))
      2. 7.4.2 Undervoltage Lockout (VPOR < VDD < UVLO)
      3. 7.4.3 Power-On Reset (VDD < VPOR)
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Voltage Threshold Accuracy
      2. 8.1.2 Adjustable Voltage Thresholds
    2. 8.2 Typical Application
      1. 8.2.1 Design 1: Multi-Rail Window Monitoring for Microcontroller Power Rails
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
      2. 8.2.2 Design 2: Manual Self-Test Option for Enhanced Functional Safety Use Cases
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
      1. 8.3.1 Power Supply Guidelines
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Nomenclature
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

3 Description

The TPS3704x is a low-power precision window or standard voltage supervisor that can be configured as a quad, triple, or dual channel. Each channel has a threshold accuracy of ±1% in an 8-pin
(1.6 mm x 2.9 mm) SOT-23 package offering a small solution size. The TPS3704x includes a very accurate threshold detection, with high resolution, that is ideal for systems that operate on low-voltage supply rails and have narrow margin supply tolerances. Built-in low threshold hysteresis and a fixed reset delay prevent false reset signals when monitoring multiple voltage rails.

The TPS3704x does not require any external resistors for setting the over and undervoltage reset thresholds, which further optimizes overall high accuracy, cost, solution size, and improves reliability for safety systems.

Separate VDD and SENSEx pins allow monitoring of rail voltages other than VDD or can be used as a push-button input. Optional use of external resistors are supported by the SENSEx pins. Each channel on the TPS3704x can be customized to its own over and undervoltage window detection with an upper and lower threshold tolerance that can be symmetric or asymmetric.

Device Information
PART NUMBER PACKAGE (1) BODY SIZE (NOM)
TPS3704x DDF (SOT-23 8-pin) 1.6 mm × 2.9 mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
GUID-20210711-CA0I-K75X-CNZW-3GRMZ8XCDJNV-low.svg Typical Application Circuit