SNVSBZ2A March   2021  – July 2021 TPS3704

ADVANCE INFORMATION  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Device Nomenclature
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Timing Diagrams
    8. 7.8 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 VDD
      2. 8.3.2 SENSEx Input
        1. 8.3.2.1 Immunity to SENSEx Pin(s) Voltage Transients
          1. 8.3.2.1.1 SENSEx Hysteresis
      3. 8.3.3 RESETx/RESETx
    4. 8.4 Device Functional Modes
      1. 8.4.1 Normal Operation (VDD > VDD(MIN))
      2. 8.4.2 Undervoltage Lockout (VPOR < VDD < UVLO)
      3. 8.4.3 Power-On Reset (VDD < VPOR)
  9. Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Voltage Threshold Accuracy
      2. 9.1.2 Adjustable Voltage Thresholds
    2. 9.2 Typical Application
      1. 9.2.1 Design 1: Multi-Rail Window Monitoring for Microcontroller Power Rails
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
      2. 9.2.2 Application Curves
  10. 10Power Supply Recommendations
    1. 10.1 Power Supply Guidelines
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Nomenclature
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

Features

Designed for high performance and safety:

  • Input current (4 channels): IDD = 20 μA (maximum)
  • High threshold accuracy: ±1% (maximum)
  • Built-in precision hysteresis:
    VHYS (VIT > 800 mV) = 0.75% (typical)
  • Functional Safety-Compliant targeted
    • Developed for functional safety applications
    • Documentation to aid IEC 61508 system design will be available upon production release
    • Systematic capability up to SIL D targeted
    • Hardware capability up to SIL A targeted

Designed for a wide range of applications:

  • Quad, triple, dual, or single voltage supervisor
    • TPS37044, 3, 2, 1: 4, 3, 2, 1 - channels
  • Input voltage range, VDD = 1.7 V to 5.5 V
  • (UV / OV) threshold accuracy: ±0.25% (typical)
    • Window (OV, UV): UV and OV - only options
    • Window tolerance: ±3% to ±11%
    • High threshold resolution:
      VIT ≤ 0.8 V: 20 mV steps
      VIT > 0.8 V: lower of 0.5% or 20 mV steps
  • Push-button monitor on all channels
  • Reset time delay (tD): fixed time delay options
    • Options: 23-fixed time options ranging from
      20 µs (minimum) to 1200 ms (maximum)
  • Temperature range: –40°C to +125°C

Multiple output topologies, package type:

  • TPS3704xxxO: open-drain, active-low (RESET)
  • TPS3704xxxL: push-pull, active-low (RESET)
  • TPS3704xxxH: push-pull, active-high (RESET)
  • Package: 1.6-mm x 2.9-mm DDF (SOT-23 8-pin)