JAJSSS6B January   2024  – June 2024 TPS7H3014-SP

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Device Options
  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 Quality Conformance Inspection
    8. 6.8 Typical Characteristics
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Input Voltage (IN), VLDO and REFCAP
        1. 8.3.1.1 Undervoltage Lockout (VPOR_IN < VIN < UVLO)
        2. 8.3.1.2 Power-On Reset (VIN < VPOR_IN )
      2. 8.3.2 SENSEx Inputs
        1. 8.3.2.1 VTH_SENSEX and VONx
        2. 8.3.2.2 IHYS_SENSEx and VOFFx
        3. 8.3.2.3 Top and Bottom Resistive Divider Design Equations
      3. 8.3.3 Output Stages (ENx,SEQ_DONE,PWRGD,PULL_UP1 and PULL_UP2)
      4. 8.3.4 User-Programmable TIMERS
        1. 8.3.4.1 DLY_TMR
        2. 8.3.4.2 REG_TMR
      5. 8.3.5 UP and DOWN
      6. 8.3.6 FAULT
      7. 8.3.7 State Machine
    4. 8.4 Daisy Chain
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Self Contained – Sequence UP and DOWN
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Input Power Supplies and Decoupling Capacitors
          2. 9.2.1.2.2 UP and DOWN Thresholds
          3. 9.2.1.2.3 SENSEx Thresholds
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Sequencing of Negative Voltage Rails
        1. 9.2.2.1 Negative Voltage Design Equations
    3. 9.3 Externally Induced System RESET
    4. 9.4 Power Supply Recommendations
    5. 9.5 Layout
      1. 9.5.1 Layout Guidelines
      2. 9.5.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 ドキュメントの更新通知を受け取る方法
    3. 10.3 サポート・リソース
    4. 10.4 Trademarks
    5. 10.5 静電気放電に関する注意事項
    6. 10.6 用語集
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

8.3.3 Output Stages (ENx,SEQ_DONE,PWRGD,PULL_UP1 and PULL_UP2)

The output stage's (EN1 to EN4), SEQ_DONE and PWRGD are of push-pull, active high type. The pull-up voltage for the push-pull outputs is externally provided by the user. PULL_UP1 (input) is the pull-up voltage domain for all ENx outputs (EN1 to EN4), while PULL_UP2 (input) is the pull-up voltage domain for the SEQ_DONE and PWRGD outputs.

Note: There are no sequencing requirements for IN, PULL_UP1, and PULL_UP2; however, all must be biased before commanding a sequence up and down.
Note: TI recommends to decouple PULL_UPx inputs with a 1μF ceramic capacitor as close to the pins as possible. This is to ensure clean voltages signals at the outputs (ENx, PWRGD, and SEQ_DONE).

Each output stage consists of a PMOS/NMOS (CMOS) pair. Each leg has an output resistance of typically 7Ω for VPULL_UPx > 3.3V. PULL_UP1 and PULL_UP2, have a voltage range of 1.6V～7V, and can be independently biased or tied to the same voltage rail, however both most be biased. The output resistance of the PMOS leg has a PULL_UPx voltage dependency. The lower the PULL_UPx voltage, the higher the PMOS resistance.

When VIN < VPOR_IN and VPULL_UPx > VPOR_PULL_UPx (1.4V maximum) the output will be in a known pull-down state. At this condition the outputs have reduced sinking capabilities with VOL ≤ 320mV when the device is sinking 100μA of current into the outputs:

  • ENx
  • PWRGD
  • SEQ_DONE

Once the input voltage range is withing the recommended input voltage range of 3V to 14V, the output will have the full strength capabilities of ±10mA, per output.

TPS7H3014-SP ENx Push-Pull Output StagesFigure 8-5 ENx Push-Pull Output Stages
TPS7H3014-SP PWRGD Push-Pull Output StageFigure 8-7 PWRGD Push-Pull Output Stage
TPS7H3014-SP SEQ_DONE Push-Pull Output StageFigure 8-6 SEQ_DONE Push-Pull Output Stage