JAJSO66A December   2023  – January 2024 TPS61289

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Bidirectional Operation Configuration
      2. 6.3.2 VCC Power Supply
      3. 6.3.3 VHIGH and VCC Undervoltage Lockout (UVLO)
      4. 6.3.4 Enable and Programmable EN/UVLO
      5. 6.3.5 Switching Frequency
      6. 6.3.6 Programmable Switching Peak and Valley Current Limit
      7. 6.3.7 External Clock Synchronization
      8. 6.3.8 VHIGH Overvoltage Protection
      9. 6.3.9 Thermal Shutdown
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Bootstrap Capacitor Selection
        2. 7.2.2.2 Inductor Selection
        3. 7.2.2.3 MOSFET Selection
        4. 7.2.2.4 VLOW/VHIGH Output Capacitor Selection
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
        1. 7.4.2.1 Thermal Considerations
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 サポート・リソース
    4. 8.4 Trademarks
    5. 8.5 静電気放電に関する注意事項
    6. 8.6 用語集
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

6.3.3 VHIGH and VCC Undervoltage Lockout (UVLO)

The TPS61289 has both VHIGH_UVLO and VCC_UVLO functions. These lockout functions disable the device from switching when the falling voltage at the VHIGH pin triggers the falling threshold of VHIGH_UVLO , which is typically 3.1V. These functions also disables the device when the falling voltage at the VCC pin triggers the threshold of VCC_UVLO, which is typically 2.3V. The device can operate when the rising voltage at the VHIGH and VCC pins exceeds the rising thresholds of VHIGH_UVLO and VCC_UVLO.