ZHCSBE5D August   2013  – June 2025 TPS62090-Q1

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  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  Enable and Disable (EN)
      2. 6.3.2  Soft Start (SS) and Hiccup Current Limit During Start-Up
      3. 6.3.3  Voltage Tracking (SS)
      4. 6.3.4  Short-Circuit Protection (Hiccup Mode)
      5. 6.3.5  Output Discharge Function
      6. 6.3.6  Power Good Output (PG)
      7. 6.3.7  Frequency Set Pin (FREQ)
      8. 6.3.8  Undervoltage Lockout (UVLO)
      9. 6.3.9  Thermal Shutdown
      10. 6.3.10 Charge Pump (CP, CN)
    4. 6.4 Device Functional Modes
      1. 6.4.1 Pulse Width Modulation Operation
      2. 6.4.2 Power Save Mode Operation
      3. 6.4.3 Low-Dropout Operation (100% Duty Cycle)
  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 Inductor Selection
        2. 7.2.2.2 Input and Output Capacitor Selection
        3. 7.2.2.3 Setting the Output Voltage
      3. 7.2.3 Application Curves
    3. 7.3 System Examples
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
      2. 7.5.2 Layout Example
  9. 8 器件和文档支持
    1. 8.1 器件支持
      1. 8.1.1 第三方产品免责声明
    2. 8.2 文档支持
      1. 8.2.1 相关文档
    3. 8.3 接收文档更新通知
    4. 8.4 支持资源
    5. 8.5 商标
    6. 8.6 静电放电警告
    7. 8.7 术语表
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

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6.3.1 Enable and Disable (EN)

The device is enabled by setting the EN pin to a logic high. Accordingly, shutdown mode is forced if the EN pin is pulled low with a shutdown current of typically 0.6 µA. In shutdown mode, the internal power switches as well as the entire control circuitry are turned off. An internal resistor of 200 Ω discharges the output through the VOS pin smoothly. An internal pulldown resistor of 400 kΩ is connected to the EN pin when the EN pin is low. The pulldown resistor is disconnected when the EN pin is high.