ZHCSOQ1D october   2022  – september 2023 TPS61033 , TPS610333

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Device Comparison Table
  6. 5 Revision History
  7. 6 Pin Configuration and Functions
  8. 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 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Undervoltage Lockout
      2. 8.3.2  Enable and Soft Start
      3. 8.3.3  Setting the Output Voltage
      4. 8.3.4  Current Limit Operation
      5. 8.3.5  Pass-Through Operation
      6. 8.3.6  Power Good Indicator
      7. 8.3.7  Implement Output Discharge by PG function
      8. 8.3.8  Overvoltage Protection
      9. 8.3.9  Output Short-to-Ground Protection
      10. 8.3.10 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 PWM Mode
      2. 8.4.2 Power-Save Mode
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Setting the Output Voltage
        2. 9.2.2.2 Inductor Selection
        3. 9.2.2.3 Output Capacitor Selection
        4. 9.2.2.4 Input Capacitor Selection
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
      3. 9.4.3 Thermal Considerations
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 第三方产品免责声明
    2. 10.2 接收文档更新通知
    3. 10.3 支持资源
    4. 10.4 Trademarks
    5. 10.5 静电放电警告
    6. 10.6 术语表
  12. 11Mechanical, Packaging, and Orderable Information

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8.3.1 Undervoltage Lockout

The TPS61033 has a built-in undervoltage lockout (UVLO) circuit to ensure the device working properly. When the input voltage is above the UVLO rising threshold of 1.7 V (typical), the TPS61033 can be enabled to boost the output voltage. The device is disabled when the falling voltage at the VIN pin trips the UVLO falling threshold, which is 1.6 V (typical). A hysteresis of 100 mV (typical) is added so that the device cannot be enabled again until the input voltage exceeds 1.7 V (typical). This function is implemented to prevent the device from malfunctioning when the input voltage is between UVLO rising and falling threshold.