ZHCSKS3C February   2020  – April 2024 TLV761

PRODMIX  

  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 Dropout Voltage
      2. 6.3.2 Foldback Current Limit
      3. 6.3.3 Undervoltage Lockout (UVLO)
      4. 6.3.4 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Device Functional Mode Comparison
      2. 6.4.2 Normal Operation
      3. 6.4.3 Dropout Operation
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Recommended Capacitor Types
      2. 7.1.2 Input and Output Capacitor Requirements
      3. 7.1.3 Reverse Current
      4. 7.1.4 Power Dissipation (PD)
      5. 7.1.5 Estimating Junction Temperature
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
    3. 7.3 Best Design Practices
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
      2. 7.5.2 Layout Examples
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Device Nomenclature
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 接收文档更新通知
    4. 8.4 支持资源
    5. 8.5 Trademarks
    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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7.2.2 Detailed Design Procedure

For this design example, the 3.3-V, fixed-version TLV76133 is selected and is powered by a standard 12-V input supply. The dropout voltage (VDO) is kept within the TLV761 dropout voltage specification for the 3.3-V output voltage option to keep the device in regulation under all load and temperature conditions for this design. A 1.0-µF output capacitor is recommended for excellent load transient response. The input capacitor is optional and is used to reduce the input impedance of the circuit and improve the transient response.

As with any regulator, increasing the size of the output capacitor reduces overshoot and undershoot magnitude.