ZHCSGP0A July   2017  – September 2017 TPS7A39

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
  6. 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 Startup Characteristics
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Voltage Regulation
        1. 7.3.1.1 DC Regulation
        2. 7.3.1.2 AC and Transient Response
      2. 7.3.2 User-Settable Buffered Reference
      3. 7.3.3 Active Discharge
      4. 7.3.4 System Start-Up Controls
        1. 7.3.4.1 Start-Up Tracking
        2. 7.3.4.2 Sequencing
          1. 7.3.4.2.1 Enable (EN)
          2. 7.3.4.2.2 Undervoltage Lockout (UVLO) Control
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation
      2. 7.4.2 Dropout Operation
      3. 7.4.3 Disabled
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1  Setting the Output Voltages on Adjustable Devices
      2. 8.1.2  Capacitor Recommendations
      3. 8.1.3  Input and Output Capacitor (CINx and COUTx)
      4. 8.1.4  Feed-Forward Capacitor (CFFx)
      5. 8.1.5  Noise-Reduction and Soft-Start Capacitor (CNR/SS)
      6. 8.1.6  Buffered Reference Voltage
      7. 8.1.7  Overriding Internal Reference
      8. 8.1.8  Start-Up
        1. 8.1.8.1 Soft-Start Control (NR/SS)
          1. 8.1.8.1.1 In-Rush Current
        2. 8.1.8.2 Undervoltage Lockout (UVLOx) Control
      9. 8.1.9  AC and Transient Performance
        1. 8.1.9.1 Power-Supply Rejection Ratio (PSRR)
        2. 8.1.9.2 Channel-to-Channel Output Isolation and Crosstalk
        3. 8.1.9.3 Output Voltage Noise
        4. 8.1.9.4 Optimizing Noise and PSRR
        5. 8.1.9.5 Load Transient Response
      10. 8.1.10 DC Performance
        1. 8.1.10.1 Output Voltage Accuracy (VOUTx)
        2. 8.1.10.2 Dropout Voltage (VDO)
      11. 8.1.11 Reverse Current
      12. 8.1.12 Power Dissipation (PD)
        1. 8.1.12.1 Estimating Junction Temperature
    2. 8.2 Typical Applications
      1. 8.2.1 Design 1: Single-Ended to Differential Isolated Supply
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Switcher Choice
          2. 8.2.1.2.2 Full Bridge Rectifier With Center-Tapped Transformer
          3. 8.2.1.2.3 Total Solution Efficiency
          4. 8.2.1.2.4 Feedback Resistor Selection
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Design 2: Getting the Full Range of a SAR ADC
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Detailed Design Description
          1. 8.2.2.3.1 Regulation of -0.2 V
          2. 8.2.2.3.2 Feedback Resistor Selection
        4. 8.2.2.4 Application Curves
  9. 9 Power-Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Board Layout Recommendations to Improve PSRR and Noise Performance
    2. 10.2 Layout Example
    3. 10.3 Package Mounting
  11. 11器件和文档支持
    1. 11.1 器件支持
      1. 11.1.1 开发支持
        1. 11.1.1.1 评估模块
        2. 11.1.1.2 Spice 模型
    2. 11.2 文档支持
      1. 11.2.1 相关文档
    3. 11.3 接收文档更新通知
    4. 11.4 社区资源
    5. 11.5 商标
    6. 11.6 静电放电警告
    7. 11.7 Glossary
  12. 12机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

9 Power-Supply Recommendations

The input supply for the LDO must be within the recommended operating conditions. The input voltage must provide adequate headroom in order for the device to have a regulated output. Place the 10-µF input capacitors as close to the device as possible. If the input supply is noisy, additional input capacitors can help improve the output noise performance.
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