ZHCSS74B january   2015  – june 2023 LV2862

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 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 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Continuous Conduction Mode
      2. 7.3.2 Fixed Frequency PWM Control
      3. 7.3.3 Eco-mode
      4. 7.3.4 Bootstrap Voltage (CB)
      5. 7.3.5 Enable (SHDN) and VIN Undervoltage Lockout (UVLO)
      6. 7.3.6 Setting the Output Voltage
      7. 7.3.7 Current Limit
      8. 7.3.8 Thermal Shutdown
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
        1. 8.2.1.1 Design Guide – Step By Step Design Procedure
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Selecting the Switching Frequency
        2. 8.2.2.2 Output Inductor Selection
        3. 8.2.2.3 Output Capacitor Selection
        4. 8.2.2.4 Schottky Diode Selection
        5. 8.2.2.5 Input Capacitor Selection
          1. 8.2.2.5.1 Bootstrap Capacitor Selection
            1. 8.2.2.5.1.1 Typical Application Circuits
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 接收文档更新通知
    3. 9.3 支持资源
    4. 9.4 Trademarks
    5. 9.5 静电放电警告
    6. 9.6 术语表
  11. 10Mechanical, Packaging, and Orderable Information

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

7.3.3 Eco-mode

The LV2862 operates in Eco-mode at light load currents to improve efficiency by reducing switching and gate drive losses. For Eco-mode operation, the LV2862 senses peak current, not average or load current, so the load current where the device enters Eco-mode is dependent on VIN, VOUT, and the output inductor value. When the load current is low and the output voltage is within regulation, the device enters ECO mode (see Figure 8-10) and draws only 28-µA input quiescent current.