ZHCSI00D April   2018  – September 2020 LMR36015

PRODUCTION DATA  

  1. 特性
  2. 应用
  3. 说明
  4. Revision History
  5. 说明(续)
  6. Device Comparison Table
  7. Pin Configuration and Functions
    1.     Pin Functions
  8. Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Timing Requirements
    7. 8.7 System Characteristics
    8. 8.8 Typical Characteristics
  9. Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Power-Good Flag Output
      2. 9.3.2 Enable and Start-up
      3. 9.3.3 Current Limit and Short Circuit
      4. 9.3.4 Undervoltage Lockout and Thermal Shutdown
    4. 9.4 Device Functional Modes
      1. 9.4.1 Auto Mode
      2. 9.4.2 Forced PWM Operation
      3. 9.4.3 Dropout
      4. 9.4.4 Minimum Switch On-Time
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design 1: Low Power 24-V, 1.5-A PFM Converter
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
          1. 10.2.1.2.1  Custom Design With WEBENCH Tools
          2. 10.2.1.2.2  Choosing the Switching Frequency
          3. 10.2.1.2.3  Setting the Output Voltage
          4. 10.2.1.2.4  Inductor Selection
          5. 10.2.1.2.5  Output Capacitor Selection
          6. 10.2.1.2.6  Input Capacitor Selection
          7. 10.2.1.2.7  CBOOT
          8. 10.2.1.2.8  VCC
          9. 10.2.1.2.9  CFF Selection
            1. 10.2.1.2.9.1 External UVLO
          10. 10.2.1.2.10 Maximum Ambient Temperature
      2. 10.2.2 Application Curves
      3. 10.2.3 Design 2: High Density 24-V, 1.5-A FPWM Converter
        1. 10.2.3.1 Design Requirements
        2. 10.2.3.2 Detailed Design Procedure
        3. 10.2.3.3 Application Curves
    3. 10.3 What to Do and What Not to Do
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
      1. 12.1.1 Ground and Thermal Considerations
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Development Support
        1. 13.1.1.1 Custom Design With WEBENCH® Tools
    2. 13.2 Documentation Support
      1. 13.2.1 Related Documentation
    3. 13.3 接收文档更新通知
    4. 13.4 支持资源
    5. 13.5 Trademarks
    6. 13.6 静电放电警告
    7. 13.7 术语表
  14. 14Mechanical, Packaging, and Orderable Information

说明

LMR36015 稳压器是一款易于使用的同步降压直流/直流转换器。该器件具有集成式高侧和低侧功率 MOSFET,能够提供高达 1.5A 的输出电流(在 4.2V 至 60V 的宽输入电压范围内)。容差高达 66V。这种瞬态容差降低了防止过压所需的设计工作量,并满足 IEC 61000-4-5 的浪涌抗扰度要求。

LMR36015 采用峰值电流模式控制机制来提供最佳的效率和输出电压精度。利用 1MHz 稳压器中的 FPWM 功能可以改善负载瞬态性能。精密使能支持直接连接到宽输入电压或对器件启动和关断进行精确控制,因此提供了灵活性。附带内置滤波和延迟功能的电源正常状态标志可提供系统状态的真实指示,免去了使用外部监控器的麻烦。

器件信息
器件型号 封装(1) 封装尺寸(标称值)
LMR36015 VQFN-HR (12) 2.00mm x 3.00mm
如需了解所有可用封装,请参阅数据表末尾的可订购产品附录。
GUID-20200813-CA0I-NQ3P-ZJ0R-LD7MLCTNJZ8N-low.jpg
VOUT = 5V 400kHz
效率
GUID-ED020F70-5FA6-44F8-AB26-1B50CDB8DAC0-low.gif简化版原理图