ZHCSD60D June   2012  – August 2018 LMZ20502

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      简化原理图
      2.      VOUT = 1.8V 时自动模式下的典型效率
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
    1.     Pin 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 System 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 Nano Scale Package
      2. 7.3.2 Internal Synchronous Rectifier
      3. 7.3.3 Current Limit Protection
      4. 7.3.4 Start-Up
      5. 7.3.5 Dropout Behavior
      6. 7.3.6 Power Good Flag Function
      7. 7.3.7 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 PWM Operation
      2. 7.4.2 PFM Operation
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Detailed Design Procedure
        1. 8.2.1.1 Custom Design With WEBENCH® Tools
        2. 8.2.1.2 Setting The Output Voltage
        3. 8.2.1.3 Output and Feed-Forward Capacitors
        4. 8.2.1.4 Input Capacitors
        5. 8.2.1.5 Maximum Ambient Temperature
        6. 8.2.1.6 Options
      2. 8.2.2 Application Curves
    3. 8.3 Do's and Don'ts
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Soldering Information
  11. 11器件和文档支持
    1. 11.1 器件支持
      1. 11.1.1 第三方产品免责声明
      2. 11.1.2 开发支持
        1. 11.1.2.1 使用 WEBENCH® 工具创建定制设计
      3. 11.1.3 文档支持
        1. 11.1.3.1 相关文档
    2. 11.2 接收文档更新通知
    3. 11.3 社区资源
    4. 11.4 商标
    5. 11.5 静电放电警告
    6. 11.6 术语表
  12. 12机械、封装和可订购信息
    1. 12.1 Tape and Reel Information

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • SIL|8
散热焊盘机械数据 (封装 | 引脚)
订购信息

8.2.2 Application Curves

The following specifications apply to the circuit found in Figure 16 or Figure 17 with the appropriate modifications from Table 2. These parameters are not tested and represent typical performance only. Unless otherwise stated the following conditions apply: TA = 25°C.
LMZ20502 efficiency_Vout_1.8V_snvs852.png
VOUT = 1.8 V
Figure 20. Efficiency
LMZ20502 regulation_Vout_1.8V_snvs852.png
VOUT = 1.8 V
Figure 22. Regulation, AUTO Mode
LMZ20502 auto_mode_load_boundary_Vout_1.8V_snvs852.png
VOUT = 1.8 V
Figure 24. AUTO Mode Thresholds
LMZ20502 efficiency_Vout_1.2V_snvs852.png
VOUT = 1.2 V
Figure 26. Efficiency
LMZ20502 regulation_Vout_1.2V_snvs852.png
VOUT = 1.2 V
Figure 28. Regulation, AUTO Mode
LMZ20502 auto_1p2v_snvs852.png
VOUT = 1.2 V
Figure 30. AUTO Mode Thresholds
LMZ20502 efficiency_Vout_3.3V_snvs852.png
VOUT = 3.3 V
Figure 32. Efficiency
LMZ20502 regulation_Vout_3.3V_snvs852.png
VOUT = 3.3 V
Figure 34. Regulation, AUTO Mode
LMZ20502 auto_mode_load_boundary_Vout_3.3V_snvs852.png
VOUT = 3.3 V
Figure 36. AUTO Mode Thresholds
LMZ20502 fig_06.gif
VOUT = 1.8 V VIN = 4.2 V
Figure 21. Load Transient In PWM
LMZ20502 fig_08.gif
VOUT = 1.8 V VIN = 4.2 V
Figure 23. Load Transient In AUTO Mode
LMZ20502 start_5v_1p8v_2A_new.gif
VOUT = 1.8 V VIN = 5 V IOUT = 1 A
Figure 25. Start-Up
LMZ20502 fig_12.gif
VOUT = 1.2 V VIN = 4.2 V
Figure 27. Load Transients In PWM
LMZ20502 fig_14.gif
VOUT = 1.2 V VIN = 4.2 V
Figure 29. Load Transients In AUTO Mode
LMZ20502 start_5v_1p2v_2A_new.gif
VOUT = 1.2 V VIN = 5V IOUT = 1A
Figure 31. Start-up
LMZ20502 fig_18.gif
VOUT = 3.3 V VIN = 4.2 V
Figure 33. Load Transients In PWM
LMZ20502 fig_20.gif
VOUT = 3.3 V VIN = 4.2 V
Figure 35. Load Transients In AUTO Mode
LMZ20502 start_5v_3p3v_2A_new.gif
VOUT = 3.3 V VIN = 5 V IOUT = 1 A
Figure 37. Start-up

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