ZHCS517E April   2000  – June 2019 LM2587

PRODUCTION DATA.  

  1. 1 特性
  2. 2 典型 应用
  3. 3 说明
    1.     Device Images
      1.      反激式稳压器
  4. 4 修订历史记录
  5. 5 Pin Configurations
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESDRatings
    3. 6.3  Recommended Operating Ratings
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics: 3.3 V
    6. 6.6  Electrical Characteristics: 5 V
    7. 6.7  Electrical Characteristics: 12 V
    8. 6.8  Electrical Characteristics: Adjustable
    9. 6.9  Electrical Characteristics: All Output Voltage Versions
    10. 6.10 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 Step-Up (Boost) Regulator Operation
  8. 8 Application And Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Typical Boost Regulator Applications
      2. 8.2.2 Typical Flyback Regulator Applications
        1. 8.2.2.1 Transformer Selection (T)
        2. 8.2.2.2 Transformer Footprints
          1. 8.2.2.2.0.1 T4
      3. 8.2.3 Design Requirements
      4. 8.2.4 Detailed Design Procedure
        1. 8.2.4.1 Custom Design With Webench® Tools
        2. 8.2.4.2 Programming Output Voltage (Selecting R1 And R2)
        3. 8.2.4.3 Short Circuit Condition
        4. 8.2.4.4 Flyback Regulator Input Capacitors
        5. 8.2.4.5 Switch Voltage Limits
        6. 8.2.4.6 Output Voltage Limitations
        7. 8.2.4.7 Noisy Input Line Condition)
        8. 8.2.4.8 Stability
    3. 8.3 Additional Application Examples
      1. 8.3.1 Test Circuits
  9. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
    3. 9.3 Heat Sink/Thermal Considerations
      1. 9.3.1 European Magnetic Vendor Contacts
      2. 9.3.2 Coilcraft
      3. 9.3.3 Pulse Engineering
  10. 10器件和文档支持
    1. 10.1 器件支持
      1. 10.1.1 第三方产品免责声明
      2. 10.1.2 开发支持
        1. 10.1.2.1 使用 Webench® 工具创建定制设计方案
    2. 10.2 接收文档更新通知
    3. 10.3 社区资源
    4. 10.4 商标
    5. 10.5 静电放电警告
    6. 10.6 Glossary
  11. 11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

6.10 Typical Characteristics

LM2587 1231648.png
Figure 1. Supply Current vs Temperature
LM2587 1231650.png
Figure 3. ΔReference Voltage vs Supply Voltage
LM2587 1231652.png
Figure 5. Current Limit vs Temperature
LM2587 1231654.png
Figure 7. Switch Saturation Voltage vs Temperature
LM2587 1231656.png
Figure 9. Oscillator Frequency vs Temperature
LM2587 1231658.png
Figure 11. Error Amp Voltage Gain vs Temperature
LM2587 1231611.png
A: Switch Voltage, 10 V/div B: Switch Current, 5 A/div C: Output Rectifier Current, 5 A/div D: Output Ripple Voltage, 100 mV/div
AC-Coupled
Horizontal: 2 μs/div
Figure 13. Switching Waveforms
LM2587 1231649.png
Figure 2. Reference Voltage vs Temperature
LM2587 1231651.png
Figure 4. Supply Current vs Switch Current
LM2587 1231653.png
Figure 6. Feedback Pin Bias Current vs Temperature
LM2587 1231655.png
Figure 8. Switch Transconductance vs Temperature
LM2587 1231657.png
Figure 10. Error Amp Transconductance vs Temperature
LM2587 1231659.png
Figure 12. Short Circuit Frequency vs Temperature
LM2587 1231612.png
Figure 14. VOUT Load Current Step Response