JAJSJR5A October   2019  – November 2020 LMR50410-Q1

PRODUCTION DATA  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 説明
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Switching Characteristics
    8. 7.8 System Characteristics
    9. 7.9 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Fixed Frequency Peak Current Mode Control
      2. 8.3.2 Adjustable Output Voltage
      3. 8.3.3 Enable
      4. 8.3.4 Minimum ON-Time, Minimum OFF-Time, and Frequency Foldback
      5. 8.3.5 Bootstrap Voltage
      6. 8.3.6 Overcurrent and Short Circuit Protection
      7. 8.3.7 Soft Start
      8. 8.3.8 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Shutdown Mode
      2. 8.4.2 Active Mode
      3. 8.4.3 CCM Mode
      4. 8.4.4 Light-Load Operation (PFM Version)
      5. 8.4.5 Light-Load Operation (FPWM Version)
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Custom Design With WEBENCH® Tools
        2. 9.2.2.2 Output Voltage Set-Point
        3. 9.2.2.3 Switching Frequency
        4. 9.2.2.4 Inductor Selection
        5. 9.2.2.5 Output Capacitor Selection
        6. 9.2.2.6 Input Capacitor Selection
        7. 9.2.2.7 Bootstrap Capacitor
        8. 9.2.2.8 Undervoltage Lockout Set-Point
        9. 9.2.2.9 Maximum Ambient Temperature
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Compact Layout for EMI Reduction
      2. 11.1.2 Feedback Resistors
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Development Support
        1. 12.1.1.1 Custom Design With WEBENCH® Tools
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 ドキュメントの更新通知を受け取る方法
    4. 12.4 サポート・リソース
    5. 12.5 Trademarks
    6. 12.6 静電気放電に関する注意事項
    7. 12.7 用語集
  13. 13Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

7.9 Typical Characteristics

VIN = 12 V, fSW = 2.1 Mhz ,TA = 25°C, unless otherwise specified.

GUID-20201027-CA0I-HPJJ-FLHL-R3JQ3B5ZPZDG-low.gif
fSW = 2.1 MHz VOUT = 3.3 V
Figure 7-1 3.3-V Efficiency versus Load Current
GUID-20200719-CA0I-S2WM-QXJ8-J3RMHL8589CK-low.gif
fSW = 2.1 MHz VOUT = 3.3 V PFM version
Figure 7-3 3.3-V Load Regulation
GUID-20200719-CA0I-QJZV-WJ8C-GCDQB22NN21V-low.gif
fSW = 2.1 MHz VOUT = 5 V PFM version
Figure 7-5 5-V Dropout
GUID-78148AEE-51B7-45FB-85F7-EB0F58725E8D-low.gif
Figure 7-7 IQ versus Temperature
GUID-E81FD66B-DBD0-4D6B-80FA-B17F2868E53B-low.gifFigure 7-9 Reference Voltage versus Temperature
GUID-20201027-CA0I-J6JZ-FB1B-474ZMXVQNJZM-low.gif
fSW = 2.1 MHz VOUT = 5 V
Figure 7-2 5-V Efficiency versus Load Current
GUID-20200719-CA0I-8SVL-43BH-X4RC77CDQK46-low.gif
fSW = 2.1 MHz VOUT = 5 V PFM version
Figure 7-4 5-V Load Regulation
GUID-20200719-CA0I-P1KW-BLPZ-47DMXP8DZWCW-low.gif
fSW = 2.1 MHz VOUT = 3.3 V PFM version
Figure 7-6 3.3-V Dropout
GUID-777A541E-AE2C-464B-9639-B6C4F86334C1-low.gif
Figure 7-8 VIN UVLO versus Temperature
GUID-20200721-CA0I-1DMD-J4VR-VLWCFWWNCVFQ-low.gifFigure 7-10 HS and LS Current Limit versus Temperature