JAJSJD7C February   2022  – December 2023 LMQ66410-Q1 , LMQ66420-Q1 , LMQ66430-Q1

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Device Comparison Table
  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 System Characteristics
    7. 6.7 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  Enable, Start-Up, and Shutdown
      2. 7.3.2  External CLK SYNC (With MODE/SYNC)
        1. 7.3.2.1 Pulse-Dependent MODE/SYNC Pin Control
      3. 7.3.3  Power-Good Output Operation
      4. 7.3.4  Internal LDO, VCC, and VOUT/FB Input
      5. 7.3.5  Bootstrap Voltage and VBOOT-UVLO (BOOT Terminal)
      6. 7.3.6  Output Voltage Selection
      7. 7.3.7  Spread Spectrum
      8. 7.3.8  Soft Start and Recovery from Dropout
        1. 7.3.8.1 Recovery from Dropout
      9. 7.3.9  Current Limit and Short Circuit
      10. 7.3.10 Thermal Shutdown
      11. 7.3.11 Input Supply Current
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode
      2. 7.4.2 Standby Mode
      3. 7.4.3 Active Mode
        1. 7.4.3.1 CCM Mode
        2. 7.4.3.2 Auto Mode – Light Load Operation
          1. 7.4.3.2.1 Diode Emulation
          2. 7.4.3.2.2 Frequency Reduction
        3. 7.4.3.3 FPWM Mode – Light Load Operation
        4. 7.4.3.4 Minimum On-Time (High Input Voltage) Operation
        5. 7.4.3.5 Dropout
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design 1 - Automotive Synchronous Buck Regulator at 2.2 MHz
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1  Choosing the Switching Frequency
          2. 8.2.1.2.2  Setting the Output Voltage
            1. 8.2.1.2.2.1 VOUT / FB for Adjustable Output
          3. 8.2.1.2.3  Inductor Selection
          4. 8.2.1.2.4  Output Capacitor Selection
          5. 8.2.1.2.5  Input Capacitor Selection
          6. 8.2.1.2.6  CBOOT
          7. 8.2.1.2.7  VCC
          8. 8.2.1.2.8  CFF Selection
          9. 8.2.1.2.9  External UVLO
          10. 8.2.1.2.10 Maximum Ambient Temperature
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Design 2 - Automotive Synchronous Buck Regulator at 400 kHz
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curves
    3. 8.3 Best Design Practices
    4. 8.4 Power Supply Recommendations
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
        1. 8.5.1.1 Ground and Thermal Considerations
      2. 8.5.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 サード・パーティ製品に関する免責事項
      2. 9.1.2 Device Nomenclature
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 ドキュメントの更新通知を受け取る方法
    4. 9.4 サポート・リソース
    5. 9.5 Trademarks
    6. 9.6 静電気放電に関する注意事項
    7. 9.7 用語集
  11. 10Revision History
  12. 11Mechanical, 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

10 Revision History

Changes from Revision B (May 2023) to Revision C (December 2023)

  • パッケージのピン数を訂正。Go
  • Added LMQ66430MA5RXBRQ1, LMQ66430MA3RXBRQ1, LMQ66420MA5RXBRQ1, LMQ66410MA3RXBRQ1, LMQ66410MA5RXBRQ1 to the Device Comparison Table. Deleted preview tag from remaining OPNs.Go
  • Changed pin numbering from 15 to 14. The GND/DAP is not included in the pin numbering.Go
  • Changed Device Nomenclature frequency trim option 'C' from 2 MHz to 2.2 MHz and changed the number of pins from 15 to 14. The GND/DAP is not included in the pin count.Go

Changes from Revision A (December 2022) to Revision B (May 2023)

  • 「特長」セクションの上部に機能安全の箇条書き項目を配置。 Go
  • 1A および 2A オプションから「プレビュー」タグを削除。RT バリアントへの参照を削除。Go
  • Removed 'LMR' orderables from the Device Comparison Table Go
  • Added LMQ66420MA3RXBRQ1 to the Device Comparison Table Go
  • Added note regarding other device orderable optionsGo
  • Removed references to RT pin and LMQ variants. Included pin 4 and pin 5 must be floating.Go
  • Included 1-A and 2-A current limit information and 400-kHz and 2.2-MHz fixed frequency specifications as well as IBIAS specification for 3.3-V fixed and 5-V fixed. Go
  • Removed RT pin from the functional block diagram and removed note regarding LMR variantsGo
  • Corrected the delay time from when EN goes high to when the part begins to switch from 1 ms to 2.5 ms.Go
  • Removed references to LMR variants. Go
  • Included recommended passive component tables for the 1-A and 2-A variants.Go
  • Corrected typo in stated output voltage from 5-V to 3.3-V.Go
  • Corrected recommended inductor K value from 0.3 to 0.2.Go
  • Removed references to LMR variants. Go

Changes from Revision * (February 2022) to Revision A (December 2022)

  • ステータスを「事前情報」から「量産データ」に変更Go