JAJSKO7D October   2020  – March 2022 LMR43610-Q1 , LMR43620-Q1

PRODUCTION DATA  

  1. 特長
  2. アプリケーション
  3. 概要
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
  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 System Characteristics
    7. 7.7 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Enable, Start-Up, and Shutdown
      2. 8.3.2  External CLK SYNC (with MODE/SYNC)
        1. 8.3.2.1 Pulse-Dependent MODE/SYNC Pin Control
      3. 8.3.3  Adjustable Switching Frequency (with RT)
      4. 8.3.4  Power-Good Output Operation
      5. 8.3.5  Internal LDO, VCC, and VOUT/FB Input
      6. 8.3.6  Bootstrap Voltage and VBOOT-UVLO (BOOT Terminal)
      7. 8.3.7  Output Voltage Selection
      8. 8.3.8  Spread Spectrum
      9. 8.3.9  Soft Start and Recovery from Dropout
        1. 8.3.9.1 Recovery from Dropout
      10. 8.3.10 Current Limit and Short Circuit
      11. 8.3.11 Thermal Shutdown
      12. 8.3.12 Input Supply Current
    4. 8.4 Device Functional Modes
      1. 8.4.1 Shutdown Mode
      2. 8.4.2 Standby Mode
      3. 8.4.3 Active Mode
        1. 8.4.3.1 CCM Mode
        2. 8.4.3.2 Auto Mode – Light-Load Operation
          1. 8.4.3.2.1 Diode Emulation
          2. 8.4.3.2.2 Frequency Reduction
        3. 8.4.3.3 FPWM Mode – Light-Load Operation
        4. 8.4.3.4 Minimum On-Time (High Input Voltage) Operation
        5. 8.4.3.5 Dropout
  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  Choosing the Switching Frequency
        2. 9.2.2.2  Setting the Output Voltage
          1. 9.2.2.2.1 FB for Adjustable Output
        3. 9.2.2.3  Inductor Selection
        4. 9.2.2.4  Output Capacitor Selection
        5. 9.2.2.5  Input Capacitor Selection
        6. 9.2.2.6  CBOOT
        7. 9.2.2.7  VCC
        8. 9.2.2.8  CFF Selection
        9. 9.2.2.9  External UVLO
        10. 9.2.2.10 Maximum Ambient Temperature
      3. 9.2.3 Application Curves
    3. 9.3 What to Do and What Not to Do
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Ground and Thermal Considerations
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
      2. 12.1.2 Device Nomenclature
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 サポート・リソース
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  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

Revision History

Changes from Revision C (December 2021) to Revision D (March 2022)

  • 「特長」セクションに機能安全の箇条書き項目を追加Go
  • 2.5μA IQ 未満を反映するようにタイトルを変更。Go
  • 先頭ページの効率グラフを更新し、擬似ランダム拡散スペクトラムの言及をデュアル・ランダム拡散スペクトラムに変更Go
  • Updated Section 5 and included links to Device Nomenclature legend.Go
  • Updated BOOT nomenclature in Absolute Maximum Ratings.Go
  • Combined Electrical Characteristics table, Timing, and Switching characteristics tables. Included 5-V fixed output device information and included 1-A device current limit specifications. Added spread spectrum specificationGo
  • Updated BOOT nomenclature in the Electrical Characteristics table.Go
  • Changed pseudorandom to dual random spread spectrum.Go
  • Updated enable behavior and start-up images as well as VEN-WAKE from 0.4 V to 0.5 V.Go
  • Corrected PGOOD nomenclature.Go
  • Corrected VCC rail voltage and clarified informationGo
  • Updated BOOT nomenclature.Go
  • Corrected type of spread spectrum used by device.Go
  • Corrected current limit nomenclature.Go
  • Corrected information in Section 8.3.12 Go
  • Corrected the enable wake-up threshold voltage from 0.4 V to 0.7 V.Go
  • Removed information regarding VCC UVLO levels to remain consistent with information provided in the Electrical Characterisitcs. Go
  • Updated the nomenclature of the minimum input voltage from VIN_R to VINMIN to align with the Electrical Characteristics. Go
  • Changed IPEAK-MIN to IPEAKMIN to align with Electrical Characteristics nomenclature.Go
  • Changed FB to VOUT/FB to align with pin nomenclature.Go
  • Updated Figure 9-1 to reflect RT pin. Go
  • Changed 'pin 8' to 'VOUT/FB' in Section 9.2.2.2 Go
  • Changed ILIMIT and ISC to IVALMAX Go
  • Included maximum CFF limit.Go
  • Added 5-V fixed in Section 9.2.3 Go
  • Included Section 12.1.2 Go

Changes from Revision B (September 2021) to Revision C (December 2021)

  • ドキュメントのステータスを「事前情報」から「量産データ」に変更Go