JAJS933L September   1998  – June 2016 LM2672

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
  4. 4 改訂履歴
  5. 5 Description (continued)
  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 - 3.3 V
    6. 7.6  Electrical Characteristics - 5 V
    7. 7.7  Electrical Characteristics - 12 V
    8. 7.8  Electrical Characteristics - Adjustable
    9. 7.9  Electrical Characteristics - All Output Voltage Versions
    10. 7.10 Typical Characteristics
    11. 7.11 Typical Characteristics - Fixed Output Voltage Versions
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Switch Output
      2. 9.3.2 C Boost
      3. 9.3.3 SYNC
      4. 9.3.4 Feedback
    4. 9.4 Device Functional Modes
      1. 9.4.1 ON/OFF
      2. 9.4.2 Shutdown Mode
      3. 9.4.3 Active Mode
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Applications
      1. 10.2.1 Typical Application for Fixed Output Voltage Versions
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
          1. 10.2.1.2.1 Inductor Selection (L1)
          2. 10.2.1.2.2 Output Capacitor Selection (COUT)
          3. 10.2.1.2.3 Catch Diode Selection (D1)
          4. 10.2.1.2.4 Input Capacitor (CIN)
          5. 10.2.1.2.5 Boost Capacitor (CB)
          6. 10.2.1.2.6 Soft-Start Capacitor (CSS, Optional)
          7. 10.2.1.2.7 Frequency Synchronization (Optional)
        3. 10.2.1.3 Application Curves
      2. 10.2.2 Typical Application for Adjustable Output Voltage Versions
        1. 10.2.2.1 Design Requirements
        2. 10.2.2.2 Detailed Design Procedure
          1. 10.2.2.2.1 Programming Output Voltage
          2. 10.2.2.2.2 Inductor Selection (L1)
          3. 10.2.2.2.3 Output Capacitor SeIection (COUT)
          4. 10.2.2.2.4 Catch Diode Selection (D1)
          5. 10.2.2.2.5 Input Capacitor (CIN)
          6. 10.2.2.2.6 Boost Capacitor (CB)
        3. 10.2.2.3 Application Curve
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
      1. 12.1.1 WSON Package Devices
    2. 12.2 Layout Examples
  13. 13デバイスおよびドキュメントのサポート
    1. 13.1 ドキュメントのサポート
      1. 13.1.1 関連資料
    2. 13.2 ドキュメントの更新通知を受け取る方法
    3. 13.3 コミュニティ・リソース
    4. 13.4 商標
    5. 13.5 静電気放電に関する注意事項
    6. 13.6 Glossary
  14. 14メカニカル、パッケージ、および注文情報
    1. 14.1 DAP (WSONパッケージ)

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

11 Power Supply Recommendations

The input voltage for the power supply is connected to the VIN pin. In addition to providing energy to the load the input voltage also provides bias for the internal circuitry of the LM2672. For ensured performance, the input voltage must be in the range of 6.5 V to 40 V. For best performance of the power supply, the VIN pin must always be bypassed with an input capacitor placed close to this pin and GND.