JAJSIZ3Y September   1997  – April 2020 LM317

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
    1.     Device Images
      1.      バッテリ充電器の回路
  4. 4 改訂履歴
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin 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 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 NPN Darlington Output Drive
      2. 8.3.2 Overload Block
      3. 8.3.3 Programmable Feedback
    4. 8.4 Device Functional Modes
      1. 8.4.1 Normal Operation
      2. 8.4.2 Operation With Low Input Voltage
      3. 8.4.3 Operation at Light Loads
      4. 8.4.4 Operation In Self Protection
  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
      3. 9.2.3 Application Curves
    3. 9.3 System Examples
      1. 9.3.1  0-V to 30-V Regulator Circuit
      2. 9.3.2  Adjustable Regulator Circuit With Improved Ripple Rejection
      3. 9.3.3  Precision Current-Limiter Circuit
      4. 9.3.4  Tracking Preregulator Circuit
      5. 9.3.5  1.25-V to 20-V Regulator Circuit With Minimum Program Current
      6. 9.3.6  Battery-Charger Circuit
      7. 9.3.7  50-mA Constant-Current Battery-Charger Circuit
      8. 9.3.8  Slow Turn-On 15-V Regulator Circuit
      9. 9.3.9  AC Voltage-Regulator Circuit
      10. 9.3.10 Current-Limited 6-V Charger Circuit
      11. 9.3.11 Adjustable 4-A Regulator Circuit
      12. 9.3.12 High-Current Adjustable Regulator Circuit
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12デバイスおよびドキュメントのサポート
    1. 12.1 ドキュメントの更新通知を受け取る方法
    2. 12.2 サポート・リソース
    3. 12.3 商標
    4. 12.4 静電気放電に関する注意事項
    5. 12.5 Glossary
  13. 13メカニカル、パッケージ、および注文情報

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

9.3.2 Adjustable Regulator Circuit With Improved Ripple Rejection

C2 helps to stabilize the voltage at the adjustment pin, which helps reject noise. Diode D1 exists to discharge C2 in case the output is shorted to ground.

LM317 apppin3_lvs044.gifFigure 13. Adjustable Regulator Circuit with Improved Ripple Rejection