JAJSF76D September   2015  – June 2018 LMZ36002

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
    1.     Device Images
      1.      アプリケーション概略図
      2.      効率と出力電流との関係
  4. 4 改訂履歴
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 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  Switching Characteristics
    7. 6.7  Typical Characteristics
    8. 6.8  Typical Characteristics
    9. 6.9  Typical Characteristics
    10. 6.10 Typical Characteristics (Thermal Derating)
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Adjusting the Output Voltage
      2. 7.3.2  Switching Frequency (RT)
      3. 7.3.3  Recommended Operating Range
      4. 7.3.4  Synchronization (CLK)
      5. 7.3.5  Output Capacitor Selection
      6. 7.3.6  VERSA-COMP Pin Configurations
      7. 7.3.7  Input Capacitor Selection
      8. 7.3.8  Output On/Off Inhibit (INH/UVLO)
      9. 7.3.9  Under Voltage Lockout (UVLO)
      10. 7.3.10 Remote Sense
      11. 7.3.11 VBSEL
      12. 7.3.12 Soft-Start (SS/TR)
      13. 7.3.13 Power Good (PWRGD) and Pull-up (PWRGD_PU)
      14. 7.3.14 Overcurrent Protection
      15. 7.3.15 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Active Mode
      2. 7.4.2 Light Load Operation
      3. 7.4.3 Shutdown Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Minimum External Component Application
        1. 8.1.1.1 Design Requirements
        2. 8.1.1.2 Detailed Design Procedure
          1. 8.1.1.2.1 Custom Design With WEBENCH® Tools
          2. 8.1.1.2.2 Output Voltage Set-Point
          3. 8.1.1.2.3 RT and RTSEL
          4. 8.1.1.2.4 VERSA-COMP
          5. 8.1.1.2.5 VBSEL
          6. 8.1.1.2.6 Input Capacitors
          7. 8.1.1.2.7 Output Capacitors
          8. 8.1.1.2.8 Application Curves
      2. 8.1.2 Typical Application
        1. 8.1.2.1 Design Requirements
      3. 8.1.3 Detailed Design Procedure
        1. 8.1.3.1 Switching Frequency
        2. 8.1.3.2 Power Good
        3. 8.1.3.3 Inhibit Control
        4. 8.1.3.4 VERSA-COMP
        5. 8.1.3.5 VBSEL
        6. 8.1.3.6 Soft-Start Capacitors
        7. 8.1.3.7 Input Capacitors
        8. 8.1.3.8 Output Capacitors
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 EMI
  11. 11デバイスおよびドキュメントのサポート
    1. 11.1 デバイス・サポート
      1. 11.1.1 開発サポート
        1. 11.1.1.1 WEBENCH®ツールによるカスタム設計
      2. 11.1.2 デベロッパー・ネットワークの製品に関する免責事項
    2. 11.2 ドキュメントの更新通知を受け取る方法
    3. 11.3 コミュニティ・リソース
    4. 11.4 商標
    5. 11.5 静電気放電に関する注意事項
    6. 11.6 Glossary
  12. 12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

7.3.14 Overcurrent Protection

For protection against load faults, the LMZ36002 incorporates output overcurrent protection. Applying a load that exceeds the regulator's overcurrent threshold causes the output to shut down when the output voltage falls below the PWRGD threshold. Following shutdown, the module periodically attempts to recover by initiating a soft-start power-up as shown in Figure 32. This is described as a hiccup mode of operation, whereby the module continues in a cycle of successive shutdown and power up until the load fault is removed. During this period, the average current flowing into the fault is significantly reduced which reduces power dissipation. Once the fault is removed, the module automatically recovers and returns to normal operation as shown in Figure 33.

LMZ36002 currentlimiton.pngFigure 32. Overcurrent Limiting
LMZ36002 currentlimitoff.pngFigure 33. Removal of Overcurrent