JAJSBZ5C April   2014  – April 2019 LM46002

PRODUCTION DATA.  

1. 1 特長
2. 2 アプリケーション
3. 3 概要
   1.     Device Images
      1.      概略回路図
      2.      放射エミッションのグラフ VIN = 24V、VOUT =3.3V、FS = 500kHz、IOUT = 2A
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 Timing Requirements
   7. 6.7 Switching Characteristics
   8. 6.8 Typical Characteristics
7. 7 Detailed Description
   1. 7.1 Overview
   2. 7.2 Functional Block Diagram
   3. 7.3 Feature Description
      1. 7.3.1  Fixed-Frequency, Peak-Current-Mode-Controlled, Step-Down Regulator
      2. 7.3.2  Light Load Operation
      3. 7.3.3  Adjustable Output Voltage
      4. 7.3.4  Enable (ENABLE)
      5. 7.3.5  VCC, UVLO, and BIAS
      6. 7.3.6  Soft Start and Voltage Tracking (SS/TRK)
      7. 7.3.7  Switching Frequency (RT) and Synchronization (SYNC)
      8. 7.3.8  Minimum ON-Time, Minimum OFF-Time, and Frequency Foldback at Dropout Conditions
      9. 7.3.9  Internal Compensation and CFF
      10. 7.3.10 Bootstrap Voltage (BOOT)
      11. 7.3.11 Power Good (PGOOD)
      12. 7.3.12 Overcurrent and Short-Circuit Protection
      13. 7.3.13 Thermal Shutdown
   4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode
      2. 7.4.2 Standby Mode
      3. 7.4.3 Active Mode
      4. 7.4.4 CCM Mode
      5. 7.4.5 Light Load Operation
      6. 7.4.6 Self-Bias Mode
8. 8 Applications and Implementation
   1. 8.1 Application Information
   2. 8.2 Typical Applications
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
         1. 8.2.2.1  Custom Design With WEBENCH® Tools
         2. 8.2.2.2  Output Voltage Setpoint
         3. 8.2.2.3  Switching Frequency
         4. 8.2.2.4  Input Capacitors
         5. 8.2.2.5  Inductor Selection
         6. 8.2.2.6  Output Capacitor Selection
         7. 8.2.2.7  Feed-Forward Capacitor
         8. 8.2.2.8  Bootstrap Capacitors
         9. 8.2.2.9  VCC Capacitor
         10. 8.2.2.10 BIAS Capacitors
         11. 8.2.2.11 Soft-Start Capacitors
         12. 8.2.2.12 Undervoltage Lockout Setpoint
         13. 8.2.2.13 PGOOD
      3. 8.2.3 Application Performance Curves
9. 9 Power Supply Recommendations
10. 10Layout
    1. 10.1 Layout Guidelines
       1. 10.1.1 Compact Layout for EMI Reduction
       2. 10.1.2 Ground Plane and Thermal Considerations
       3. 10.1.3 Feedback Resistors
    2. 10.2 Layout Example
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. 11.2 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