JAJSF12A March   2018  – January 2024 LMR14010A

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Fixed Frequency PWM Control
      2. 6.3.2 Bootstrap Voltage (CB)
      3. 6.3.3 Setting the Output Voltage
      4. 6.3.4 Enable ( SHDN ) and VIN Undervoltage Lockout
      5. 6.3.5 Current Limit
      6. 6.3.6 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Continuous Conduction Mode
      2. 6.4.2 Eco-mode
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
        1. 7.2.1.1 Step-By-Step Design Procedure
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Custom Design With WEBENCH® Tools
        2. 7.2.2.2 Output Inductor Selection
        3. 7.2.2.3 Output Capacitor Selection
        4. 7.2.2.4 Schottky Diode Selection
        5. 7.2.2.5 Input Capacitor Selection
        6. 7.2.2.6 Bootstrap Capacitor Selection
      3. 7.2.3 Application Performance Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
        1. 8.1.1.1 Custom Design With WEBENCH® Tools
    2. 8.2 ドキュメントの更新通知を受け取る方法
    3. 8.3 サポート・リソース
    4. 8.4 Trademarks
    5. 8.5 静電気放電に関する注意事項
    6. 8.6 用語集
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

7.2.3 Application Performance Curves

Unless otherwise noted, VIN = 12 V, L = 22 µH, COUT = 22 µF, TA = 25°C.

GUID-BAEFF8B7-8A3C-41F4-9933-D29D22F40EFF-low.gifFigure 7-2 Switching Node and Output Voltage Waveform (VIN = 12 V, VOUT = 5 V, ILoad = 1 A)
GUID-7630F208-BBAA-4496-8802-76B29808920E-low.gifFigure 7-4 Start-up Waveform (VIN = 18 V, VOUT= 12 V, ILoad= 800 mA)
GUID-C47894CC-FB18-46BA-8A90-4956610FEDE1-low.gifFigure 7-6 Start-Up Waveform (VIN = 12 V, VOUT = 5 V, ILoad = 800 mA)
GUID-8ADA2371-17CA-4DDE-83BD-4F1A69D6E5BB-low.gifFigure 7-8 Eco-mode Operation (VIN = 12 V, VOUT = 5 V, No Load)
GUID-69796185-6E54-49C2-B66E-C595177B0858-low.gifFigure 7-3 Load Transient Between 0.1 A and 1 A (VIN= 12 V, VOUT = 5 V)
GUID-E237D3A1-052F-4720-B00D-921E09B4B7DF-low.gifFigure 7-5 Shutdown Waveform (VIN = 18 V, VOUT = 12 V, ILoad= 800 mA)
GUID-6A3CEA86-2C55-4C79-B7E6-98DFC177F72C-low.gifFigure 7-7 Shutdown Waveform (VIN = 12 V, VOUT = 5 V, ILoad= 800 mA)