JAJSLG5 december   2022 LM7481

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 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. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Charge Pump
      2. 8.3.2 Dual Gate Control (DGATE, HGATE)
        1. 8.3.2.1 Reverse Battery Protection (A, C, DGATE)
        2. 8.3.2.2 Load Disconnect Switch Control (HGATE, OUT)
      3. 8.3.3 Overvoltage Protection and Battery Voltage sensing (VSNS, SW, OV)
      4. 8.3.4 Low Iq Shutdown and Undervoltage Lockout (EN/UVLO)
    4. 8.4 Device Functional Modes
    5. 8.5 Application Examples
      1. 8.5.1 Redundant Supply OR-ing With Inrush Current Limiting, Overvoltage Protection and ON/OFF Control
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical 12-V Reverse Battery Protection Application
      1. 9.2.1 Design Requirements for 12-V Battery Protection
      2. 9.2.2 Automotive Reverse Battery Protection
      3. 9.2.3 Detailed Design Procedure
        1. 9.2.3.1 Design Considerations
        2. 9.2.3.2 Charge Pump Capacitance VCAP
        3. 9.2.3.3 Input and Output Capacitance
        4. 9.2.3.4 Hold-up Capacitance
        5. 9.2.3.5 Overvoltage Protection and Battery Monitor
      4. 9.2.4 MOSFET Selection: Blocking MOSFET Q1
      5. 9.2.5 MOSFET Selection: Hot-Swap MOSFET Q2
      6. 9.2.6 TVS selection
      7. 9.2.7 Application Curves
    3. 9.3 Do's and Don'ts
    4. 9.4 Power Supply Recommendations
      1. 9.4.1 Transient Protection
      2. 9.4.2 TVS Selection for 12-V Battery Systems
      3. 9.4.3 TVS Selection for 24-V Battery Systems
    5. 9.5 Layout
      1. 9.5.1 Layout Guidelines
      2. 9.5.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 ドキュメントの更新通知を受け取る方法
    2. 10.2 サポート・リソース
    3. 10.3 Trademarks
    4. 10.4 静電気放電に関する注意事項
    5. 10.5 用語集
  12. 11Mechanical, Packaging, and Orderable Information

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

6.6 Switching Characteristics

TJ = –55°C to +125°C; typical values at TJ = 25°C, V(A) = V(C) = V(OUT) = V(VS) = 12V, V(AC) = 20 mV, C(VCAP) = 0.1 µF, V(EN/UVLO) = 2 V, over operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
tDGATE_OFF(dly) DGATE Turnoff Delay during reverse voltage detection V(A) – V(C) = +30 mV to –100 mV to V(DGATE–A) < 1 V, C(DGATE–A) = 10 nF 0.5 0.875 µs
tDGATE_ON(dly) DGATE Turnon Delay during forward voltage detection V(A) – V(C) = –20 mV to +700 mV to V(DGATE-A) > 5 V, C(DGATE-A) = 10 nF 0.8 1.6 µs
tEN(dly)_DGATE DGATE Turnon Delay during EN/UVLO EN/UVLO ↑ to V(DGATE-A) > 5V, C(DGATE-A) = 10 nF 98 175 270 µs
tEN_OFF(deg)_DGATE DGATE Turnoff Deglitch during EN/UVLO EN/UVLO ↓ to DGATE ↓ 8.1 µs
tEN_OFF(deg)_HGATE HGATE Turnoff Deglitch during EN/UVLO EN/UVLO ↓ to HGATE ↓ 3 4.6 6 µs
tOVP_OFF(deg)_HGATE HGATE Turnoff Deglitch during OV OV ↑ to HGATE ↓ 3.98 5.4 µs
tOVP_ON(deg)_HGATE HGATE Turnon Deglitch during OV OV ↓ to HGATE ↑ 2.95 µs