JAJSLG5
december 2022
LM7481
PRODUCTION DATA
1
1
特長
2
アプリケーション
3
概要
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Switching Characteristics
6.7
Typical Characteristics
7
Parameter Measurement Information
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Charge Pump
8.3.2
Dual Gate Control (DGATE, HGATE)
8.3.2.1
Reverse Battery Protection (A, C, DGATE)
8.3.2.2
Load Disconnect Switch Control (HGATE, OUT)
8.3.3
Overvoltage Protection and Battery Voltage sensing (VSNS, SW, OV)
8.3.4
Low Iq Shutdown and Undervoltage Lockout (EN/UVLO)
8.4
Device Functional Modes
8.5
Application Examples
8.5.1
Redundant Supply OR-ing With Inrush Current Limiting, Overvoltage Protection and ON/OFF Control
9
Application and Implementation
9.1
Application Information
9.2
Typical 12-V Reverse Battery Protection Application
9.2.1
Design Requirements for 12-V Battery Protection
9.2.2
Automotive Reverse Battery Protection
9.2.3
Detailed Design Procedure
9.2.3.1
Design Considerations
9.2.3.2
Charge Pump Capacitance VCAP
9.2.3.3
Input and Output Capacitance
9.2.3.4
Hold-up Capacitance
9.2.3.5
Overvoltage Protection and Battery Monitor
9.2.4
MOSFET Selection: Blocking MOSFET Q1
9.2.5
MOSFET Selection: Hot-Swap MOSFET Q2
9.2.6
TVS selection
9.2.7
Application Curves
9.3
Do's and Don'ts
9.4
Power Supply Recommendations
9.4.1
Transient Protection
9.4.2
TVS Selection for 12-V Battery Systems
9.4.3
TVS Selection for 24-V Battery Systems
9.5
Layout
9.5.1
Layout Guidelines
9.5.2
Layout Example
10
Device and Documentation Support
10.1
ドキュメントの更新通知を受け取る方法
10.2
サポート・リソース
10.3
Trademarks
10.4
静電気放電に関する注意事項
10.5
用語集
11
Mechanical, 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)
DRR|12
MPSS085A
サーマルパッド・メカニカル・データ
DRR|12
PPTD366A
発注情報
jajslg5_oa
8.3
Feature Description