JAJSQL9C
may 2018 – august 2023
LV3842
ADVANCE INFORMATION
1
1
特長
2
アプリケーション
3
概要
4
Revision History
5
Device Comparison Table
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Timing Requirements
7.7
Switching Characteristics
7.8
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Fixed Frequency Peak Current Mode Control
8.3.2
Adjustable Output Voltage
8.3.3
Enable
8.3.4
Minimum ON-Time, Minimum OFF-Time and Frequency Foldback
8.3.5
Bootstrap Voltage
8.3.6
Overcurrent and Short-Circuit Protection
8.3.7
Soft Start
8.3.8
Thermal Shutdown
8.4
Device Functional Modes
8.4.1
Shutdown Mode
8.4.2
Active Mode
8.4.3
CCM Mode
8.4.4
Light-Load Operation (PFM Version)
8.4.5
Light-Load Operation (FPWM Version)
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Output Voltage Set-Point
9.2.2.2
Inductor Selection
9.2.2.3
Output Capacitor Selection
9.2.2.4
Input Capacitor Selection
9.2.2.5
Bootstrap Capacitor
9.2.2.6
Undervoltage Lockout Set-Point
9.2.3
Application Curves
9.3
Power Supply Recommendations
9.4
Layout
9.4.1
Layout Guidelines
9.4.2
Compact Layout for EMI Reduction
9.4.3
Feedback Resistors
9.4.4
Layout Example
10
Device and Documentation Support
10.1
Documentation Support
10.1.1
Related Documentation
10.2
ドキュメントの更新通知を受け取る方法
10.3
サポート・リソース
10.4
Trademarks
10.5
静電気放電に関する注意事項
10.6
用語集
11
Mechanical, Packaging, and Orderable Information
11.1
Tape and Reel 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)
DBV|6
MPDS026Q
サーマルパッド・メカニカル・データ
発注情報
jajsql9c_oa
9.4.4
Layout Example
Figure 9-10
Layout