JAJSR13
December 2024
LMR60420
PRODMIX
1
1
特長
2
アプリケーション
3
概要
4
Device Comparison Table
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
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Enable and Undervoltage Lockout (UVLO)
7.3.2
Soft Start and Recovery from Dropout
7.3.3
Frequency Selection With RT
7.3.4
MODE/SYNC Pin Control
7.3.5
Output Voltage Selection
7.3.6
Current Limit
7.3.7
Hiccup Mode
7.3.8
Power-Good Function
7.3.9
Spread Spectrum
7.4
Device Functional Modes
7.4.1
Shutdown
7.4.2
Active Mode
7.4.2.1
Continuous Conduction Mode (CCM)
7.4.2.2
Auto Mode - Light Load Operation
7.4.2.3
FPWM Operation - Light Load Operation
7.4.2.4
Minimum On-Time
7.4.2.5
Dropout
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Switching Frequency Selection
8.2.2.2
Inductor Selection
8.2.2.3
Output Capacitor Selection
8.2.2.4
Input Capacitor Selection
8.2.2.5
Bootstrap Capacitor (CBOOT) Selection
8.2.2.6
FB Voltage Divider for Adjustable Output Voltages
8.2.2.6.1
Feedforward Capacitor (CFF) Selection
8.2.2.7
RPG - PG Pullup Resistor
8.2.3
Application Curves
8.3
Power Supply Recommendations
8.4
Layout
8.4.1
Layout Guidelines
8.4.1.1
Ground and Thermal Plane Considerations
8.4.2
Layout Example
9
Device and Documentation Support
9.1
Documentation Support
9.1.1
Related Documentation
9.2
ドキュメントの更新通知を受け取る方法
9.3
サポート・リソース
9.4
Trademarks
9.5
静電気放電に関する注意事項
9.6
用語集
10
Revision History
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)
RAK|9
MPQF742D
サーマルパッド・メカニカル・データ
発注情報
jajsr13_oa
2
アプリケーション
ファクトリ オートメーション / 制御
電化製品
ビル オートメーション
概略回路図 – 固定出力