JAJSB34I
January 2011 – August 2021
LMZ14201H
PRODUCTION DATA
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
Typical Characteristics
7
Detailed Description
7.1
Overview
7.1.1
COT Control Circuit Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Output Overvoltage Comparator
7.3.2
Current Limit
7.3.3
Thermal Protection
7.3.4
Zero Coil Current Detection
7.3.5
Prebiased Start-Up
7.4
Device Functional Modes
7.4.1
Discontinuous Conduction and Continuous Conduction Modes
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
Design Steps for the LMZ14201H Application
8.2.2.1.1
Enable Divider, RENT and RENB Selection
8.2.2.1.2
Output Voltage Selection
8.2.2.1.3
Soft-Start Capacitor, CSS, Selection
8.2.2.1.4
Output Capacitor, CO, Selection
8.2.2.1.4.1
Capacitance
8.2.2.1.4.2
ESR
8.2.2.1.5
Input Capacitor, CIN, Selection
8.2.2.1.6
ON-Time, RON, Resistor Selection
8.2.2.1.6.1
Discontinuous Conduction and Continuous Conduction Mode Selection
8.2.3
Application Curve
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.1.1
Power Module SMT Guidelines
10.2
Layout Example
10.2.1
Power Dissipation and Board Thermal Requirements
11
Device and Documentation Support
11.1
Documentation Support
11.1.1
Related Documentation
11.2
Receiving Notification of Documentation Updates
11.3
サポート・リソース
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
Glossary
12
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）
NDW|7
MMSF024
サーマルパッド・メカニカル・データ
発注情報
jajsb34i_oa
jajsb34i_pm
2
アプリケーション
12V と 24V の各レールへの中間バス変換
時間に制約のあるプロジェクト
スペースに制限があり、熱の要件が厳しいアプリケーション
負出力電圧アプリケーション