ZHCSJY0B
June 2012 – June 2019
LMR12015
,
LMR12020
PRODUCTION DATA.
1
特性
2
应用
3
说明
Device Images
典型应用电路
4
修订历史记录
5
Pin Configuration and Functions
Pin Descriptions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
Recommended Operating Ratings
6.3
Electrical Characteristics
6.4
Typical Performance Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Boost Function
7.3.2
Low Input Voltage Considerations
7.3.3
High Output Voltage Considerations
7.3.4
Frequency Synchronization
7.3.5
Current Limit
7.3.6
Frequency Foldback
7.3.7
Soft Start
7.3.8
Output Overvoltage Protection
7.3.9
Undervoltage Lockout
7.3.10
Thermal Shutdown
7.4
Device Operation Modes
7.4.1
Enable Pin / Shutdown Mode
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Detailed Design Procedure
8.2.1.1
Custom Design With WEBENCH® Tools
8.2.1.2
Inductor Selection
8.2.1.2.1
Inductor Calculation Example
8.2.1.2.2
Inductor Material Selection
8.2.1.3
Input Capacitor
8.2.1.4
Output Capacitor
8.2.1.5
Catch Diode
8.2.1.6
Boost Diode (Optional)
8.2.1.7
Boost Capacitor
8.2.1.8
Output Voltage
8.2.1.9
Feedforward Capacitor (Optional)
8.2.1.10
Calculating Efficiency and Junction Temperature
8.2.1.10.1
Schottky Diode Conduction Losses
8.2.1.10.2
Inductor Conduction Losses
8.2.1.10.3
MOSFET Conduction Losses
8.2.1.10.4
MOSFET Switching Losses
8.2.1.10.5
IC Quiescent Losses
8.2.1.10.6
MOSFET Driver Losses
8.2.1.10.7
Total Power Losses
8.2.1.10.8
Efficiency Calculation Example
8.2.1.10.9
Calculating the LMR2015/20 Junction Temperature
8.2.2
Application Curves
8.2.3
LMR12015/20 Circuit Examples
9
Layout
9.1
Layout Considerations
9.1.1
Compact Layout
9.1.2
Ground Plane and Shape Routing
9.1.3
FB Loop
9.1.4
PCB Summary
10
器件和文档支持
10.1
器件支持
10.1.1
第三方米6体育平台手机版_好二三四免责声明
10.1.2
开发支持
10.1.2.1
使用 WEBENCH® 工具创建定制设计
10.2
相关链接
10.3
接收文档更新通知
10.4
社区资源
10.5
商标
10.6
静电放电警告
10.7
Glossary
11
机械、封装和可订购信息
封装选项
机械数据 (封装 | 引脚)
DSC|10
MPDS239E
散热焊盘机械数据 (封装 | 引脚)
DSC|10
QFND489A
订购信息
zhcsjy0b_oa
zhcsjy0b_pm
9
Layout
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