ZHCSGW9
October 2017
LM2623-Q1
PRODUCTION DATA.
1
特性
2
应用
3
说明
4
修订历史记录
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
Gated Oscillator Control Scheme
7.3.2
Cycle-To-Cycle PFM
7.3.3
Shutdown
7.3.4
Internal Current Limit and Thermal Protection
7.4
Device Functional Modes
7.4.1
Pulse Frequency Modulation (PFM)
7.4.2
Low Voltage Start-Up
8
Applications 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
Non-Linear Effect
8.2.2.2
Choosing the Correct C3 Capacitor
8.2.2.3
Setting the Output Voltage
8.2.2.4
VDD Supply
8.2.2.5
Setting the Switching Frequency
8.2.2.6
Output Diode Selection
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.1.1
Boost Output Capacitor Placement
10.1.2
Schottky Diode Placement
10.1.3
Boost Input / VDD Capacitor Placement
10.2
Layout Example
10.3
WSON Package Devices
11
器件和文档支持
11.1
器件支持
11.1.1
Third-Party Products Disclaimer
11.2
文档支持
11.2.1
相关文档
11.3
接收文档更新通知
11.4
社区资源
11.5
商标
11.6
静电放电警告
11.7
Glossary
12
机械、封装和可订购信息
封装选项
机械数据 (封装 | 引脚)
NHL|14
MPDS421
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcsgw9_oa
4
修订历史记录
日期
修订版本
说明
2017 年 10 月
*
初始发行版