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LM5175 42V 宽 VIN 同步 4 开关 降压 - 升压控制器
ZHCSDH1A
October 2015 – May 2016
LM5175
PRODUCTION DATA.
CONTENTS
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LM5175 42V 宽 VIN 同步 4 开关 降压 - 升压控制器
1
特性
2
应用
3
说明
4
简化电路原理图
5
修订历史记录
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
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Fixed Frequency Valley/Peak Current Mode Control with Slope Compensation
8.3.2
VCC Regulator and Optional BIAS Input
8.3.3
Enable/UVLO
8.3.4
Soft-Start
8.3.5
Overcurrent Protection
8.3.6
Average Input/Output Current Limiting
8.3.7
CCM/DCM Operation
8.3.8
Frequency and Synchronization (RT/SYNC)
8.3.9
Frequency Dithering
8.3.10
Output Overvoltage Protection (OVP)
8.3.11
Power Good (PGOOD)
8.3.12
Gm Error Amplifier
8.3.13
Integrated Gate Drivers
8.3.14
Thermal Shutdown
8.4
Device Functional Modes
8.4.1
Shutdown, Standby, and Operating Modes
8.4.2
MODE Pin Configuration
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
Frequency
9.2.2.2
VOUT
9.2.2.3
Inductor Selection
9.2.2.4
Output Capacitor
9.2.2.5
Input Capacitor
9.2.2.6
Sense Resistor (RSENSE)
9.2.2.7
Slope Compensation
9.2.2.8
UVLO
9.2.2.9
Soft-Start Capacitor
9.2.2.10
Dither Capacitor
9.2.2.11
MOSFETs QH1 and QL1
9.2.2.12
MOSFETs QH2 and QL2
9.2.2.13
Frequency Compensation
9.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
器件和文档支持
12.1
文档支持
12.1.1
相关文档
12.2
社区资源
12.3
商标
12.4
静电放电警告
12.5
Glossary
13
机械、封装和可订购信息
重要声明
封装选项
机械数据 (封装 | 引脚)
RHF|28
MPQF251C
PWP|28
MPDS373B
散热焊盘机械数据 (封装 | 引脚)
RHF|28
QFND264B
PWP|28
PPTD396
订购信息
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