ZHCSG19
March 2017
LM25141
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
Switching Characteristics
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
High Voltage Start-up Regulator
7.3.2
VCC Regulator
7.3.3
Oscillator
7.3.4
Synchronization
7.3.5
Frequency Dithering (Spread Spectrum)
7.3.6
Enable
7.3.7
Power Good
7.3.8
Output Voltage
7.3.8.1
Minimum Output Voltage Adjustment
7.3.9
Current Sense
7.3.10
DCR Current Sensing
7.3.11
Error Amplifier and PWM Comparator
7.3.12
Slope Compensation
7.3.13
Hiccup Mode Current Limiting
7.3.14
Standby Mode
7.3.15
Soft-Start
7.3.16
Diode Emulation
7.3.17
High and Low Side Drivers
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
Custom Design With WEBENCH® Tools
8.2.3
Inductor Calculation
8.2.4
Current Sense Resistor
8.2.5
Output Capacitor
8.2.6
Input Filter
8.2.6.1
EMI Filter Design
8.2.6.2
MOSFET Selection
8.2.6.3
Driver Slew Rate Control
8.2.6.4
Frequency Dithering
8.2.7
8.9 Control Loop
8.2.7.1
Feedback Compensator
8.2.8
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.1.1
Layout Procedure
10.2
Layout Examples
11
器件和文档支持
11.1
使用 WEBENCH® 工具创建定制设计
11.2
接收文档更新通知
11.3
社区资源
11.4
商标
11.5
静电放电警告
11.6
Glossary
12
机械、封装和可订购信息
封装选项
机械数据 (封装 | 引脚)
RGE|24
MPQF124G
散热焊盘机械数据 (封装 | 引脚)
RGE|24
QFND008AA
订购信息
zhcsg19_oa
4
修订历史记录
日期
修订版本
说明
2017 年 3 月
*
初始发行版。