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具有电源正常状态指示功能的 TPS4019x 4.5V 至 18V 输入、电压模式、同步降压控制器
ZHCSH96H
MARCH 2007 – May 2019
TPS40192
,
TPS40193
PRODUCTION DATA.
CONTENTS
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具有电源正常状态指示功能的 TPS4019x 4.5V 至 18V 输入、电压模式、同步降压控制器
1
特性
2
应用
3
说明
Device Images
简化应用示意图
4
修订历史记录
5
Pin Configuration and Functions
Pin 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
Dissipation Ratings
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Voltage Reference
7.3.2
Oscillator
7.3.3
UVLO
7.3.4
Enable Functionality
7.3.5
Start-Up Sequence and Timing
7.3.6
Selecting the Short Circuit Current
7.3.7
5-V Regulator
7.3.8
Prebias Start-Up
7.3.9
Drivers
7.3.10
Power Good
7.3.11
Thermal Shutdown
7.4
Device Functional Modes
7.4.1
Continuous Conduction Mode
7.4.2
Low-Quiescent Shutdown
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
Selecting the Switching Frequency
8.2.2.2
Inductor Selection
8.2.2.3
Output Capacitor Selection (C8)
8.2.2.4
Peak Current Rating of the Inductor
8.2.2.5
Input Capacitor Selection (C7)
8.2.2.6
MOSFET Switch Selection (Q1, Q2)
8.2.2.7
Boot Strap Capacitor
8.2.2.8
Input Bypass Capacitor (C6)
8.2.2.9
BP5 Bypass Capacitor (C5)
8.2.2.10
Input Voltage Filter Resistor (R11)
8.2.2.11
Short Circuit Protection (R9)
8.2.2.12
Feedback Compensation (Modeling the Power Stage)
8.2.2.13
Feedback Divider (R7, R8)
8.2.2.14
Error Amplifier Compensation (R6, R10, C1, C2, C3)
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Examples
11
器件和文档支持
11.1
器件支持
11.1.1
开发支持
11.1.1.1
相关器件
11.1.2
器件命名规则
11.2
文档支持
11.3
相关链接
11.4
接收文档更新通知
11.5
社区资源
11.6
商标
11.7
静电放电警告
11.8
Glossary
12
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)
DRC|10
MPDS117L
散热焊盘机械数据 (封装 | 引脚)
DRC|10
QFND013N
订购信息
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