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具有使能功能的 TPS3431标准可编程监视器计时器
ZHCSIJ7A
July 2018 – October 2021
TPS3431
PRODUCTION DATA
CONTENTS
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具有使能功能的 TPS3431标准可编程监视器计时器
1
特性
2
应用
3
说明
4
Revision History
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
Timing Requirements
6.7
Timing Diagrams
6.8
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Enable Input (EN) and Enable Output (ENOUT)
7.3.2
Watchdog Mode
7.3.2.1
CWD
7.3.2.2
Watchdog Input WDI
7.3.2.3
Watchdog Output WDO
7.3.2.4
SET1
7.4
Device Functional Modes
7.4.1
VDD is Below VPOR ( VDD < VPOR)
7.4.2
Above Power-On-Reset, But Less Than VDD(min) (VPOR ≤ VDD < VDD(min))
7.4.3
Normal Operation (VDD ≥ VDD(min))
8
Application and Implementation
8.1
Application Information
8.1.1
CWD Functionality
8.1.1.1
Factory-Programmed Timing Options
8.1.1.2
CWD Adjustable Capacitor Watchdog Timeout
8.2
Typical Application
8.2.1
Design 1 Requirements
8.2.2
Detailed Design 1 Procedure
8.2.2.1
Calculating WDO Pullup Resistor Design 1
8.2.2.2
Setting the Watchdog Design 1
8.2.3
Application Curves Design 1
8.3
Programmable Application
8.3.1
Design 2 Requirements
8.3.2
Detailed Design 2 Procedure
8.3.2.1
Calculating WDO Pullup Resistor Design 2
8.3.2.2
Setting the Watchdog Design 2
8.3.2.3
Watchdog Disabled During Initialization Period Design 2
8.3.2.4
Programmable Disable Feature Design 2
8.3.3
Application Curves Design 2
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.2
Documentation Support
11.2.1
Related Documentation
11.3
接收文档更新通知
11.4
支持资源
11.5
Trademarks
11.6
Electrostatic Discharge Caution
11.7
术语表
12
Mechanical, Packaging, and Orderable Information
重要声明
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