ZHCSME3
November 2020
TPS27SA08
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
Device Summary Table
6
Pin Configuration and Functions
6.1
Recommended Connections for Unused Pins
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
Switching Characteristics
7.7
SNS Timing Characteristics
7.8
Typical Characteristics
8
Parameter Measurement Information
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Protection Mechanisms
9.3.1.1
Thermal Shutdown
9.3.1.2
Current Limit
9.3.1.2.1
Current Limit Foldback
9.3.1.2.2
Undervoltage Lockout (UVLO)
9.3.1.2.3
VBB during Short-to-Ground
9.3.1.3
Energy Limit
9.3.1.4
Voltage Transients
9.3.1.4.1
Driving Inductive and Capacitive Loads
9.3.1.5
Reverse supply
9.3.1.6
Fault Event – Timing Diagrams
9.3.2
Diagnostic Mechanisms
9.3.2.1
VOUT Short-to-supply and Open-Load
9.3.2.1.1
Detection With Switch Enabled
9.3.2.1.2
Detection With Switch Disabled
9.3.2.2
SNS Output
9.3.2.2.1
RSNS Value
9.3.2.2.1.1
High Accuracy Load Current Sense
9.3.2.2.1.2
SNS Output Filter
9.3.2.3
ST Pin
9.3.2.4
Fault Indication and SNS Mux
9.3.2.5
Resistor Sharing
9.3.2.6
High-Frequency, Low Duty-Cycle Current Sensing
9.4
Device Functional Modes
9.4.1
Off
9.4.2
Standby
9.4.3
Diagnostic
9.4.4
Standby Delay
9.4.5
Active
9.4.6
Fault
10
Application and Implementation
10.1
Application Information
10.1.1
Ground Protection Network
10.1.2
Interface With Microcontroller
10.1.3
I/O Protection
10.1.4
Inverse Current
10.1.5
Loss of GND
10.1.6
Thermal Information
10.2
Typical Application
10.2.1
Design Requirements
10.2.2
Detailed Design Procedure
10.2.2.1
Thermal Considerations
10.2.2.2
Diagnostics
10.2.2.2.1
Selecting the RISNS Value
10.2.3
Application Curves
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
13
Device and Documentation Support
13.1
Device Support
13.1.1
Related Documentation
13.2
Trademarks
13.3
静电放电警告
13.4
术语表
14
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
PWP|16
MPDS371A
散热焊盘机械数据 (封装 | 引脚)
PWP|16
PPTD352A
订购信息
zhcsme3_oa
zhcsme3_pm
1
特性
具有典型 9mΩ R
ON
(T
J
= 25°C) 的单通道智能高侧开关
通过过流保护提高可靠性:
电流限制阈值标称值为 20A
在达到阈值时进行电流限制(钳位)
强大的集成输出保护:
集成热保护
接地短路和电源短路保护
在
电源反向
期间 FET 自动导通
发生失电和接地失效时自动关闭
集成输出钳位对电感负载进行消磁
可配置故障处理
可对模拟检测输出进行配置,以精确测量:
负载电流
电源电压
器件温度
将 FLT 指示返回到 MCU
在关断状态下和发生 GND 短路时进行开路负载检测
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