ZHCSNC8A
February 2021 – March 2021
TPS541620
PRODUCTION DATA
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
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Fixed-Frequency, Internally Compensated Advanced-Current-Mode Control
7.3.2
Enable and UVLO
7.3.3
Internal LDO
7.3.4
Pre-biased Output Start-up
7.3.5
Current Sharing
7.3.6
Frequency Selection and Minimum On-Time and Off-Time
7.3.7
Ramp Compensation Selection
7.3.8
Soft Start
7.3.9
Remote Sense Function
7.3.10
Adjustable Output Voltage
7.3.11
Power Good
7.3.12
Overcurrent Protection
7.3.13
Overvoltage and Undervoltage Protection
7.3.14
Overtemperature Protection
7.3.15
Frequency Synchronization
7.4
Device Functional Modes
7.4.1
Operation Mode
8
Application and Implementation
8.1
Application Information
8.2
Typical Application - Dual Independent Outputs
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Switching Frequency
8.2.2.2
Output Inductor Selection
8.2.2.3
Output Capacitor
8.2.2.4
Input Capacitor
8.2.2.5
Output Voltage Resistors Selection
8.2.2.6
Adjustable Undervoltage Lockout
8.2.2.7
Bootstrap Capacitor Selection
8.2.2.8
BP5 Capacitor Selection
8.2.2.9
PGOOD Pullup Resistor
8.2.2.10
Current Limit
8.2.2.11
Soft-Start Time Selection
8.2.2.12
MODE1 and MODE2 Pins
8.2.3
Application Curves
8.2.4
Typical Application - 2-Phase Operation
8.2.4.1
Design Requirements
8.2.4.2
Detailed Design Procedure
8.2.4.2.1
Switching Frequency
8.2.4.2.2
Output Inductor Selection
8.2.4.2.3
Output Capacitor
8.2.4.2.4
Input Capacitor
8.2.4.2.5
Output Voltage Resistors Selection
8.2.4.2.6
Adjustable Undervoltage Lockout
8.2.4.2.7
Bootstrap Capacitor Selection
8.2.4.2.8
BP5 Capacitor Selection
8.2.4.2.9
PGOOD Pullup Resistor
8.2.4.2.10
Current Limit
8.2.4.2.11
Soft-Start Time Selection
8.2.4.2.12
MODE1 Pin
8.2.4.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
10.2.1
Thermal Performance
11
Device and Documentation Support
11.1
Device Support
11.1.1
第三方产品免责声明
11.2
接收文档更新通知
11.3
支持资源
11.4
Trademarks
11.5
静电放电警告
11.6
术语表
12
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
RPB|25
MPQF519
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcsnc8a_oa
zhcsnc8a_pm
11.5
静电放电警告
静电放电 (ESD) 会损坏这个集成电路。德州仪器 (TI) 建议通过适当的预防措施处理所有集成电路。如果不遵守正确的处理和安装程序,可能会损坏集成电路。
ESD 的损坏小至导致微小的性能降级,大至整个器件故障。精密的集成电路可能更容易受到损坏,这是因为非常细微的参数更改都可能会导致器件与其发布的规格不相符。