ZHCSSC1B
June 2015 – December 2024
LV14240
PRODUCTION DATA
1
1
特性
2
应用
3
说明
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
Switching Characteristics
5.7
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
Fixed Frequency Peak Current Mode Control
6.3.2
Slope Compensation
6.3.3
Low Dropout Operation and Bootstrap Voltage (BOOT)
6.3.4
Adjustable Output Voltage
6.3.5
Enable and Adjustable Undervoltage Lockout
6.3.6
External Soft Start
6.3.7
Switching Frequency and Synchronization (RT/SYNC)
6.3.8
Overcurrent and Short-Circuit Protection
6.3.9
Overvoltage Protection
6.3.10
Thermal Shutdown
6.4
Device Functional Modes
6.4.1
Pulse Skipping Mode
7
Application and Implementation
7.1
Application Information
7.2
Typical Application
7.2.1
Design Requirements
7.2.2
Detailed Design Procedure
7.2.2.1
Output Voltage Set-Point
7.2.2.2
Switching Frequency
7.2.2.3
Output Inductor Selection
7.2.2.4
Output Capacitor Selection
7.2.2.5
Schottky Diode Selection
7.2.2.6
Input Capacitor Selection
7.2.2.7
Bootstrap Capacitor Selection
7.2.2.8
Soft-Start Capacitor Selection
7.2.3
Application Curves
7.3
Power Supply Recommendations
7.4
Layout
7.4.1
Layout Guidelines
7.4.2
Layout Example
8
Device and Documentation Support
8.1
接收文档更新通知
8.2
支持资源
8.3
Trademarks
8.4
静电放电警告
8.5
术语表
9
Revision History
10
Mechanical, Packaging, and Orderable Information
8.4
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。