ZHCSD24B
October 2014 – June 2024
TPS61169
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
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
Soft Start-Up
6.3.2
Open LED Protection
6.3.3
Shutdown
6.3.4
Current Program
6.3.5
LED Brightness Dimming
6.3.6
Undervoltage Lockout
6.3.7
Thermal Foldback and Thermal Shutdown
6.4
Device Functional Modes
6.4.1
Operation With CTRL
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
Inductor Selection
7.2.2.2
Schottky Diode Selection
7.2.2.3
Output Capacitor Selection
7.2.2.4
LED Current Set Resistor
7.2.2.5
Thermal Considerations
7.3
Application Curves
7.4
Power Supply Recommendations
7.5
Layout
7.5.1
Layout Guidelines
7.5.2
Layout Example
8
Device and Documentation Support
8.1
Device Support
8.2
接收文档更新通知
8.3
支持资源
8.4
Trademarks
8.5
静电放电警告
8.6
术语表
9
Revision History
10
Mechanical, Packaging, and Orderable Information
1
特性
2.7V 至 5.5V 输入电压
集成 40V、1.8A MOSFET
驱动高达 38V 的 LED 灯串
1.2A 最小开关电流限制
1.2MHz 开关频率
204mV 基准电压
内部补偿
PWM 亮度控制
LED 开路保护
欠压保护
内置软启动
热关断
效率高达 90%