ZHCSE41C
August 2015 – May 2017
LP8861-Q1
PRODUCTION DATA.
1
特性
2
应用
系统效率
3
说明
简化原理图
4
修订历史记录
5
器件比较表
6
Pin Configuration and Functions
Pin Functions
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
Internal LDO Electrical Characteristics
7.7
Protection Electrical Characteristics
7.8
Power Line FET Control Electrical Characteristics
7.9
Current Sinks Electrical Characteristics
7.10
PWM Brightness Control Electrical Characteristics
7.11
Boost/SEPIC Converter Characteristics
7.12
Logic Interface Characteristics
7.13
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Integrated Boost/SEPIC Converter
8.3.2
Internal LDO
8.3.3
LED Current Sinks
8.3.3.1
Current Sink Configuration
8.3.3.2
Current Setting
8.3.3.3
Brightness Control
8.3.4
Power-Line FET Control
8.3.5
LED Current Dimming With External Temperature Sensor
8.3.6
Protection and Fault Detection
8.3.6.1
Adaptive Boost Control and Functionality of LED Fault Comparators
8.3.6.2
Overview of the Fault/Protection Schemes
8.4
Device Functional Modes
8.4.1
Device States
9
Application and Implementation
9.1
Application Information
9.2
Typical Applications
9.2.1
Typical Application for 4 LED Strings
9.2.1.1
Design Requirements
9.2.1.2
Detailed Design Procedure
9.2.1.2.1
Inductor Selection
9.2.1.2.2
Output Capacitor Selection
9.2.1.2.3
Input Capacitor Selection
9.2.1.2.4
LDO Output Capacitor
9.2.1.2.5
Diode
9.2.1.2.6
Power Line Transistor
9.2.1.2.7
Input Current Sense Resistor
9.2.1.3
Application Curves
9.2.2
High Output Current Application
9.2.2.1
Design Requirements
9.2.2.2
Detailed Design Procedure
9.2.2.3
Application Curves
9.2.3
SEPIC Mode Application
9.2.3.1
Design Requirements
9.2.3.2
Detailed Design Procedure
9.2.3.2.1
Diode
9.2.3.2.2
Inductor
9.2.3.3
Application Curves
9.2.4
Application with Temperature Based LED Current De-rating
9.2.4.1
Design Requirements
9.2.4.2
Detailed Design Procedure
9.2.4.3
Application Curve
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
器件和文档支持
12.1
器件支持
12.1.1
第三方产品免责声明
12.2
文档支持
12.2.1
相关文档
12.3
接收文档更新通知
12.4
社区资源
12.5
商标
12.6
静电放电警告
12.7
术语表
13
机械、封装和可订购信息
8.4
Device Functional Modes