JAJSCD8C
August 2015 – May 2017
LP8861-Q1
PRODUCTION DATA.
1
特長
2
アプリケーション
システム効率
3
概要
概略回路図
4
改訂履歴
5
デバイス比較表
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
デバイスおよびドキュメントのサポート
12.1
デバイス・サポート
12.1.1
デベロッパー・ネットワークの製品に関する免責事項
12.2
ドキュメントのサポート
12.2.1
関連資料
12.3
ドキュメントの更新通知を受け取る方法
12.4
コミュニティ・リソース
12.5
商標
12.6
静電気放電に関する注意事項
12.7
Glossary
13
メカニカル、パッケージ、および注文情報
パッケージ・オプション
メカニカル・データ(パッケージ|ピン)
PWP|20
MHTS001G
サーマルパッド・メカニカル・データ
PWP|20
PPTD027Z
発注情報
jajscd8c_oa
jajscd8c_pm
9.2.1.2
Detailed Design Procedure