JAJSB30I
August 2010 – April 2018
LM25119
PRODUCTION DATA.
1
特長
2
アプリケーション
3
概要
Device Images
代表的なアプリケーション回路
4
改訂履歴
5
概要(続き)
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
Switching Characteristics
7.7
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
High Voltage Start-Up Regulator
8.3.2
UVLO
8.3.3
Enable 2
8.3.4
Oscillator and Sync Capability
8.3.5
Error Amplifiers and PWM Comparators
8.3.6
Ramp Generator
8.3.7
Current Limit
8.3.8
Hiccup Mode Current Limiting
8.3.9
Soft Start
8.3.10
HO and LO Output Drivers
8.3.11
Maximum Duty Cycle
8.3.12
Thermal Protection
8.4
Device Functional Modes
8.4.1
Diode Emulation
9
Application and Implementation
9.1
Application Information
9.1.1
Miscellaneous Functions
9.1.2
Interleaved Two-Phase Operation
9.1.3
Interleaved 4-Phase Operation
9.2
Typical Applications
9.2.1
Dual-output Design Example
9.2.1.1
Design Requirements
9.2.1.1.1
External Components
9.2.1.2
Detailed Design Procedure
9.2.1.2.1
Timing Resistor
9.2.1.2.2
Output Inductor
9.2.1.2.3
Current Sense Resistor
9.2.1.2.4
Ramp Resistor and Ramp Capacitor
9.2.1.2.5
Output Capacitors
9.2.1.2.6
Input Capacitors
9.2.1.2.7
VCC Capacitor
9.2.1.2.8
Bootstrap Capacitor
9.2.1.2.9
Soft Start Capacitor
9.2.1.2.10
Restart Capacitor
9.2.1.2.11
Output Voltage Divider
9.2.1.2.12
UVLO Divider
9.2.1.2.13
MOSFET Selection
9.2.1.2.14
MOSFET Snubber
9.2.1.2.15
Error Amplifier Compensation
9.2.1.3
Application Curves
9.2.2
Two-Phase Design Example
9.2.2.1
Design Requirements
9.2.2.2
Detailed Design Procedure
9.2.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.1.1
Switching Jitter Root Causes and Solutions
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
コミュニティ・リソース
12.2
商標
12.3
静電気放電に関する注意事項
12.4
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)
RTV|32
MPQF166B
サーマルパッド・メカニカル・データ
RTV|32
QFND448B
発注情報
jajsb30i_oa
jajsb30i_pm
7
Specifications