JAJSOR1D
june 2022 – august 2023
LM5177
PRODUCTION DATA
1
1
特長
2
アプリケーション
3
概要
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
Handling Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Typical Characteristics
7
Parameter Measurement Information
7.1
Gate Driver Rise Time and Fall Time
7.2
Gate Driver Dead (Transition) Time
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Power-On Reset (POR System)
8.3.2
Buck-Boost Control Scheme
8.3.2.1
Boost Mode
8.3.2.2
Buck Mode
8.3.2.3
Buck-Boost Mode
8.3.3
Power Save Mode
8.3.4
Supply Voltage Selection – VMAX Switch
8.3.5
Enable and Undervoltage Lockout
8.3.6
Oscillator Frequency Selection
8.3.7
Frequency Synchronization
8.3.8
Voltage Regulation Loop
8.3.9
Output Voltage Tracking
8.3.10
Slope Compensation
8.3.11
Configurable Soft Start
8.3.12
Peak Current Sensor
8.3.13
Current Monitoring and Current Limit Control Loop
8.3.14
Short Circuit - Hiccup Protection
8.3.15
nFLT Pin and Protections
8.3.16
Device Configuration Pin
8.3.17
Dual Random Spread Spectrum – DRSS
8.3.18
Gate Driver
8.4
Device Functional Modes
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Custom Design with WEBENCH Tools
9.2.2.2
Frequency
9.2.2.3
Feedback Divider
9.2.2.4
Inductor and Current Sense Resistor Selection
9.2.2.5
Slope Compensation
9.2.2.6
Output Capacitor
9.2.2.7
Input Capacitor
9.2.2.8
UVLO Divider
9.2.2.9
Soft-Start Capacitor
9.2.2.10
MOSFETs QH1 and QL1
9.2.2.11
MOSFETs QH2 and QL2
9.2.2.12
Frequency Compensation
9.2.2.13
External Component Selection
9.2.3
Application Curves
9.3
System Examples
9.3.1
Bi-Directional Power Backup
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.1.1
Power Stage Layout
11.1.2
Gate Driver Layout
11.1.3
Controller Layout
11.2
Layout Example
12
Device and Documentation Support
12.1
Device Support
12.1.1
サード・パーティ製品に関する免責事項
12.1.2
Development Support
12.1.2.1
Custom Design with WEBENCH Tools
12.2
ドキュメントの更新通知を受け取る方法
12.3
サポート・リソース
12.4
Trademarks
12.5
静電気放電に関する注意事項
12.6
用語集
13
Mechanical, Packaging, and Orderable Information
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)
DCP|38
MPDS520B
サーマルパッド・メカニカル・データ
DCP|38
PPTD170A
発注情報
jajsor1d_oa
9.2
Typical Application
Figure 9-1
Simplified Schematic of a Typical Application