JAJSEV5E
February 2018 – July 2020
LMR23625
PRODUCTION DATA
1
特長
2
アプリケーション
3
概要
4
Revision History
5
Pin Configuration and Functions
Pin Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Timing Requirements
6.7
Switching Characteristics
6.8
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Fixed-Frequency Peak-Current-Mode Control
7.3.2
Adjustable Output Voltage
7.3.3
Enable/Sync
7.3.4
VCC, UVLO
7.3.5
Minimum ON-time, Minimum OFF-time and Frequency Foldback at Drop-out Conditions
7.3.6
Internal Compensation and CFF
7.3.7
Bootstrap Voltage (BOOT)
7.3.8
Overcurrent and Short-Circuit Protection
7.3.9
Thermal Shutdown
7.4
Device Functional Modes
7.4.1
Shutdown Mode
7.4.2
Active Mode
7.4.3
CCM Mode
7.4.4
Light Load Operation (PFM Option)
7.4.5
Light Load Operation (FPWM Option)
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Custom Design With WEBENCH® Tools
8.2.2.2
Output Voltage Setpoint
8.2.2.3
Switching Frequency
8.2.2.4
Inductor Selection
8.2.2.5
Output Capacitor Selection
8.2.2.6
Feed-forward Capacitor
8.2.2.7
Input Capacitor Selection
8.2.2.8
Bootstrap Capacitor Selection
8.2.2.9
VCC Capacitor Selection
8.2.2.10
Undervoltage Lockout Set-Point
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
10.3
Compact Layout for EMI Reduction
10.4
Ground Plane and Thermal Considerations
10.5
Feedback Resistors
11
Device and Documentation Support
11.1
Device Support
11.1.1
Development Support
11.1.1.1
Custom Design With WEBENCH® Tools
11.2
ドキュメントの更新通知を受け取る方法
11.3
サポート・リソース
11.4
Trademarks
11.5
静電気放電に関する注意事項
11.6
用語集
12
Mechanical, Packaging, and Orderable Information
パッケージ・オプション
デバイスごとのパッケージ図は、PDF版データシートをご参照ください。
メカニカル・データ(パッケージ|ピン)
DDA|8
DRR|12
サーマルパッド・メカニカル・データ
DDA|8
PPTD058I
DRR|12
PPTD338C
発注情報
jajsev5e_oa
jajsev5e_pm
11.1.1
Development Support