JAJSN60B
december 2020 – may 2023
LMR43610
,
LMR43620
PRODUCTION DATA
1
1
特長
2
アプリケーション
3
概要
4
Revision History
5
Device Comparison Table
6
Pin Configuration and 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
System Characteristics
7.7
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Enable, Start-Up, and Shutdown
8.3.2
External CLK SYNC (with MODE/SYNC)
8.3.2.1
Pulse-Dependent MODE/SYNC Pin Control
8.3.3
Adjustable Switching Frequency (with RT)
8.3.4
Power-Good Output Operation
8.3.5
Internal LDO, VCC, and VOUT/FB Input
8.3.6
Bootstrap Voltage and VBOOT-UVLO (BOOT Terminal)
8.3.7
Output Voltage Selection
8.3.8
Soft Start and Recovery from Dropout
8.3.8.1
Recovery from Dropout
8.3.9
Current Limit and Short Circuit
8.3.10
Thermal Shutdown
8.3.11
Input Supply Current
8.4
Device Functional Modes
8.4.1
Shutdown Mode
8.4.2
Standby Mode
8.4.3
Active Mode
8.4.3.1
CCM Mode
8.4.3.2
Auto Mode – Light-Load Operation
8.4.3.2.1
Diode Emulation
8.4.3.2.2
Frequency Reduction
8.4.3.3
FPWM Mode – Light-Load Operation
8.4.3.4
Minimum On-Time (High Input Voltage) Operation
8.4.3.5
Dropout
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
Choosing the Switching Frequency
9.2.2.2
Setting the Output Voltage
9.2.2.2.1
FB for Adjustable Output
9.2.2.3
Inductor Selection
9.2.2.4
Output Capacitor Selection
9.2.2.5
Input Capacitor Selection
9.2.2.6
CBOOT
9.2.2.7
VCC
9.2.2.8
CFF Selection
9.2.2.8.1
External UVLO
9.2.2.9
Maximum Ambient Temperature
9.2.3
Application Curves
9.3
Best Design Practices
9.4
Power Supply Recommendations
9.5
Layout
9.5.1
Layout Guidelines
9.5.1.1
Ground and Thermal Considerations
9.5.2
Layout Example
10
Device and Documentation Support
10.1
Device Support
10.1.1
サード・パーティ製品に関する免責事項
10.1.2
Device Nomenclature
10.2
Documentation Support
10.2.1
Related Documentation
10.3
サポート・リソース
10.4
Trademarks
10.5
静電気放電に関する注意事項
10.6
用語集
11
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)
RPE|9
MPQF528A
サーマルパッド・メカニカル・データ
RPE|9
QFND682A
発注情報
jajsn60b_oa
8.3
Feature Description