ZHCSMU1F
October 2020 – January 2024
LMR43610-Q1
,
LMR43620-Q1
PRODUCTION DATA
1
1
特性
2
应用
3
说明
4
Device Comparison Table
5
Pin Configuration and 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
System Characteristics
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Enable, Start-Up, and Shutdown
7.3.2
External CLK SYNC (with MODE/SYNC)
7.3.2.1
Pulse-Dependent MODE/SYNC Pin Control
7.3.3
Adjustable Switching Frequency (with RT)
7.3.4
Power-Good Output Operation
7.3.5
Internal LDO, VCC, and VOUT/FB Input
7.3.6
Bootstrap Voltage and VBOOT-UVLO (BOOT Terminal)
7.3.7
Output Voltage Selection
7.3.8
Spread Spectrum
7.3.9
Soft Start and Recovery from Dropout
7.3.9.1
Recovery from Dropout
7.3.10
Current Limit and Short Circuit
7.3.11
Thermal Shutdown
7.3.12
Input Supply Current
7.4
Device Functional Modes
7.4.1
Shutdown Mode
7.4.2
Standby Mode
7.4.3
Active Mode
7.4.3.1
CCM Mode
7.4.3.2
Auto Mode – Light-Load Operation
7.4.3.2.1
Diode Emulation
7.4.3.2.2
Frequency Reduction
7.4.3.3
FPWM Mode – Light-Load Operation
7.4.3.4
Minimum On-Time (High Input Voltage) Operation
7.4.3.5
Dropout
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Choosing the Switching Frequency
8.2.2.2
Setting the Output Voltage
8.2.2.2.1
FB for Adjustable Output
8.2.2.3
Inductor Selection
8.2.2.4
Output Capacitor Selection
8.2.2.5
Input Capacitor Selection
8.2.2.6
CBOOT
8.2.2.7
VCC
8.2.2.8
CFF Selection
8.2.2.9
External UVLO
8.2.2.10
Maximum Ambient Temperature
8.2.3
Application Curves
8.3
Best Design Practices
8.4
Power Supply Recommendations
8.5
Layout
8.5.1
Layout Guidelines
8.5.1.1
Ground and Thermal Considerations
8.5.2
Layout Example
9
Device and Documentation Support
9.1
Device Support
9.1.1
第三方产品免责声明
9.1.2
Device Nomenclature
9.2
Documentation Support
9.2.1
Related Documentation
9.3
接收文档更新通知
9.4
支持资源
9.5
Trademarks
9.6
静电放电警告
9.7
术语表
10
Revision History
11
Mechanical, Packaging, and Orderable Information
11.1
Mechanical Data
封装选项
机械数据 (封装 | 引脚)
RPE|9
MPQF528A
散热焊盘机械数据 (封装 | 引脚)
RPE|9
QFND681A
订购信息
zhcsmu1f_oa
zhcsmu1f_pm
6
Specifications