ZHCSLU2B
December 2021 – October 2023
LM63460-Q1
PRODUCTION DATA
1
1
特性
2
应用
3
说明
4
Revision History
5
Device Comparison Table
6
Pin Configuration and Functions
6.1
Wettable Flanks
6.2
Pinout Design for Clearance and FMEA
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
Timing Characteristics
7.7
Systems Characteristics
7.8
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Input Voltage Range (VIN1, VIN2)
8.3.2
Output Voltage Setpoint (FB)
8.3.3
Precision Enable and Input Voltage UVLO (EN/SYNC)
8.3.4
Frequency Synchronization (EN/SYNC)
8.3.5
Clock Locking
8.3.6
Adjustable Switching Frequency (RT)
8.3.7
Power-Good Monitor (PGOOD)
8.3.8
Bias Supply Regulator (VCC, BIAS)
8.3.9
Bootstrap Voltage and UVLO (CBOOT)
8.3.10
Spread Spectrum
8.3.11
Soft Start and Recovery From Dropout
8.3.12
Overcurrent and Short-Circuit Protection
8.3.13
Thermal Shutdown
8.3.14
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 Foldback
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 Applications
9.2.1
Design 1 – Automotive Synchronous Buck Regulator at 2.1 MHz
9.2.1.1
Design Requirements
9.2.1.2
Detailed Design Procedure
9.2.1.2.1
Custom Design With WEBENCH® Tools
9.2.1.2.2
Setting the Output Voltage
9.2.1.2.3
Choosing the Switching Frequency
9.2.1.2.4
Inductor Selection
9.2.1.2.5
Output Capacitor Selection
9.2.1.2.6
Input Capacitor Selection
9.2.1.2.7
Bootstrap Capacitor
9.2.1.2.8
VCC Capacitor
9.2.1.2.9
BIAS Power Connection
9.2.1.2.10
Feedforward Network
9.2.1.2.11
Input Voltage UVLO
9.2.1.3
Application Curves
9.2.2
Design 2 – Automotive Synchronous Buck Regulator at 400 kHz
9.2.2.1
Design Requirements
9.2.2.2
Detailed Design Procedure
9.2.2.3
Application Curves
9.3
Power Supply Recommendations
9.4
Layout
9.4.1
Layout Guidelines
9.4.1.1
Thermal Design and Layout
9.4.2
Layout Example
10
Device and Documentation Support
10.1
Device Support
10.1.1
第三方产品免责声明
10.1.2
Development Support
10.1.2.1
Custom Design With WEBENCH® Tools
10.2
Documentation Support
10.2.1
Related Documentation
10.3
接收文档更新通知
10.4
支持资源
10.5
Trademarks
10.6
静电放电警告
10.7
术语表
11
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
RYF|22
MPQF610A
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcslu2b_oa
zhcslu2b_pm
7
Specifications