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
1
特性
符合面向汽车应用的 AEC-Q100 标准
器件温度等级 1:–40°C 至 +125°C 环境工作温度范围
功能安全型
可帮助进行功能安全系统设计的文档
多功能同步降压直流/直流转换器
3V 至 36V 宽输入电压范围,可耐受高达 42V 的负载突降瞬变
1% 精度可调节
输出电压(1V 至 95% V
IN
)
150°C 最大结温
使用 RT 引脚或 SYNC 信号可在 200kHz 至 2.2MHz 范围内调节频率
通过优化
引脚排列设计
和相邻引脚短路测试间隙提高可靠性
进行了优化,可满足
低 EMI
要求
具有双输入路径的增强型
HotRod™
QFN 封装可减少开关节点振铃
展频
调频
轻负载时可选择 FPWM 或 PFM 模式
在整个负载范围内具有高效率
13.5V V
IN
、5V V
OUT
、6A、2.1MHz 时为 92.5%
空载输入电流:3.3V
OUT
时为 7µA(典型值)
关断静态电流:0.6µA(典型值)
6A 负载下的典型压降为 0.6V
具有用于提升效率的外部偏置选项
使用 LM63460-Q1 并借助
WEBENCH®
Power Designer
创建定制稳压器设计方案