ZHCSO42B
December 2015 – July 2021
LM53625-Q1
,
LM53635-Q1
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
Device Comparison
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
Timing Characteristics
7.8
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.2.1
Control Scheme
8.3
Feature Description
8.3.1
RESET Flag Output
8.3.2
Enable and Start-Up
8.3.3
Soft-Start Function
8.3.4
Current Limit
8.3.5
Hiccup Mode
8.3.6
Synchronizing Input
8.3.7
Undervoltage Lockout (UVLO) and Thermal Shutdown (TSD)
8.3.8
Input Supply Current
8.4
Device Functional Modes
8.4.1
AUTO Mode
8.4.2
FPWM Mode
8.4.3
Dropout
8.4.4
Input Voltage Frequency Foldback
8.5
Spread-Spectrum Operation
9
Application and Implementation
9.1
Application Information
9.2
Typical Applications
9.2.1
General Application
9.2.1.1
Design Requirements
9.2.1.2
Detailed Design Procedure
9.2.1.2.1
External Components Selection
9.2.1.2.1.1
Input Capacitors
9.2.1.2.1.1.1
Input Capacitor Selection
9.2.1.2.1.2
Output Inductors and Capacitors Selection
9.2.1.2.1.2.1
Inductor Selection
9.2.1.2.1.2.2
Output Capacitor Selection
9.2.1.2.2
Setting the Output Voltage
9.2.1.2.2.1
FB for Adjustable Versions
9.2.1.2.3
VCC
9.2.1.2.4
BIAS
9.2.1.2.5
CBOOT
9.2.1.2.6
Maximum Ambient Temperature
9.2.1.3
Application Curves
9.2.2
Fixed 5-V Output for USB-Type Applications
9.2.2.1
Design Requirements
9.2.2.2
Detailed Design Procedure
9.2.2.3
Application Curves
9.2.3
Fixed 3.3-V Output
9.2.3.1
Design Requirements
9.2.3.2
Detailed Design Procedure
9.2.3.3
Application Curves
9.2.4
Adjustable Output
9.2.4.1
Design Requirements
9.2.4.2
Detailed Design Procedure
9.2.4.3
Application Curves
9.3
What to Do and What Not to Do
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Device Support
12.1.1
第三方米6体育平台手机版_好二三四免责声明
12.2
Documentation Support
12.2.1
Related Documentation
12.3
接收文档更新通知
12.4
支持资源
12.5
Trademarks
12.6
Electrostatic Discharge Caution
12.7
术语表
13
Mechanical, Packaging, and Orderable Information
1
特性
符合 AEC-Q100 汽车标准:
器件温度等级 1:–40°C 至 +125°C 环境工作温度范围
器件 HBM 分类等级 2
器件 CDM 分类等级 C6
–40°C 至 +150°C 结温范围
空载条件下具有 15µA 静态电流(典型值)和 3.3V 输出
具有或不具有可湿性侧面以及 0.6mm V
IN
间距的 5.0mm × 4.0mm VQFN 封装
低 EMI 和开关噪声
展频选项
外部频率同步
具有内部滤波器和 3ms 释放计时器的
RESET
输出
引脚可选强制 PWM 模式
内置补偿、软启动、电流限制、热关断和 UVLO
在 3.5A、105°C T
A
条件下具有 0.6V 压降
±1% 输出电压容差(T
J
为 –40°C 至 125°C)
提供 5V、3.3V 固定输出或可调输出
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