ZHCSGT2C
November 2016 – August 2021
LMS3635-Q1
,
LMS3655-Q1
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
Device Comparison Tables
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
Thermal Information (for Device Mounted on PCB)
7.6
Electrical Characteristics
7.7
System Characteristics
7.8
Timing Requirements
7.9
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
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
Custom Design With WEBENCH® Tools
9.2.1.2.2
External Components Selection
9.2.1.2.2.1
Input Capacitors
9.2.1.2.2.2
Output Inductors and Capacitors
9.2.1.2.2.2.1
Inductor Selection
9.2.1.2.2.2.2
Output Capacitor Selection
9.2.1.2.3
Setting the Output Voltage
9.2.1.2.4
FB for Adjustable Output
9.2.1.2.5
VCC
9.2.1.2.6
BIAS
9.2.1.2.7
CBOOT
9.2.1.2.8
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
6-V Adjustable Output
9.2.4.1
Design Requirements
9.2.4.2
Detailed Design Procedure
9.2.4.3
Application Curves
9.3
Do's and Don't's
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
第三方产品免责声明
12.1.2
Development Support
12.1.2.1
Custom Design With WEBENCH® Tools
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
封装选项
机械数据 (封装 | 引脚)
RNL|22
MPQF443E
散热焊盘机械数据 (封装 | 引脚)
RNL|22
QFND674
订购信息
zhcsgt2c_oa
zhcsgt2c_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 的工作环境温度范围
器件 HBM 分类等级 2
器件 CDM 分类等级 C6
在将 12V 转换为 5V 时具有 96% 的峰值效率
低 EMI 和超低的开关节点振铃
400kHz (±10%) 固定开关频率
具有 –40°C 至 +150°C 的结温范围
外部频率同步
具有内部滤波器和 3ms 释放计时器的
RESET
输出
可提高效率的自动轻负载模式
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
25°C 时在 3.5A 负载下具有 0.35V 压降(典型值)
18µA I
Q_VIN
:在 3.3 V
OUT
且无负载情况下的静态电流(典型值)
输出电压:5V、3.3V 和 ADJ(1V 至 20V)
±1.5% 基准电压容差
使用 LMS3655-Q1 并借助
WEBENCH®
Power Designer
创建定制设计方案