ZHCSHR3B
June 2017 – August 2020
LMR23615
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
Pin Configuration and Functions
Pin 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
Timing Characteristics
6.7
Switching Characteristics
6.8
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Fixed-Frequency, Peak-Current-Mode Control
7.3.2
Adjustable Frequency
7.3.3
Adjustable Output Voltage
7.3.4
Enable/Sync
7.3.5
VCC, UVLO
7.3.6
Minimum ON-Time, Minimum-OFF Time, and Frequency Foldback at Dropout Conditions
7.3.7
Internal Compensation and CFF
7.3.8
Bootstrap Voltage (BOOT)
7.3.9
Overcurrent and Short-Circuit Protection
7.3.10
Thermal Shutdown
7.4
Device Functional Modes
7.4.1
Shutdown Mode
7.4.2
Active Mode
7.4.3
CCM Mode
7.4.4
Light Load Operation
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Custom Design With WEBENCH® Tools
8.2.2.2
Output Voltage Setpoint
8.2.2.3
Switching Frequency
8.2.2.4
Inductor Selection
8.2.2.5
Output Capacitor Selection
8.2.2.6
Feedforward Capacitor
8.2.2.7
Input Capacitor Selection
8.2.2.8
Bootstrap Capacitor Selection
8.2.2.9
VCC Capacitor Selection
8.2.2.10
Undervoltage Lockout Setpoint
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.1.1
Compact Layout for EMI Reduction
10.1.2
Ground Plane and Thermal Considerations
10.1.3
Feedback Resistors
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.1.1
Development Support
11.1.1.1
Custom Design With WEBENCH® Tools
11.2
接收文档更新通知
11.3
支持资源
11.4
Trademarks
11.5
静电放电警告
11.6
术语表
12
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
DRR|12
MPSS085A
散热焊盘机械数据 (封装 | 引脚)
DRR|12
PPTD338C
订购信息
zhcshr3b_oa
zhcshr3b_pm
1
特性
4V 至 36V 的输入电压范围
1.5A 持续输出电流
集成同步整流
具有内部补偿的电流模式控制
最短导通时间:60ns
可调开关频率
轻负载下采用 PFM 模式
与外部时钟频率同步
75µA 静态电流
软启动至预偏置负载
支持高占空比运行模式
具有断续模式的输出短路保护
过热保护
带
PowerPAD™
的 12 引脚 WSON 可湿性侧面封装
使用
LMZM22602
模块缩短产品上市时间
使用 LMR23615 并借助
WEBENCH®
Power Designer
创建定制设计方案