ZHCSF94E
February 2018 – July 2020
LMR23625
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 Requirements
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 Output Voltage
7.3.3
Enable/Sync
7.3.4
VCC, UVLO
7.3.5
Minimum ON-time, Minimum OFF-time and Frequency Foldback at Drop-out Conditions
7.3.6
Internal Compensation and CFF
7.3.7
Bootstrap Voltage (BOOT)
7.3.8
Overcurrent and Short-Circuit Protection
7.3.9
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 (PFM Option)
7.4.5
Light Load Operation (FPWM Option)
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
Feed-forward 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 Set-Point
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
10.3
Compact Layout for EMI Reduction
10.4
Ground Plane and Thermal Considerations
10.5
Feedback Resistors
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
Receiving Notification of Documentation Updates
11.3
Support Resources
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
Glossary
12
Mechanical, Packaging, and Orderable Information
封装选项
请参考 PDF 数据表获取器件具体的封装图。
机械数据 (封装 | 引脚)
DRR|12
DDA|8
散热焊盘机械数据 (封装 | 引脚)
DDA|8
PPTD058I
DRR|12
PPTD338C
订购信息
zhcsf94e_oa
zhcsf94e_pm
1
特性
4V 至 36V 的输入电压范围
2.5A 持续输出电流
集成同步整流
电流模式控制
最小导通时间:60ns
带 PFM 和强制 PWM 模式选项的 2.1MHz 开关频率 (HSOIC)
仅带强制 PWM 模式的 2.1MHz 开关频率 (WSON)
与外部时钟频率同步
内置补偿功能,便于使用
无负载条件下的静态电流为 75µA
软启动至预偏置负载
支持高占空比运行模式
精密使能输入
具有断续模式的输出短路保护
过热保护
带
PowerPAD™
的 8 引脚 HSOIC 封装
带
PowerPAD™
的 12 引脚 WSON 可湿性侧面封装
使用
LMZM33603
模块缩短产品上市时间
使用 LMR23625 并借助
WEBENCH®
电源设计器
创建定制设计方案