ZHCSH36
September 2017
LM73605
,
LM73606
PRODUCTION DATA.
1
特性
2
应用
3
说明
4
修订历史记录
5
Pin Configuration and 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
System Characteristics
6.9
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Synchronous Step-Down Regulator
7.3.2
Auto Mode and FPWM Mode
7.3.3
Fixed-Frequency Peak Current-Mode Control
7.3.4
Adjustable Output Voltage
7.3.5
Enable and UVLO
7.3.6
Internal LDO, VCC_UVLO, and BIAS Input
7.3.7
Soft Start and Voltage Tracking
7.3.8
Adjustable Switching Frequency
7.3.9
Frequency Synchronization and Mode Setting
7.3.10
Internal Compensation and CFF
7.3.11
Bootstrap Capacitor and VBOOT-UVLO
7.3.12
Power-Good and Overvoltage Protection
7.3.13
Overcurrent and Short-Circuit Protection
7.3.14
Thermal Shutdown
7.4
Device Functional Modes
7.4.1
Shutdown Mode
7.4.2
Standby Mode
7.4.3
Active Mode
7.4.3.1
CCM Mode
7.4.3.2
DCM Mode
7.4.3.3
PFM Mode
7.4.3.4
Fault Protection Mode
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
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
Input Capacitors
8.2.2.5
Inductor Selection
8.2.2.6
Output Capacitor Selection
8.2.2.7
Feed-Forward Capacitor
8.2.2.8
Bootstrap Capacitors
8.2.2.9
VCC Capacitor
8.2.2.10
BIAS
8.2.2.11
Soft Start
8.2.2.12
Undervoltage Lockout Setpoint
8.2.2.13
PGOOD
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.1.1
Layout For EMI Reduction
10.1.2
Ground Plane
10.1.3
Optimize Thermal Performance
10.2
Layout Example
11
器件和文档支持
11.1
器件支持
11.1.1
Third-Party Products Disclaimer
11.1.2
使用 WEBENCH® 工具创建定制设计
11.2
相关文档
11.3
相关链接
11.4
接收文档更新通知
11.5
社区资源
11.6
商标
11.7
静电放电警告
11.8
Glossary
12
机械、封装和可订购信息
封装选项
机械数据 (封装 | 引脚)
RNP|30
MPQF448C
散热焊盘机械数据 (封装 | 引脚)
RNP|30
QFND665
订购信息
zhcsh36_oa
zhcsh36_pm