ZHCSN85
January 2021
LM5156
,
LM51561
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
Description (continued)
6
Device Comparison Table
7
Pin Configuration and Functions
8
Specifications
8.1
Absolute Maximum Ratings
8.2
ESD Ratings
8.3
Recommended Operating Conditions
8.4
Thermal Information
8.5
Electrical Characteristics
8.6
Typical Characteristics
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Line Undervoltage Lockout (UVLO/SYNC/EN Pin)
9.3.2
High Voltage VCC Regulator (BIAS, VCC Pin)
9.3.3
Soft Start (SS Pin)
9.3.4
Switching Frequency (RT Pin)
9.3.5
Dual Random Spread Spectrum (DRSS)
9.3.6
Clock Synchronization (UVLO/SYNC/EN Pin)
9.3.7
Current Sense and Slope Compensation (CS Pin)
9.3.8
Current Limit and Minimum On-time (CS Pin)
9.3.9
Feedback and Error Amplifier (FB, COMP Pin)
9.3.10
Power-Good Indicator (PGOOD pin)
9.3.11
Hiccup Mode Overload Protection (LM51561 Only)
9.3.12
Maximum Duty Cycle Limit and Minimum Input Supply Voltage
9.3.13
MOSFET Driver (GATE Pin)
9.3.14
Overvoltage Protection (OVP)
9.3.15
Thermal Shutdown (TSD)
9.4
Device Functional Modes
9.4.1
Shutdown Mode
9.4.2
Standby Mode
9.4.3
Run Mode
10
Application and Implementation
10.1
Application Information
10.2
Typical Application
10.2.1
Design Requirements
10.2.2
Detailed Design Procedure
10.2.2.1
Custom Design With WEBENCH® Tools
10.2.2.2
Recommended Components
10.2.2.3
Inductor Selection (LM)
10.2.2.4
Output Capacitor (COUT)
10.2.2.5
Input Capacitor
10.2.2.6
MOSFET Selection
10.2.2.7
Diode Selection
10.2.2.8
Efficiency Estimation
10.2.3
Application Curve
10.3
System Examples
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.2
Layout Examples
13
Device and Documentation Support
13.1
Device Support
13.1.1
第三方米6体育平台手机版_好二三四免责声明
13.1.2
Development Support
13.1.2.1
Custom Design With WEBENCH® Tools
13.2
Documentation Support
13.2.1
Related Documentation
13.3
接收文档更新通知
13.4
支持资源
13.5
Trademarks
13.6
静电放电警告
13.7
术语表
14
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
DSS|12
MPDS336C
散热焊盘机械数据 (封装 | 引脚)
DSS|12
QFND398B
订购信息
zhcsn85_oa
zhcsn85_pm
13.1
Device Support
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