ZHCSRT4
august 2023
LV5144
PRODUCTION DATA
1
1
特性
2
应用
3
说明
4
Revision History
5
说明(续)
6
Pin Configuration and Functions
6.1
Wettable Flanks
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Input Range (VIN)
8.3.2
Output Voltage Setpoint and Accuracy (FB)
8.3.3
High-Voltage Bias Supply Regulator (VCC)
8.3.4
Precision Enable (EN/UVLO)
8.3.5
Power Good Monitor (PGOOD)
8.3.6
Switching Frequency (RT, SYNCIN)
8.3.6.1
Frequency Adjust
8.3.6.2
Clock Synchronization
8.3.7
Configurable Soft Start (SS/TRK)
8.3.7.1
Tracking
8.3.8
Voltage-Mode Control (COMP)
8.3.9
Gate Drivers (LO, HO)
8.3.10
Current Sensing and Overcurrent Protection (ILIM)
8.3.11
OCP Duty Cycle Limiter
8.4
Device Functional Modes
8.4.1
Shutdown Mode
8.4.2
Standby Mode
8.4.3
Active Mode
8.4.4
Diode Emulation Mode
8.4.5
Thermal Shutdown
9
Application and Implementation
9.1
Application Information
9.1.1
Design and Implementation
9.1.2
Power Train Components
9.1.2.1
Inductor
9.1.2.2
Output Capacitors
9.1.2.3
Input Capacitors
9.1.2.4
Power MOSFETs
9.1.3
Control Loop Compensation
9.1.4
EMI Filter Design
9.2
Typical Applications
9.2.1
Design 1 – 12-A High-Efficiency Synchronous Buck DC/DC Regulator
9.2.1.1
Design Requirements
9.2.1.2
Detailed Design Procedure
9.2.1.3
Application Curves
9.2.2
Design 2 – High Density, 12-V, 8-A Rail From 48-V Telecom Power
9.2.2.1
Design Requirements
9.2.2.2
Detailed Design Procedure
9.2.2.3
Application Curves
9.3
Power Supply Recommendations
9.4
Layout
9.4.1
Layout Guidelines
9.4.1.1
Power Stage Layout
9.4.1.2
Gate Drive Layout
9.4.1.3
PWM Controller Layout
9.4.1.4
Thermal Design and Layout
9.4.1.5
Ground Plane Design
9.4.2
Layout Example
10
Device and Documentation Support
10.1
Device Support
10.1.1
第三方米6体育平台手机版_好二三四免责声明
10.1.2
Development Support
10.2
Documentation Support
10.2.1
Related Documentation
10.2.1.1
PCB Layout Resources
10.2.1.2
Thermal Design Resources
10.3
接收文档更新通知
10.4
支持资源
10.5
Trademarks
10.6
静电放电警告
10.7
术语表
11
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
RGY|20
MPQF116H
散热焊盘机械数据 (封装 | 引脚)
RGY|20
QFND755
订购信息
zhcsrt4_oa
7.2
ESD Ratings
VALUE
UNIT
V
(ESD)
Electrostatic discharge
Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001
(1)
±2000
V
Charged-device model (CDM), per ANSI/ESDA/JEDEC JS-002
(2)
±750
(1)
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2)
JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
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