ZHCS571I
August 2010 – April 2018
LM5119
PRODUCTION DATA.
1
特性
2
应用
3
说明
Device Images
简化应用电路
4
修订历史记录
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
Switching Characteristics
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
High Voltage Start-Up Regulator
7.3.2
UVLO
7.3.3
Enable 2
7.3.4
Oscillator and Sync Capability
7.3.5
Error Amplifiers and PWM Comparators
7.3.6
Ramp Generator
7.3.7
Current Limit
7.3.8
Hiccup Mode Current Limiting
7.3.9
Soft Start
7.3.10
HO and LO Output Drivers
7.3.11
Maximum Duty Cycle
7.3.12
Thermal Protection
7.4
Device Functional Modes
7.4.1
Diode Emulation
8
Application and Implementation
8.1
Application Information
8.1.1
Miscellaneous Functions
8.1.2
Interleaved Two-Phase Operation
8.1.3
Interleaved 4-Phase Operation
8.2
Typical Applications
8.2.1
Dual-output Design Example
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.2.1
Timing Resistor
8.2.1.2.2
Output Inductor
8.2.1.2.3
Current Sense Resistor
8.2.1.2.4
Ramp Resistor and Ramp Capacitor
8.2.1.2.5
Output Capacitors
8.2.1.2.6
Input Capacitors
8.2.1.2.7
VCC Capacitor
8.2.1.2.8
Bootstrap Capacitor
8.2.1.2.9
Soft-Start Capacitor
8.2.1.2.10
Restart Capacitor
8.2.1.2.11
Output Voltage Divider
8.2.1.2.12
UVLO Divider
8.2.1.2.12.1
MOSFET Selection
8.2.1.2.13
MOSFET Snubber
8.2.1.2.14
Error Amplifier Compensation
8.2.1.3
Application Curves
8.2.2
Two-Phase Design Example
8.2.2.1
Design Requirements
8.2.2.2
Detailed Design Procedure
8.2.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.1.1
Switching Jitter Root Causes and Solutions
10.2
Layout Example
11
器件和文档支持
11.1
接收文档更新通知
11.2
社区资源
11.3
商标
11.4
静电放电警告
11.5
术语表
12
机械、封装和可订购信息
封装选项
机械数据 (封装 | 引脚)
RTV|32
MPQF166B
散热焊盘机械数据 (封装 | 引脚)
RTV|32
QFND448B
订购信息
zhcs571i_oa
zhcs571i_pm
8.1
Application Information