ZHCSHC8
December 2017
LM25576-Q1
PRODUCTION DATA.
1
特性
2
应用
3
说明
Device Images
简化应用电路原理图
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
Electrical Characteristics
6.5
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
7.4
Device Functional Modes
7.4.1
Shutdown and Stand-by Mode
7.4.2
Oscillator and Sync Capability
7.4.3
Error Amplifier and PWM Comparator
7.4.4
RAMP Generator
7.4.5
Maximum Duty Cycle and Input Drop-Out Voltage
7.4.6
Current Limit
7.4.7
Soft-Start
7.4.8
Boost Pin
7.4.9
Thermal Protection
8
Application and Implementation
8.1
Application Information
8.1.1
External Components
8.1.2
R3 (RT)
8.1.3
L1
8.1.4
C3 (CRAMP)
8.1.5
C9, C10
8.1.6
D1
8.1.7
C1, C2
8.1.8
C8
8.1.9
C7
8.1.10
C4
8.1.11
R5, R6
8.1.12
R1, R2, C12
8.1.13
R7, C11
8.1.14
R4, C5, C6
8.1.15
Bias Power Dissipation Reduction
8.2
Typical Application
8.2.1
Typical Schematic for High Frequency (1 MHz) Application
8.2.2
Typical Schematic for Buck and Boost (Inverting) Application
9
Layout
9.1
Layout Guidelines
9.1.1
PCB Layout and Thermal Considerations
9.2
Layout Example
10
器件和文档支持
10.1
器件支持
10.1.1
开发支持
10.1.1.1
使用 WEBENCH® 工具创建定制设计
10.2
接收文档更新通知
10.3
社区资源
10.4
商标
10.5
静电放电警告
10.6
Glossary
11
机械、封装和可订购信息
封装选项
机械数据 (封装 | 引脚)
PWP|20
MHTS001G
散热焊盘机械数据 (封装 | 引脚)
PWP|20
PPTD289
订购信息
zhcshc8_oa
zhcshc8_pm
Device Images
简化应用电路原理图