Loading [MathJax]/jax/output/SVG/fonts/TeX/fontdata.js
Menu
Product
Email
PDF
Order now
LM34925 Integrated Secondary-Side Bias Regulator for Isolated DC-DC Converters
SNVS846G
June 2012 – November 2017
LM34925
PRODUCTION DATA.
CONTENTS
SEARCH
LM34925 Integrated Secondary-Side Bias Regulator for Isolated DC-DC Converters
1
Features
2
Applications
3
Description
4
Revision History
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
Switching Characteristics
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Control Overview
7.3.2
VCC Regulator
7.3.3
Regulation Comparator
7.3.4
Overvoltage Comparator
7.3.5
On-Time Generator
7.3.6
Current Limit
7.3.7
N-Channel Buck Switch and Driver
7.3.8
Synchronous Rectifier
7.3.9
Undervoltage Detector
7.3.10
Thermal Protection
7.3.11
Ripple Configuration
7.3.12
Soft Start
7.4
Device Functional Modes
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Application Circuit: 20-V to 95-V Input and 10-V, 100-mA Output Isolated Fly-Buck Converter
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.2.1
Transformer Turns Ratio
8.2.1.2.2
Total IOUT
8.2.1.2.3
RFB1, RFB2
8.2.1.2.4
Frequency Selection
8.2.1.2.5
Transformer Selection
8.2.1.2.6
Primary Output Capacitor
8.2.1.2.7
Secondary Output Capacitor
8.2.1.2.8
Type III Feedback Ripple Circuit
8.2.1.2.9
Secondary Diode
8.2.1.2.10
VCC and Bootstrap Capacitor
8.2.1.2.11
Input Capacitor
8.2.1.2.12
UVLO Resistors
8.2.1.2.13
VCC Diode
8.2.2
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Documentation Support
11.1.1
Related Documentation
11.2
Receiving Notification of Documentation Updates
11.3
Community Resources
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
Glossary
12
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
DDA|8
MPDS092F
NGU|8
MPDS407A
Thermal pad, mechanical data (Package|Pins)
Orderable Information
snvs846g_oa
snvs846g_pm
search
No matches found.
Full reading width
Full reading width
Comfortable reading width
Expanded reading width
Card for each section
Card with all content
千亿体育app官网登录(中国)官方网站IOS/安卓通用版/手机APP
|
米乐app下载官网（中国）|ios|Android/通用版APP最新版
|
米乐|米乐·M6（中国大陆）官方网站
|
千亿体育登陆地址
|
华体会体育（中国）HTH·官方网站
|
千赢qy国际_全站最新版千赢qy国际V6.2.14安卓/IOS下载
|
18新利网v1.2.5|中国官方网站
|
bob电竞真人（中国官网）安卓/ios苹果/电脑版【1.97.95版下载】
|
千亿体育app官方下载(中国)官方网站IOS/安卓/手机APP下载安装
|