SNOSDG3
December 2024
LM74681
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
Switching Characteristics
5.7
Typical Characteristics
6
Parameter Measurement Information
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Input and Output Voltage
7.3.2
Charge Pump
7.3.3
Gate Driver
7.3.4
Enable
7.4
Device Functional Modes
7.4.1
Conduction Mode
7.4.1.1
Regulated Conduction Mode
7.4.1.2
Full Conduction Mode
7.4.2
Reverse Current Protection Mode
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Design Considerations
8.2.2.2
MOSFET Selection
8.2.2.3
Output capacitance
8.2.3
Application Curves
8.3
Powered Device for IEEE 802.3bt Class 5-8 (45W-90W) Systems
8.4
Power Supply Recommendations
8.4.1
Transient Protection
8.5
Layout
8.5.1
Layout Guidelines
8.5.2
Layout Example
9
Device and Documentation Support
9.1
Receiving Notification of Documentation Updates
9.2
Support Resources
9.3
Trademarks
9.4
Electrostatic Discharge Caution
9.5
Glossary
10
Revision History
11
Mechanical, Packaging, and Orderable Information
パッケージ・オプション
メカニカル・データ(パッケージ|ピン)
DRR|12
MPSS085A
サーマルパッド・メカニカル・データ
DRR|12
PPTD377
発注情報
snosdg3_oa
snosdg3_pm
2
Applications
PoE powered devices (48V)
Video surveillance: IP cameras
Polarity agnostic power inputs