Datasheet > SI3404-A-GM

SI3404-A-GM

更新时间： 2024-09-17 19:55:31

品牌	Logo	应用领域
芯科 - SILICON		/
页数	文件大小	规格书
25页	689K
描述
Power Supply Support Circuit,

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SI3404-A-GM 技术参数

是否Rohs认证：	符合	生命周期：	Active
Reach Compliance Code：	compliant	风险等级：	1.65
峰值回流温度（摄氏度）：	NOT SPECIFIED	处于峰值回流温度下的最长时间：	NOT SPECIFIED
Base Number Matches：	1

SI3404-A-GM 数据手册

Si3404 Data Sheet

Fully-Integrated IEEE 802.3 Type 1-Compliant POE PD Interface

and High-Efficiency Switching Regulator with Compact Footprint

KEY FEATURES

• Type 1 (PoE) power

The Si3404 integrates all power management and control functions required in a Pow-

er-over-Ethernet (PoE) powered device (PD) application. These devices convert the

high voltage supplied over the 10/100/1000BASE-T Ethernet connection to a regulated,

low-voltage output supply. The optimized architecture of this device minimizes the solu-

tion footprint and external BOM cost and enables the use of low-cost external compo-

nents while maintaining high performance. The Si3404 integrates a transient surge

suppressor. The switching power FET and all associated functions are also integrated.

The integrated, current mode controlled switching regulator supports isolated or non-

isolated flyback and buck converter topologies. The switching frequency for the regula-

tor is tunable with a simple external resistor value to help avoid unwanted harmonics

for better emissions control.

• IEEE 802.3at Type 1 compliance

• Current mode dc-dc converter

• Tunable switching frequency

• Transformer bias winding support

• Auxiliary adapter support

• Integrated hotswap FET and switching FET

• 120 V Absolute Max voltage performance

• Extended –40 to +85 °C temperature

• Compact ROHS-compliant 4 mm x 4 mm

QFN Package

This device fully supports the IEEE 802.3at specification for Type 1, single-event classi-

fication. Standard external resistors provide the proper IEEE 802.3 signatures for the

detection function and programming of the classification mode, and internal startup cir-

cuits ensure well-controlled soft-start initial operation of both the hotswap switch and

the voltage regulator.

APPLICATIONS

• Voice over IP telephones

• Wireless access points

• Security and surveillance IP cameras

• Point-of-sale terminals

• Internet appliances

The Si3404 is available in a low-profile, 20-pin, 4 x 4 mm QFN package.

• Network devices

silabs.com | Building a more connected world.

This information applies to a product under development. Its characteristics and specifications are subject to change without notice.

Preliminary Rev. 0.5

12 3 4 5 6 7...25

中文翻译

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与SI3404-A-GM相关器件

型号	品牌	获取价格	描述	数据表
SI3404HE3	MCC	获取价格	Tape: 3K/Reel, 120K/Ctn.;
Si34061-A-GM	SILICON	获取价格	Security and surveillance IP cameras
SI34062-A-GM	SILICON	获取价格	Power Supply Support Circuit,
SI3406-A-GM	SILICON	获取价格	Power Supply Support Circuit,
SI3406X	SILICON	获取价格	Security and surveillance IP cameras
SI3407	MCC	获取价格	Tape: 3K/Reel, 120K/Ctn.;
SI3407DV	VISHAY	获取价格	P-Channel 20-V (D-S) MOSFET
SI3407DV-T1-E3	VISHAY	获取价格	P-Channel 20-V (D-S) MOSFET
SI3407HE3	MCC	获取价格	Tape: 3K/Reel, 120K/Ctn.;
SI3407-TP	MCC	获取价格	Small Signal Field-Effect Transistor,

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