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SI3480-A01-GMR

更新时间： 2024-09-30 21:12:23
品牌 Logo 应用领域
芯科 - SILICON /
页数 文件大小 规格书
14页 137K
描述
Power Supply Support Circuit, Fixed, 1 Channel, 4 X 4 MM, ROHS COMPLIANT, MO-220VGGD, QFN-20

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SI3480-A01-GMR 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：QFN包装说明：4 X 4 MM, ROHS COMPLIANT, MO-220VGGD, QFN-20
针数：20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.84可调阈值：NO
模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUITJESD-30 代码：S-XQCC-N20
长度：4 mm信道数量：1
功能数量：1端子数量：20
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：UNSPECIFIED封装代码：HVQCCN
封装等效代码：LCC20,.16SQ,20封装形状：SQUARE
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：NOT SPECIFIED
电源：3/3.3 V认证状态：Not Qualified
座面最大高度：1 mm子类别：Power Management Circuits
最大供电电流 (Isup)：13 mA最大供电电压 (Vsup)：3.6 V
最小供电电压 (Vsup)：2.7 V标称供电电压 (Vsup)：3 V
表面贴装：YES温度等级：INDUSTRIAL
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：4 mmBase Number Matches：1

SI3480-A01-GMR 数据手册

 浏览型号SI3480-A01-GMR的Datasheet PDF文件第2页浏览型号SI3480-A01-GMR的Datasheet PDF文件第3页浏览型号SI3480-A01-GMR的Datasheet PDF文件第4页浏览型号SI3480-A01-GMR的Datasheet PDF文件第5页浏览型号SI3480-A01-GMR的Datasheet PDF文件第6页浏览型号SI3480-A01-GMR的Datasheet PDF文件第7页 
Si3480  
Si3480 POWER MANAGEMENT CONTROLLER  
Features  
Enables use of a smaller power Pin programmable for overall  
supply for a 4 or 8 port PoE  
system  
power supply capacity, port  
power level, port priority, and  
detection timing  
Self-contained solution operates  
without the need for a host for  
unmanaged operation  
LED indication of port status and  
overall power consumption  
No software required  
20-pin Quad flat package  
(4x4 mm)  
4x4 mm PCB footprint; RoHS  
compliant  
No data isolation required  
Fully compliant with IEEE 802.3  
clause 33 for Power over Ethernet  
including the 802.3at amendment  
for higher power (30 W category 2  
ports)  
Ordering Information:  
See Ordering Guide on page 9.  
Extended operating temperature  
range (–40 to +85 °C)  
Pin Assignments  
(Top View)  
Description  
The Si3480 is a power manager intended for use with the Si3452 Power  
over Ethernet (PoE) controller. The Si3480 enables the use of a smaller,  
lower cost, and more efficiently-utilized power supply in an unmanaged  
PoE Power Sourcing Equipment (PSE) system.  
SDA  
GND  
VDD  
RST  
NC  
1
2
3
4
5
15 PRIOCFG  
14 ALTCFG  
The Si3452 is capable of delivering over 30 W per port, which means that,  
in a typical 8-port system, a 240 W power supply would have to be used  
to avoid overload. Typically, not all ports are used at full power; so, a  
smaller power supply in the range of 30 to 150 W can be used along with  
the Si3480 power management controller.  
13  
12  
11  
LED8  
LED7  
LED6  
The Si3480 power management controller is pin programmed. The pins  
are used to set the power supply capacity, the number of low power  
(category 1, 15.4 W), and high power (category 2, 30 W) ports, the port  
priority, and the detection timing (Alternative A or Alternative B). The  
Si3480 uses the real time overload and current monitoring capability of  
the Si3452 to manage power for up to eight ports. Power management is  
based on actual consumption rather than mere classification in order to  
supply power to the greatest number of ports.  
The Si3480 also provides LED drive to indicate port status and drive an  
LED bar graph display to indicate the power supply capacity in use. If a  
port is denied power due to power supply capacity limitations, the LED  
indicators provide a simple and intuitive indication, helping a user  
recognize and correct the overload situation by rebalancing loads or  
adding mid-span power injectors to ports that would not otherwise be  
powered. In case of a port overload, the port is easily re-enabled by  
disconnecting the Powered Device (PD) and then reconnecting the PD  
after correcting the overload situation.  
Rev. 1.1 1/15  
Copyright © 2015 by Silicon Laboratories  
Si3480  
1234567...14

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