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参数资料
| 型号： | SI3480-A01-GM |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 1/14页 |
| 文件大小： | 0K |
| 描述： | IC CTLR 4/8-PORT POE 20-QFN |
| 标准包装： | 91 |
| 应用： | 以太网供电控制器 |
| 电流 - 电源： | 13mA |
| 电源电压： | 2.7 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-VFQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN（4x4） |
| 包装： | 管件 |
| 配用： | SI3480MS8-KIT-ND - KIT EVAL 8PORT SI3480/52/SI3500 |
Si3480
Si3480 P OWER M ANAGEMENT C O N T R O L L E R
Features
?
?
Enables use of a smaller power
supply for a 4 or 8 port PoE
system
Self-contained solution operates
without the need for a host for
unmanaged operation
?? No software required
?? No data isolation required
?
?
?
Pin programmable for overall
power supply capacity, port
power level, port priority, and
detection timing
LED indication of port status and
overall power consumption
20-pin Quad flat package
(4x4 mm)
?
Fully compliant with IEEE 802.3
?? 4x4 mm PCB footprint; RoHS
Ordering Information:
clause 33 for Power over Ethernet
compliant
including the 802.3at amendment ? Extended operating temperature
for higher power (30 W category 2
ports)
Description
range (–40 to +85 °C)
Pin Assignments
(Top View)
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.
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.
SDA
GND
VDD
RST
NC
1
2
3
4
5
15
14
13
12
11
PRIOCFG
ALTCFG
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. 1.0 7/10
Copyright ? 2010 by Silicon Laboratories
Si3480
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SI3480-A01-GMR | 功能描述:电源开关 IC - POE / LAN 8-port Power Manager RoHS:否 制造商:Fairchild Semiconductor 开关数量:Single 开关配置:SPST 开启电阻（最大值）:7.3 Ohms 串话: 带宽: 开启时间（最大值）:13 ns 关闭时间（最大值）:20 ns 切换电压（最大）: 工作电源电压:8 V to 26 V 最大工作温度:+ 125 C 安装风格:Through Hole 封装 / 箱体:TO-220F-6 |
| Si3480MS8-KIT | 功能描述:电源管理IC开发工具 8p Pwr Mngr Eval Kit Si3452/3PSE Prt Ctrl RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| SI3481DV | 制造商:VISHAY 制造商全称:Vishay Siliconix 功能描述:P-Channel 30-V (D-S) MOSFET |
| SI3481DV_06 | 制造商:VISHAY 制造商全称:Vishay Siliconix 功能描述:P-Channel 30-V (D-S) MOSFET |
| SI3481DV-T1-E3 | 功能描述:MOSFET 30V 5.3A 0.048Ohm RoHS:否 制造商:STMicroelectronics 晶体管极性:N-Channel 汲极/源极击穿电压:650 V 闸/源击穿电压:25 V 漏极连续电流:130 A 电阻汲极/源极 RDS（导通）:0.014 Ohms 配置:Single 最大工作温度: 安装风格:Through Hole 封装 / 箱体:Max247 封装:Tube |
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