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| 型号： | SI3402-A-GM |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 1/22页 |
| 文件大小： | 0K |
| 描述： | IC POE PD LOW EMI SW REG 20VQFN |
| 标准包装： | 490 |
| 类型： | 以太网供电开关（PoE） |
| 应用： | IP 电话，LAN 网络供电，网络路由器和交换机 |
| 内部开关： | 是 |
| 电流限制： | 470mA |
| 电源电压： | 2.8 V ~ 57 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-VQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN（5x5） |
| 包装： | 管件 |
Si3402
F U L LY - I N T E G R A T E D 8 0 2 . 3 - C O M P LI A N T P O E P D I N T E R F A C E
AND L OW -EMI S WITCHING R EGULATOR
Features
?
?
IEEE 802.3 standard-compliant
solution, including pre-standard
(legacy) PoE support
Highly-integrated IC enables
compact solution footprints
?? Minimal external components
?? Integrated diode bridges and
transient surge suppressor
?? Integrated switching regulator
controller with on-chip power
FET
?? Integrated dual current-limited
?
?
?
Incorporates switcher EMI-
reduction techniques.
Supports non-isolated and
isolated switching topologies
Comprehensive protection
circuitry
?? Transient overvoltage
protection
?? Undervoltage lockout
?? Early power-loss indicator
?? Thermal shutdown protection
?? Foldback current limiting
Ordering Information:
See page 18.
hotswap switch
?
Low-profile 5 x 5 mm 20-pin QFN
Pin Assignments
?
Programmable classification
circuit
?
RoHS-compliant
5 x 5 mm QFN
(Top View)
Applications
?
Voice over IP telephones and
?
Point-of-sale terminals
20
19
18
17
16
15
adapters
?
Internet appliances
?
Wireless access points
?
Network devices
EROUT
1
14
CT1
?
Security cameras
?
High power applications
SSFT
VDD
2
3
VNEG
(PAD)
13 CT2
12 VPOSF
Description
ISOSSFT 4
11
SP1
The Si3402 integrates all power management and control functions required
5
6
7
8
9
10
in a Power-over-Ethernet (PoE) powered device (PD) application. The
Si3402 converts the high voltage supplied over the 10/100/1000BASE-T
Ethernet connection into a regulated, low-voltage output supply. The
optimized architecture of the Si3402 minimizes the solution footprint,
reduces external BOM cost, and enables the use of low-cost external
components while maintaining high performance. The Si3402 integrates the
required diode bridges and transient surge suppressor, thus enabling direct
connection of the IC to the Ethernet RJ-45 connector. The switching power
FET and all associated functions are also integrated. The integrated
switching regulator supports isolated (flyback) and non-isolated (buck)
converter topologies. The Si3402 supports IEEE Std 802.3? 2008 including
the IEEE Std 802.3at-2009 amendment for the case of single-event
classification. Standard external resistors connected to the Si3402 provide
the proper 802.3 signatures for the detection function and programming of
the classification mode. Startup circuits ensure well-controlled initial
operation of both the hotswap switch and the voltage regulator. The Si3402
is available in a low-profile, 20-pin, 5 x 5 mm QFN package. While the
Si3402 is designed for applications up to 10 W, it can be used for higher
power applications (up to approximately 15 W). See also “AN313: Using the
Si3402 in High Power Applications” for more information.
Rev. 1.31 8/13
Copyright ? 2013 by Silicon Laboratories
Si3402
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SI3402-A-GMR | 功能描述:热插拔功率分布 PoE Powered Device RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| SI3402B-EVB | 功能描述:Si3402-B - Special Purpose DC/DC, Power Over Ethernet 1, Non-Isolated Outputs Evaluation Board 制造商:silicon labs 系列:- 零件状态:新产品 主要用途:特殊用途 DC/DC，以太网供电（POE） 输出和类型:1，非隔离 功率 - 输出:- 电压 - 输出:5V 电流 - 输出:- 电压 - 输入:44 V ~ 57 V 稳压器拓扑:降压 频率 - 开关:350kHz 板类型:完全填充 所含物品:板 使用的 IC/零件:Si3402-B 标准包装:1 |
| SI3402-B-GM | 功能描述:IC POE PD LOW EMI SW REG 20VQFN 制造商:silicon labs 系列:- 包装:托盘 零件状态:在售 类型:控制器（PD），DC/DC 通道数:1 功率 - 最大值:17W 内部开关:是 辅助作用:无 标准:802.3at（PoE+），802.3af（PoE） 电压 - 电源:2.8 V ~ 57 V 电流 - 电源:2mA 工作温度:-40°C ~ 85°C 封装/外壳:20-VQFN 裸露焊盘 供应商器件封装:20-QFN（5x5） 标准包装:490 |
| SI3402-B-GMR | 功能描述:IC POE PD LOW EMI SW REG 20VQFN 制造商:silicon labs 系列:- 包装:剪切带（CT） 零件状态:在售 类型:控制器（PD），DC/DC 通道数:1 功率 - 最大值:17W 内部开关:是 辅助作用:无 标准:802.3at（PoE+），802.3af（PoE） 电压 - 电源:2.8 V ~ 57 V 电流 - 电源:2mA 工作温度:-40°C ~ 85°C 封装/外壳:20-VQFN 裸露焊盘 供应商器件封装:20-QFN（5x5） 标准包装:1 |
| SI3402BISO-EVB | 功能描述:Si3402-B - Special Purpose DC/DC, Power Over Ethernet 1, Isolated Outputs Evaluation Board 制造商:silicon labs 系列:- 零件状态:新产品 主要用途:特殊用途 DC/DC，以太网供电（POE） 输出和类型:1，隔离 功率 - 输出:- 电压 - 输出:5V 电流 - 输出:- 电压 - 输入:44 V ~ 57 V 稳压器拓扑:回扫 频率 - 开关:350kHz 板类型:完全填充 所含物品:板 使用的 IC/零件:Si3402-B 标准包装:1 |
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