Datasheet > SI3461-KIT

SI3461-KIT

更新时间： 2024-12-01 09:26:07

品牌	Logo	应用领域
芯科 - SILICON		/
页数	文件大小	规格书
24页	195K
描述
SINGLE-PORT IEEE 802.3AT POE/POE+ PSE INTERFACE

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中文翻译

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SI3461-KIT 数据手册

Si3461

SINGLE-PORT IEEE 802.3AT POE/POE+ PSE INTERFACE

Features

Pin Assignments

IEEE-compliant disconnect

Inrush current control

Short-circuit output fault

protection

LED status signal (detect,

power good, output fault)

 IEEE 802.3at compliant PSE

 Autonomous operation requires

no host processor interface

Si3461

 Complete reference design

available, including Si3461

controller and schematic:

 UNH Interoperability Test Lab

CLSMARK

DC1

STATUS

ISENSE

RST

report available

Low-cost BOM

Compact PCB footprint

Operates directly from a +50 V

isolated supply

Supports up to 30 W maximum

output power (Class 4)

 Extended operating range

VDD

GND

(–40 to +85 °C)

DC2

VSENSE

DETA

 11-Pin Quad Flat No-Lead

CLSMODE

(QFN) package

Tiny 3x3 mm PCB footprint;

Robust 3-point detection algorithm

eliminates false detection events

11-pin QFN (3x3 mm)

RoHS-compliant

Top View—Pads on bottom of package

Applications

 IEEE 802.3at endpoints and

 Set-top boxes

midspans

 FTTH media converters

 Environment A and B PSEs

 Embedded PSEs

 Cable modem and DSL

gateways

Description

The Si3461 is a single-port power management controller for IEEE

802.3at-compliant Power Sourcing Equipment (PSE). The Si3461 can

be powered from a 50 V input using a shunt regulator, or, to save

power, it can be powered from 50 V and 3.3 V power supplies. The

IEEE-required Powered Device (PD) detection feature uses a robust

3-point algorithm to avoid false detection events. The Si3461's

reference design kit also provides full IEEE-compliant classification

and PD disconnect. Intelligent protection circuitry includes input under-

voltage lockout (UVLO), classification-based current limiting, and

output short-circuit protection. The Si3461 is designed to operate

completely independently of host processor control. An LED status

signal is provided to indicate the port status, including detection,

power good, and output fault event information. The Si3461 is pin-

programmable to support four available power levels, endpoint and

mid-span applications, and auto-retry or restart after disconnect

functions. A comprehensive reference design kit is available (Si3461-

EVB), including a complete schematic and bill of materials.

Rev. 1.0 5/10

Si3461

12 3 4 5 6 7...24

中文翻译

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