Datasheet > MIC2358

MIC2358

更新时间： 2024-11-05 12:56:31

品牌	Logo	应用领域
麦瑞 - MICREL		控制器
页数	文件大小	规格书
29页	418K
描述
IEEE 802.3af Octal Power Sourcing Equipment Controller

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MIC2358 数据手册

MIC2358YLQ

IEEE 802.3af Octal Power Sourcing

Equipment Controller

General Description

Features

The MIC2358YLQYLQ octal network power controller is

designed for use in IEEE 802.3af-compliant power-

sourcing equipment (PSE). The device provides

standardized powered devices (PD) detection,

classification, current-limit, and monitoring of both DC

and AC maintain power signatures.

• Fully compliant with the IEEE 802.3af Power-over-

Ethernet standard

• Controls eight independent 48V-powered Ethernet

ports

• Powered port attributes:

– Up to 15.4W delivered per port

– Input over-voltage protection (OVP)

– Powered Device detection and classification

– Active current limit

– Powered Device AC and DC disconnect

supported

The MIC2358YLQYLQ can operate autonomously or be

controlled by software through a SMBus-compatible

interface. Its five address inputs support 32 unique

MIC2358YLQ addresses allowing control and monitoring

up to 256 powered Ethernet ports (32 MIC2358YLQ

devices) by an external management application.

For each port, the MIC2358YLQ uses external N-

Channel power FETs and current sense resistors to

deliver and monitor power. State machines have been

incorporated into this device for complete configuration,

fault reporting, and status on a per-port basis, including

port voltage and current.

• Operates autonomously or by SMBus control

• 5-bit programmable digital addressing allows control

of up to 256 Ethernet powered ports

• Hardware fault interrupt output

• Available in a Pb-free 64-pin LQFP package

The MIC2358YLQ also implements Micrel’s shared

power management and port prioritization which offers

more flexible allocation of available power among the

ports.

Applications

• IEEE 802.3af Compliant Enterprise Switches/Hubs

• IEEE 802.3af Compliant Endpoint and Midspan

Throughout this document the term 802.3af is

synonymous for IEEE Std 802.3-2005.

Power Sources

• PSE Power Injectors

• IP Phone Systems

• DTE Power Distribution

Datasheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

_________________________________________________________________________________________________________

Ordering Information

Part Number

Temperature Range

Pb-Free Package

MIC2358YLQYLQ

0 °C to +70 °C

64-Pin LQFP

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

M9999-070810

July 2010

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与MIC2358相关器件

型号	品牌	获取价格	描述	数据表
MIC2358_11	MICREL	获取价格	IEEE 802.3af Octal Power Sourcing Equipment Controller
MIC2358YLQ	MICREL	获取价格	IEEE 802.3af Octal Power Sourcing Equipment Controller
MIC2358YLQYLQ	MICREL	获取价格	IEEE 802.3af Octal Power Sourcing Equipment Controller
MIC23603	MICREL	获取价格	4MHz PWM 6A Buck Regulator
MIC23603YML	MICREL	获取价格	4MHz PWM 6A Buck Regulator
MIC23650	MICROCHIP	获取价格	The MIC23650 is a high-efficiency, low-voltage input, 6Apeak current synchronous step-down
MIC23656	MICROCHIP	获取价格	The MIC23656 is a high-efficiency, low-voltage input, 6Apeak current synchronous step-down
MIC24045	MICROCHIP	获取价格	I2C Programmable, 4.5V-19V Input, 5A Step-Down Converter
MIC24045-2ZYFL	MICROCHIP	获取价格	I2C Programmable, 4.5V-19V Input, 5A Step-Down Converter
MIC24045-2ZYFL-TR	MICROCHIP	获取价格	IC REG BUCK 0.64V 5A SYNC 20FQFN

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