MAX5952

更新时间： 2024-10-14 04:41:51

品牌	Logo	应用领域
美信 - MAXIM		控制器以太网
页数	文件大小	规格书
50页	614K
描述
High-Power, Quad, PSE Controller for Power-Over-Ethernet

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MAX5952 数据手册

19-0858; Rev 0; 7/07

High-Power, Quad, PSE Controller

for Power-Over-Ethernet

General Description

Features

The MAX5952 is a quad -48V power controller

designed for use in IEEE™ 802.3af-compliant/pre-IEEE

802.3at-compatible power-sourcing equipment (PSE).

This device provides powered device (PD) discovery,

classification, current limit, DC and AC load disconnect

detections in compliance with the IEEE 802.3af stan-

dard. The MAX5952 is pin compatible with MAX5945/

LTC4258/LTC4259A PSE controllers and provides addi-

tional features.

♦ IEEE 802.3af Compliant/Pre-IEEE 802.3at

Compatible

♦ Instantaneous Readout of Port Current Through

I C Interface

♦ High-Power Mode Enables Up to 45W Per Port

♦ High-Capacitance Detection for Legacy Devices

♦ Pin Compatible to MAX5945 and

The MAX5952 features high-power mode that provides

up to 45W per port. The MAX5952 provides instanta-

neous readout of each port current through the I²C inter-

face. The MAX5952 also provides high-capacitance

detection for legacy PDs.

LTC4258/LTC4259A

♦ Four Independent Power-Switch Controllers

♦ PD Detection and Classification

The device features an I²C-compatible, 3-wire serial inter-

face, and is fully software configurable and programma-

ble. The class-overcurrent detection function enables

system power management to detect if a PD draws more

than the allowable current. The MAX5952’s extensive pro-

grammability enhances system flexibility, enables field

diagnosis, and allows for uses in other applications.

♦ Load-Stability Safety Check During Detection

♦ Supports Both DC and AC Load Removal

Detections

♦ I C-Compatible, 3-Wire Serial Interface

♦ Current Foldback and Duty-Cycle-Controlled

Current Limit

The MAX5952 provides four operating modes to suit dif-

ferent system requirements. Auto mode allows the device

to operate automatically without any software supervision.

Semi-automatic mode automatically detects and classi-

fies a device connected to a port after initial software acti-

vation, but does not power up that port until instructed to

by software. Manual mode allows total software control of

the device and is useful for system diagnostics.

Shutdown mode terminates all activities and securely

turns off power to the ports.

♦ Open-Drain INT Signal

♦ Direct Fast Shutdown Control Capability

Ordering Information

PIN-

PACKAGE

PKG

CODE

PART

TEMP RANGE

The MAX5952 provides input undervoltage lockout

(UVLO), input undervoltage detection, a load-stability

safety check during detection, input overvoltage lock-

out, overtemperature detection, output voltage slew-

rate limit during startup, power-good status, and fault

status. The MAX5952’s programmability includes start-

up timeout, overcurrent timeout, and load-disconnect

detection timeout.

MAX5952AEAX+*

MAX5952AUAX+

-40°C to +85°C

0°C to +85°C

36 SSOP

A36-4

MAX5952CEAX+* -40°C to +85°C

MAX5952CUAX+* 0°C to +85°C

+Denotes a lead-free package.

*Future product—contact factory for availability.

The MAX5952 is available in a 36-pin SSOP package and

is rated for both extended (-40°C to +85°C) and upper

commercial (0°C to +85°C) temperature ranges.

Applications

Power-Sourcing Equipment (PSE)

Switches/Routers

Pin Configuration and Selector Guide appear at end of data

sheet.

Midspan Power Injectors

IEEE is a trademark of the Institute of Electrical and Electronics

Engineers, Inc.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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与MAX5952相关器件

型号	品牌	获取价格	描述	数据表
MAX5952_10	MAXIM	获取价格	High-Power, Quad, PSE Controller for Power-Over-Ethernet
MAX5952AEAX+	MAXIM	获取价格	High-Power, Quad, PSE Controller for Power-Over-Ethernet
MAX5952AEAX+T	MAXIM	获取价格	暂无描述
MAX5952AUAX+	MAXIM	获取价格	High-Power, Quad, PSE Controller for Power-Over-Ethernet
MAX5952AUAX+T	MAXIM	获取价格	Power Management Circuit, BICMOS, PDSO36
MAX5952CEAX+	MAXIM	获取价格	High-Power, Quad, PSE Controller for Power-Over-Ethernet
MAX5952CEAX+T	MAXIM	获取价格	Power Management Circuit, BICMOS, PDSO36
MAX5952CUAX+	MAXIM	获取价格	High-Power, Quad, PSE Controller for Power-Over-Ethernet
MAX5953A	MAXIM	获取价格	IEEE 802.3af PD Interface and PWM Controllers with Integrated Power MOSFETs
MAX5953AUTM	MAXIM	获取价格	IEEE 802.3af PD Interface and PWM Controllers with Integrated Power MOSFETs

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