Datasheet > MAX5980A

MAX5980A

更新时间： 2023-12-20 18:46:06

品牌	Logo	应用领域
亚德诺 - ADI		以太网控制器
页数	文件大小	规格书
50页	2144K
描述
适合以太网供电应用的四通道IEEE 802.3at/af PSE控制器

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中文翻译

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MAX5980A 数据手册

MAX5980A

Quad, IEEE 802.3at/af PSE Controller

for Power-over-Ethernet

General Description

The MAX5980A is a quad, power-sourcing equipment

(PSE) power controller designed for use in IEEE

Beneﬁts and Features

● IEEE 802.3at/af Compliance Enables PD Discovery,

Classification, Current Limit, and Load-Disconnect

Detection

802.3at/af-compliant PSE. This device provides powered

device (PD) discovery, classification, current limit, and

load disconnect detection. The device supports both fully

automatic operation and software programmability. The

device also supports new 2-Event classification and Class

5 for detection and classification of high-power PDs. The

device supports single-supply operation, provides up to

70W to each port (Class 5 enabled), and still provides

high-capacitance detection for legacy PDs.

• Provides Interoperability with Any Compliant PD

• Two-Point Slope Measurement Veriﬁes the Device

Connected to the Port

• Appropriate Settling Times Implemented to Reject

50Hz/60Hz Power-Line Noise Coupling

• High Power Beyond IEEE 802.3at/af Standard

Supported with Additional Classiﬁcation (Class 5)

when Needed

● IEEE Power-over-Ethernet (PoE) Transmission

Facilitates Signaling Between Power-Sourcing

Equipment (PSE) and Powered Devices (PDs)

• Single-Supply Operation Provides Up to 70W per

Port for PSE Applications, Allowing High-

Capacitance Detection for Legacy PDs

The device features an I C-compatible, 3-wire serial

interface, and is fully software configurable and program-

mable. The device provides instantaneous readout of

port current and voltage through the I C interface. The

device’s extensive programmability enhances system

flexibility, enables field diagnosis, and allows for uses in

other, nonstandard applications.

• 0.25Ω Current-Sensing Resistor Helps Eliminate

Power Losses when Sensing High Currents

● Software-Configurable/Programmable Registers

through I C-Compatible, 3-Wire Serial Interface

The device is available in a space-saving, 32-pin TQFN

(5mm x 5mm) power package and is rated for the automotive

(-40ºC to +105ºC) temperature range.

Produces Instantaneous Readout of Port Current

and Voltage through 9-Bit Port Current and Voltage

Monitoring

• Supports DC Load-Removal Detection

● Saves Space with Thermally Efﬁcient Power Package

• Available in a 32-Pin (5mm x 5mm) TQFN with an

Exposed Pad for Heat Dissipation

Applications

● PSE-ICM

● Power-Sourcing Equipment (PSE)

● Switches/Routers

● Midspan Power Injectors

Ordering Information appears at end of data sheet.

Simpliﬁed Operating Circuit

AGND

PORT 1

OUTPUT

-54V

OUT1

PORT 2

OUTPUT

GATE1

OUT2

MAX5980A

AUTO

MIDSPAN

EN_CL5

PORT 3

OUTPUT

GATE2

OUT3

PORT 4

OUTPUT

GATE3

OUT4

GATE4

-54V

IEEE is a registered service mark of the Institute of Electrical and

Electronics Engineers, Inc.

19-7422; Rev 1; 4/15

12 3 4 5 6 7...50

中文翻译

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与MAX5980A相关器件

型号	品牌	获取价格	描述	数据表
MAX5980AGTJ+	MAXIM	获取价格	Telecom Circuit, 1-Func, BICMOS, ROHS COMPLIANT, TQFN-32
MAX5980GTJ+T	MAXIM	获取价格	Telecom Circuit, 1-Func, CMOS, 5 X 5 MM, 0.75 MM HEIGHT, ROHS COMPLIANT, MO-220, TQFN-32
MAX5981A	MAXIM	获取价格	IEEE 802.3af/at-Compliant, Powered Device Interface
MAX5981A	ADI	获取价格	IEEE 802.3af/at兼容、受电设备接口控制器，集成功率MOSFET
MAX5981AETE+	MAXIM	获取价格	IEEE 802.3af/at-Compliant, Powered Device Interface
MAX5981B	MAXIM	获取价格	IEEE 802.3af/at-Compliant, Powered Device Interface
MAX5981B	ADI	获取价格	IEEE 802.3af/at兼容、受电设备接口控制器，集成功率MOSFET
MAX5981BETE+	MAXIM	获取价格	IEEE 802.3af/at-Compliant, Powered Device Interface
MAX5982A	MAXIM	获取价格	IEEE 802.3af/at-Compliant, Powered Device Interface
MAX5982A	ADI	获取价格	IEEE 802.3af/at兼容PD接口控制器，集成70W大功率MOSFET

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