Datasheet > LTC4266C_15

LTC4266C_15

更新时间： 2024-09-13 01:22:31

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
30页	374K
描述
Quad PoE/PoE/LTPoE PSE Controller

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中文翻译

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LTC4266C_15 数据手册

LTC4266A/LTC4266C

Quad PoE/PoE /LTPoE

PSE Controller

FEATURES

DESCRIPTION

Four Independent PSE Channels

TheLTC^®4266Aisaquadpowersourcingequipment(PSE)

controller capable of delivering up to 90W of LTPoE

Compliant with IEEE 802.3at Type 1 and 2

power to a compatible LTPoE powered device (PD). A

Low Power Dissipation

proprietarydetection/classificationschemeallowsmutual

0.25Ω Sense Resistance Per Channel

identification between a LTPoE PSE and LTPoE PD

whileremainingcompatibleandinteroperablewithexisting

Type 1 (13W) and Type 2 (25.5W) PDs. The LTC4266A

feature set is a superset of the popular LTC4266. These

Very High Reliability 4-Point PD Detection

2-Point Forced Voltage

2-Point Forced Current

High Capacitance Legacy Device Detection

PSE controllers feature low R external MOSFETs and

1MHz I C Compatible Serial Control Interface

0.25Ω sense resistors which are especially important at

Midspan Backoff Timer

theLTPoE currentlevelstomaintainthelowestpossible

Supports 2-Pair and 4-Pair Output Power

heat dissipation.

Available in Multiple Power Grades

LTC4266A-1: LTPoE ™ 38.7W

TheLTC4266CtargetsfullyautomaticPSEsystemspower-

ing Type 1 (up to 13W) PDs.

LTC4266A-2: LTPoE 52.7W

LTC4266A-3: LTPoE 70W

Advanced power management features include: 14-bit

current monitoring ADCs, DAC-programmable current

limit, and versatile quick shutdown of preselected ports.

Advanced power management host software is available

under a no-cost license. PD discovery uses a proprietary

dual-mode4-pointdetectionmechanismensuringexcellent

immunity from false PD detection. The LTC4266 includes

LTC4266A-4: LTPoE 90W

LTC4266C: PoE 13W

Available in 38-Lead 5mm × 7mm QFN Package

APPLICATIONS

LTPoE PSE Switches/Routers

an I C serial interface operable up to 1MHz.

LTPoE PSE Midspans

IEEE 802.3at Type 1 PSE Switches/Routers

IEEE 802.3at Type 1 PSE Midspans

The LTC4266 is available in multiple power grades allow-

ing delivered PD power of 13W, 25.5W, 38.7W, 52.7W,

70W and 90W. These controllers are available in a 38-lead

5mm × 7mm QFN package.

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and

LTPoE and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks

are the property of their respective owners.

TYPICAL APPLICATION

Complete 4-Port Ethernet High Power Source

10Ω

AD0 AD1 AD2 AD3 SHDN1 SHDN2 SHDN3 SHDN4 AUTO MSD RESET MID SDAIN SCL

3.3V

0.1µF

SDAOUT

SMAJ5.0A

10µF

INT

DGND

AGND

LTC4266

0.22µF 100V

S1B

×4

S1B

×4

10Ω

×4

–54V

SENSE1 GATE1 OUT1 SENSE2 GATE2 OUT2 SENSE3 GATE3 OUT3 SENSE4 GATE4 OUT4

SMAJ58A

1µF

BULK

–54V

100V

TVS

BULK

PORT1

PORT2

PORT3

PORT4

4266AC TA01

4266acfd

For more information www.linear.com/LTC4266A

12 3 4 5 6 7...30

中文翻译

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与LTC4266C_15相关器件

型号	品牌	获取价格	描述	数据表
LTC4266CIUHF#PBF	Linear	获取价格	LTC4266A/LTC4266C - Quad PoE/PoE+/LTPoE++ PSE Controller; Package: QFN; Pins: 38; Temperat
LTC4266CUHF#PBF	Linear	获取价格	LTC4266 - Quad IEEE 802.3at Power Over Ethernet Controller; Package: QFN; Pins: 38; Temper
LTC4266IGW#PBF	Linear	获取价格	暂无描述
LTC4266IGW#TRPBF	Linear	获取价格	暂无描述
LTC4266IUHF#PBF	Linear	获取价格	LTC4266 - Quad IEEE 802.3at Power Over Ethernet Controller; Package: QFN; Pins: 38; Temper
LTC4267	Linear	获取价格	Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator
LTC4267	ADI	获取价格	具集成型开关稳压器的以太网供电 IEEE 802.3af PD 接口
LTC4267-1	Linear	获取价格	Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator
LTC4267-1	ADI	获取价格	具集成型开关稳压器的以太网供电 IEEE 802.3af PD 接口
LTC4267-3	Linear	获取价格	Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator

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