參數(shù)資料
型號(hào)： LTC4266AIUHF-2#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 電源管理
英文描述： POWER SUPPLY MANAGEMENT CKT, PQCC38
封裝： 7 X 5 MM, LEAD FREE, PLASTIC, MO-220WHKD, QFN-38
文件頁數(shù)： 1/28頁
文件大小： 325K
代理商： LTC4266AIUHF-2#TRPBF
LTC4266A/LTC4266C
1
4266acf
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LTPoE++ PSE Switches/Routers
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LTPoE++ PSE Midspans
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IEEE 802.3at Type 1 PSE Switches/Routers
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IEEE 802.3at Type 1 PSE Midspans
ApplicAtions
FeAtures
Description
Quad PoE/PoE+/LTPoE++
PSE Controller
TheLTC4266AisaquadPowerSourcingEquipment(PSE)
controller capable of delivering up to 90W of LTPoE++
power to a compatible LTPoE++ Powered Device (PD). A
proprietarydetection/classificationschemeallowsmutual
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
PSE controllers feature low RON external MOSFETs and
0.25Ω sense resistors which are especially important at
the LTPoE++ current levels to maintain the lowest possible
heat dissipation.
TheLTC4266CtargetsfullyautomaticPSEsystemspower-
ing Type 1 (up to 13W) PDs.
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
an I2C serial interface operable up to 1MHz.
The LTC4266 is available in multiple power grades allow-
ing delivered PD power of 13W, 25W, 35W, 45W, 70W and
90W. These controllers are available in a 38-pin 5mm ×
7mm QFN package.
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Four Independent PSE Channels
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Compliant with IEEE 802.3at Type 1 and 2
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Low Power Dissipation
0.25Ω Sense Resistance Per Channel
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Very High Reliability 4-Point PD Detection
2-Point Forced Voltage
2-Point Forced Current
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High Capacitance Legacy Device Detection
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1MHz I2C Compatible Serial Control Interface
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Midspan Backoff Timer
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Supports 2-Pair and 4-Pair Output Power
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Available in Multiple Power Grades
LTC4266A-1: LTPoE++ 35W
LTC4266A-2: LTPoE++ 45W
LTC4266A-3: LTPoE++ 70W
LTC4266A-4: LTPoE++ 90W
LTC4266C: PoE 13W
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Available in 38-Pin 5mm × 7mm QFN Package
typicAl ApplicAtion
Complete 4-Port Ethernet High Power Source
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.
4266 TA01
SCL
SDAIN
SDAOUT
AD0
AD1
AD2
AD3
AGND VEE SENSE1
–50V
1F
SMAJ58A
GATE1 OUT1
OUT2
OUT3
SENSE2 GATE2
SENSE3 GATE3
SENSE4 GATE4 OUT4
PORT1
–50V
0.22F 100V
×4
S1B
×4
S1B
×4
PORT2
PORT3
PORT4
DGND
VDD
INT
SHDN1 SHDN2
AUTO
MSD RESET
SHDN3 SHDN4
MID
0.1F
3.3V
LTC4266
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC4266AIUHF-3#PBF 功能描述:IC CONTROLLER PSE QUAD 38QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 控制器 系列:* 標(biāo)準(zhǔn)包裝:2,450 系列:- 控制器類型:SPI 總線至 I²C 總線橋接 接口:I²C，串行，SPI 電源電壓:2.4 V ~ 3.6 V 電流 - 電源:11mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-HVQFN（4x4） 包裝:托盤 配用:568-3511-ND - DEMO BOARD SPI TO I2C 其它名稱:935286452157SC18IS600IBSSC18IS600IBS-ND
LTC4266AIUHF-3#TRPBF 功能描述:IC CONTROLLER PSE QUAD 38-QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:2,450 系列:- 控制器類型:SPI 總線至 I²C 總線橋接 接口:I²C，串行，SPI 電源電壓:2.4 V ~ 3.6 V 電流 - 電源:11mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-HVQFN（4x4） 包裝:托盤 配用:568-3511-ND - DEMO BOARD SPI TO I2C 其它名稱:935286452157SC18IS600IBSSC18IS600IBS-ND
LTC4266AIUHF-4#PBF 功能描述:IC CONTROLLER PSE QUAD 38-QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:2,450 系列:- 控制器類型:SPI 總線至 I²C 總線橋接 接口:I²C，串行，SPI 電源電壓:2.4 V ~ 3.6 V 電流 - 電源:11mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-HVQFN（4x4） 包裝:托盤 配用:568-3511-ND - DEMO BOARD SPI TO I2C 其它名稱:935286452157SC18IS600IBSSC18IS600IBS-ND
LTC4266AIUHF-4#TRPBF 功能描述:IC CONTROLLER PSE QUAD 38-QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:2,450 系列:- 控制器類型:SPI 總線至 I²C 總線橋接 接口:I²C，串行，SPI 電源電壓:2.4 V ~ 3.6 V 電流 - 電源:11mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-HVQFN（4x4） 包裝:托盤 配用:568-3511-ND - DEMO BOARD SPI TO I2C 其它名稱:935286452157SC18IS600IBSSC18IS600IBS-ND
LTC4266C 制造商:LINER 制造商全稱:Linear Technology 功能描述:12-Port PoE/PoE+/LTPoE++ PSE Controller
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