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参数资料
| 型号： | LTC4266CIUHF#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY MANAGEMENT CKT, PQCC38 |
| 封装： | 7 X 5 MM, LEAD FREE, PLASTIC, MO-220WHKD, QFN-38 |
| 文件页数： | 1/28页 |
| 文件大小： | 325K |
| 代理商： | LTC4266CIUHF#PBF |
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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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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4266CUHF#PBF | 制造商:Linear Technology 功能描述:POE Controller 25.5W 38-Pin QFN EP 制造商:Linear Technology 功能描述:IC POE CONTROLLER 3.3V QFN-38 制造商:Linear Technology 功能描述:IC, POE CONTROLLER, 3.3V, QFN-38; Input Voltage:3.3V; Supply Current:-2.4mA; UVLO:25V; Digital IC Case Style:QFN; No. of Pins:38; Frequency:1MHz; Operating Temperature Min:0C; Operating Temperature Max:70C; MSL:MSL 1 - Unlimited ;RoHS Compliant: Yes |
| LTC4266CUHF#TRPBF | 制造商:Linear Technology 功能描述:POE Controller 25.5W 38-Pin QFN EP |
| LTC4266IGW#PBF | 功能描述:IC CTRLR IEEE 802.3AT 36-SSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 控制器 系列:- 标准包装:2,450 系列:- 控制器类型:SPI 总线至 I²C 总线桥接 接口:I²C，串行，SPI 电源电压:2.4 V ~ 3.6 V 电流 - 电源:11mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-HVQFN（4x4） 包装:托盘 配用:568-3511-ND - DEMO BOARD SPI TO I2C 其它名称:935286452157SC18IS600IBSSC18IS600IBS-ND |
| LTC4266IGW#TRPBF | 制造商:Linear Technology 功能描述:Power Over Ethernet Controller 36-Pin SSOP W T/R 制造商:Linear Technology 功能描述:MS-Hot Swap/POE, PoE+ 25.5W Quad PSE Controller |
| LTC4266IUHF#PBF | 制造商:Linear Technology 功能描述:POE Controller 25.5W 38-Pin QFN EP 制造商:Linear Technology 功能描述:IC POE 802.3AT QUAD PSE 38-QFN 制造商:Linear Technology 功能描述:POE CNTRL QUAD 25.5W 1MHZ 制造商:Linear Technology 功能描述:IC, POE CONTROLLER, 3.3V, QFN-38; Input Voltage:3.3V; Supply Current:-2.4mA; UVLO:25V; Digital IC Case Style:QFN; No. of Pins:38; Frequency:1MHz; Operating Temperature Min:-40C; Operating Temperature Max:85C; MSL:MSL 1 - Unlimited ;RoHS Compliant: Yes |
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