Datasheet > LTC4266IUHF#PBF

LTC4266IUHF#PBF

更新时间： 2024-09-12 19:49:39

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
32页	397K
描述
LTC4266 - Quad IEEE 802.3at Power Over Ethernet Controller; Package: QFN; Pins: 38; Temperature Range: -40°C to 85°C

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技术参数
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LTC4266IUHF#PBF 技术参数

是否Rohs认证：	符合	生命周期：	Transferred
零件包装代码：	QFN	包装说明：	HVQCCN, LCC38,.2X.28,20
针数：	38	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	3.64	可调阈值：	YES
模拟集成电路 - 其他类型：	POWER SUPPLY MANAGEMENT CIRCUIT	JESD-30 代码：	R-PQCC-N38
JESD-609代码：	e3	长度：	7 mm
信道数量：	4	功能数量：	1
端子数量：	38	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	HVQCCN	封装等效代码：	LCC38,.2X.28,20
封装形状：	RECTANGULAR	封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：	NOT SPECIFIED	电源：	3.3,54 V
认证状态：	Not Qualified	座面最大高度：	0.8 mm
子类别：	Power Management Circuits	最大供电电流 (Isup)：	3 mA
最大供电电压 (Vsup)：	4.3 V	最小供电电压 (Vsup)：	3 V
标称供电电压 (Vsup)：	3.3 V	表面贴装：	YES
技术：	CMOS	温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn)	端子形式：	NO LEAD
端子节距：	0.5 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	5 mm
Base Number Matches：	1

LTC4266IUHF#PBF 数据手册

LTC4266

Quad IEEE 802.3at Power

over Ethernet Controller

FeAtures

Description

Four Independent PSE Channels

The LTC^®4266 is a quad PSE controller designed for use

in IEEE 802.3 Type 1 and Type 2 (high power) compliant

Power over Ethernet systems. External power MOSFETs

enhance system reliability and minimize channel resis-

tance, cutting power dissipation and eliminating the need

for heatsinks even at Type 2 power levels. External power

components also allow use at very high power levels while

remaining otherwise compatible with the IEEE standard.

80V-rated port pins provide robust protection against

external faults.

Compliant with IEEE 802.3at Type 1 and 2

0.34Ω Total Channel Resistance

130mW/Port at 600mA

Advanced Power Management

8-Bit Programmable Current Limit (I

)

LIM

7-Bit Programmable Overload Currents (I

Fast Shutdown of Preselected Ports

14.5-Bit Port Current/Voltage Monitoring

2-Event Classification

)

CUT

Very High Reliability 4-Point PD Detection

The LTC4266 includes advanced power management

features, including current and voltage readback and

programmable I_CUTand I_LIMthresholds. Available C

libraries simplify power-management software develop-

ment; an optional AUTO pin mode provides fully IEEE-

compliant standalone operation with no software required.

Proprietary 4-point PD detection circuitry minimizes false

PD detection while supporting legacy phone operation.

Midspan operation is supported with built-in 2-event clas-

sification and backoff timing. Host communication is via

2-Point Forced Voltage

2-Point Forced Current

High Capacitance Legacy Device Detection

LTC4259A-1 and LTC4258 Pin and SW Compatible

1MHz I C Compatible Serial Control Interface

Midspan Backoff Timer

Supports Proprietary Power Levels Above 25W

Available in 38-Pin 5mm × 7mm QFN and 36-Pin

SSOP Packages

a 1MHz I C serial interface.

ApplicAtions

The LTC4266 is available in a 5mm × 7mm QFN pack-

age that significantly reduces board space compared with

competing solutions. A legacy-compatible 36-pin SSOP

package is also available.

High Power PSE Switches/Routers

High Power PSE Midspans

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

ThinSOT is a trademark of Analog Devices, Inc. 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

100V

TVS

BULK

PORT1

PORT2

PORT3

PORT4

–54V

4266 TA01

4266fg

For more information www.linear.com/LTC4266

12 3 4 5 6 7...32

中文翻译

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与LTC4266IUHF#PBF相关器件

型号	品牌	获取价格	描述	数据表
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
LTC4267-3	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
LTC4267CDHC	Linear	获取价格	Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator
LTC4267CDHC#PBF	Linear	获取价格	LTC4267 - Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulato
LTC4267CDHC#TRPBF	Linear	获取价格	LTC4267 - Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulato
LTC4267CDHC-3	Linear	获取价格	Power over Ethernet IEEE 802.3af PD Interface with Integrated Switching Regulator

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