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参数资料
| 型号： | LTC4264IDE#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR PD INTERFACE 12-DFN |
| 标准包装： | 2,500 |
| 控制器类型： | 以太网供电控制器（POE） |
| 接口： | IEEE 802.3af |
| 电流 - 电源： | 3mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-WFDFN 裸露焊盘 |
| 供应商设备封装： | 12-DFN（4x3） |
| 包装： | 带卷 (TR) |
LTC4264
1
4264f
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
High Power PD Interface
Controller with 750mA
Current Limit
The LTC
4264 is an integrated Powered Device (PD) in-
terface controller intended for IEEE 802.3af Power over
Ethernet (PoE) and high power PoE applications up to 35W.
By including a precision dual current limit, the LTC4264
keeps inrush below the IEEE802.3af current limit levels
to ensure interoperability success while allowing for high
power PD operation. The LTC4264 includes a eld-proven
power MOSFET delivering up to 750mA to the PD load while
maintaining compliance with the IEEE802.3af standard.
Complementary power good outputs allow the LTC4264 to
interface directly with a host of DC/DC converter products.
The LTC4264 provides a complete signature and power
interface solution for PD designs by incorporating the 25k
signature resistor, classication circuitry, input current
limit, undervoltage lockout, thermal overload protection,
signature disable and power good signaling.
The LTC4264 PD interface controller can be used along with
a variety of Linear Technology DC/DC converter products
to provide a complete, cost effective power solution for
high power PD applications.
The LTC4264 is available in the space-saving low prole
(4mm
× 3mm) DFN package.
■ Complete High Power PD Interface Controller
■ IEEE 802.3af
Compliant
■ Onboard 750mA Power MOSFET
■ Complementary Power Good Outputs
■ Flexible Auxiliary Power Options
■ Precision Dual Current Limit with Disable
■ Programmable Classication Current to 75mA
■ Onboard 25k Signature Resistor with Disable
■ Undervoltage Lockout
■ Complete Thermal Overload Protection
■ Available in Low Prole (4mm
× 3mm) DFN Package
■ 802.11n Access Points
■ High Power VoIP Video Phones
■ RFID Reader Systems
■ PTZ Security Cameras and Surveillance Equipment
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
GND
RCLASS
ILIM_EN
SHDN
RCLASS
SMAJ58A
–54V FROM
DATA PAIR
–54V FROM
SPARE PAIR
0.1
F
PWRGD
LTC4264
VIN
RUN
5
F
MIN
3.3V
TO LOGIC
RTN
SWITCHING
POWER
SUPPLY
VIN
VOUT
4264 TA01a
+
–
+
~
+
–
~
+
–
DF1501S
VIN
50V/DIV
VOUT
50V/DIV
PWRGD – VOUT
50V/DIV
IIN
200mA/DIV
TIME (5ms/DIV)
4264 TA01b
CLOAD = 100F
Turn On vs Time
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4265 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Quad IEEE 802.3at Power over Ethernet Controller |
| LTC4265CDE#PBF | 功能描述:IC CTRLR PD INTERFACE HP 12-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
| LTC4265CDE#TRPBF | 功能描述:IC CTRLR PD INTERFACE HP 12-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
| LTC4265CDE-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:IEEE 802.3at High Power PD Interface Controller with 2-Event Classifi cation Recognition |
| LTC4265CDE-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:IEEE 802.3at High Power PD Interface Controller with 2-Event Classifi cation Recognition |
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