LTC4274A

推荐新设计使用

单通道 PoE / PoE+ / LTPoE++ PSE 控制器

数据手册 产品选型表
产品模型
10
产品技术资料帮助

ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许，也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。
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产品详情

  • 符合 IEEE 802.3at Type 1 和 Type 2 标准
  • 低功耗 
    • 每个通道具有 0.25Ω 的检测电阻 
  • 非常高可靠性的 4 点 PD 检测 
    • 两点施加电压 
    • 两点施加电流
  • 高电容老式设备检测
  • 1MHz I2C 兼容型串行控制接口
  • 中跨超时定时器
  • 支持两对和四对输出功率
  • 可提供多种功率级 
    • LTC4274A-1：LTPoE++™38.7W 
    • LTC4274A-2：LTPoE++ 52.7W 
    • LTC4274A-3：LTPoE++ 70W 
    • LTC4274A-4：LTPoE++ 90W 
    • LTC4274C：PoE 13W
  • 采用 38 引脚 5mm x 7mm QFN 封装
LTC4274A
单通道 PoE / PoE+ / LTPoE++ PSE 控制器
Complete Single-Port Ethernet High Power Source Product Package 1
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参考资料

数据手册 1

用户手册 1

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硬件生态系统

部分模型 产品周期 描述
PoE受电设备(PD) 1
LT4275
推荐新设计使用 LTPoE++ / PoE+ / PoE PD 控制器
串行总线缓冲器、扩展器和加速度计 1
LTC4310
量产 可热插拔的 I2C 隔离器
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工具及仿真模型

LTspice

LTspice中提供以下器件型号：

  • LTC4274
LTspice

LTspice®是一款强大高效的免费仿真软件、原理图采集和波形观测器，为改善模拟电路的仿真提供增强功能和模型。

评估套件

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC1814A-D

LTC4274A-4 Demo Board | LTPoE++ (90W) PSE

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产品详情

Demonstration circuit 1814A features the LTC4274A, single port power sourcing equipment (PSE) controller, capable of delivering up to 90W of LTPoE++™ power to a compatible LTPoE++ powered device (PD). A proprietary detection/classification scheme allows mutual identification between an LTPoE++ PSE and LTPoE++ PD while remaining compatible and interoperable with existing Type 1 (13W) and Type 2 (25.5W) PDs. The LTC4274A feature set is a superset of the popular LTC4274. These PSE controllers utilize 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.

eval board
schematic 6
DC1814A-A

LTC4274A-1 Demo Board | LTPoE++ (38.7W) PSE

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产品详情

Demonstration circuit 1814A features the LTC4274A, single port power sourcing equipment (PSE) controller, capable of delivering up to 90W of LTPoE++™ power to a compatible LTPoE++ powered device (PD). A proprietary detection/classification scheme allows mutual identification between an LTPoE++ PSE and LTPoE++ PD while remaining compatible and interoperable with existing Type 1 (13W) and Type 2 (25.5W) PDs. The LTC4274A feature set is a superset of the popular LTC4274. These PSE controllers utilize 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.

eval board
schematic 7
DC1814A-C

LTC4274A-3 Demo Board | LTPoE++ (70W) PSE

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产品详情

Demonstration circuit 1814A features the LTC4274A, single port power sourcing equipment (PSE) controller, capable of delivering up to 90W of LTPoE++™ power to a compatible LTPoE++ powered device (PD). A proprietary detection/classification scheme allows mutual identification between an LTPoE++ PSE and LTPoE++ PD while remaining compatible and interoperable with existing Type 1 (13W) and Type 2 (25.5W) PDs. The LTC4274A feature set is a superset of the popular LTC4274. These PSE controllers utilize 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.

eval board
schematic 8
DC1814A-B

LTC4274A-2 Demo Board | LTPoE++ (52.7W) PSE

立即购买 更多内容

产品详情

Demonstration circuit 1814A features the LTC4274A, single port power sourcing equipment (PSE) controller, capable of delivering up to 90W of LTPoE++™ power to a compatible LTPoE++ powered device (PD). A proprietary detection/classification scheme allows mutual identification between an LTPoE++ PSE and LTPoE++ PD while remaining compatible and interoperable with existing Type 1 (13W) and Type 2 (25.5W) PDs. The LTC4274A feature set is a superset of the popular LTC4274. These PSE controllers utilize 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.
DC1814A-D
LTC4274A-4 Demo Board | LTPoE++ (90W) PSE
DC1814A-D Demo Board DC1814A-D Demo Board DC1814A-D Demo Board DC1814A-D Demo Board DC1814A - Schematic
DC1814A-A
LTC4274A-1 Demo Board | LTPoE++ (38.7W) PSE
DC1814A - Schematic
DC1814A-C
LTC4274A-3 Demo Board | LTPoE++ (70W) PSE
DC1814A - Schematic
DC1814A-B
LTC4274A-2 Demo Board | LTPoE++ (52.7W) PSE
DC1814A - Schematic
DC590B
用于凌力尔特 QuikEval 演示板的 USB 串行控制器
DC590B - Schematic

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