MAX5982C

IEEE 802.3af/at兼容PD接口控制器,集成70W大功率MOSFET

70W、PoE供电器件接口控制器,内置MOSFET


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说明

MAX5982A/MAX5982B/MAX5982C为用电设备(PD)提供完整的接口电路,符合以太网供电(PoE)系统IEEE® 802.3af/at标准。MAX5982A/MAX5982B/MAX5982C为PD提供侦测信号、分级信号以及带有浪涌电流控制的集成隔离功率开关。启动过程中,MAX5982A/MAX5982B/MAX5982C将浪涌电流限制在182mA以内,直到隔离功率MOSFET完全开启后切换到较高的限流值(1700mA至2100mA)。器件具有输入UVLO,带有滞回和长周期干扰脉冲屏蔽,以补偿双绞线电缆的阻性衰减,确保上电/掉电期间无干扰传输。MAX5982A/MAX5982B/MAX5982C输入能够承受高达100V的电压。

MAX5982A/MAX5982B/MAX5982C支持IEEE 802.3at标准规定的2级事件分级方法,并提供一路信号用于指示2类供电设备(PSE)的侦测情况。器件检测墙上适配器电源的连接状态,允许从PoE电源平滑切换到墙上适配器电源。

MAX5982A/MAX5982B/MAX5982C还提供电源就绪(PG)信号、2级电流限制和折返式保护、过热保护、di/dt限制。MAX5982A/MAX5982B的休眠模式提供低功耗设计,支持电源信号保持(MPS)功能。MAX5982A/MAX5982B超低功耗休眠模式进一步降低了系统功耗,仍支持MPS。MAX5982A/MAX5982B带有LED驱动器,休眠模式下可自动激活。

MAX5982A/MAX5982B/MAX5982C采用16引脚、5mm x 5mm、TQFN封装,工作在-40°C至+125°C扩展级温度范围。

关键特性

  • 休眠模式和超低功耗休眠模式(MAX5982A/MAX5982B)
  • 兼容于IEEE 802.3af/at
  • 2级事件分级或墙上适配器指示输出
  • 简易的墙上适配器接口
  • 0–5级PoE分级
  • 100V绝对最大额定输入
  • 182mA最大浪涌电流限制
  • 正常工作期间电流限制在1700mA至2100mA
  • 电流限制和折返式保护
  • 传统的36V UVLO
  • LED电流可编程的LED驱动(MAX5982A/MAX5982B)
  • 过热保护
  • 增强散热的5mm x 5mm、16引脚TQFN封装

应用

  • IEEE 802.3af/at用电设备
  • IP电话、无线接点、IP安全摄像机
  • WiMAX™基站
Part NumberCompliancePWMUVLO Threshold
(V)
Package/PinsOper. Temp.
(°C)
Budgetary
Price
See Notes
MAX5982A 
IEEE 802.3af
IEEE 802.3at
No35.4
TQFN/16
-40 to +85$3.42 @1k
MAX5982B 
TQFN/16
MAX5982C 
TQFN/16
查看所有Powered Devices (33)
Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。

质量和环境数据

产品可靠性报告: MAX5982C.pdf 
无铅封装的锡(Sn)晶须报告

CAD Symbols and Footprints

  • MAX5982CETE+
  • MAX5982CETE+T
  • 型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

    质量管理体系 >
    环境管理体系 >

     
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