概览

优势和特点

  • LTPoE++®/IEEE 802.3bt Powered Device (PD) Controller
  • Supports Up to 90W PDs
  • Distinguishes Between LTPoE++ and IEEE 802.3bt PSEs
  • 5-Event Classification Sensing
  • Superior Surge Protection (100V Absolute Maximum)
  • Wide Junction Temperature Range (–40°C to 125°C)
  • Overtemperature Protection
  • Integrated Signature Resistor
  • External Hot Swap N-Channel MOSFET for Lowest Power Dissipation and Highest System Efficiency
  • Configurable Aux Power Support as Low as 9V
  • Pin Compatible with LT4275A/B/C and LT4294
  • Available in 10-Lead MSOP and 3mm × 3mm DFN Packages

产品详情

The LT4293 is an LTPoE++/IEEE 802.3af/at/bt-compliant powered device (PD) interface controller. The T2P output distinguishes between LTPoE++ and IEEE 802.3bt power sourcing equipment (PSE) during mutual identification and negotiation of available power.

The LT4293 utilizes an external, low RDS(ON), N-channel, hot swap MOSFET and supports the LT4320/LT4321 ideal bridges, to extend the end-to-end power delivery efficiency and eliminate costly heat sinks. The LT4293 also includes a power good output, onboard signature resistor, undervoltage lockout, and thermal protection. Start-up inrush current is adjustable with an external capacitor. Auxiliary power override is supported as low as 9V with the AUX pin.

The LT4293 can be configured to support all possible LTPoE++, 802.3bt, 802.3at and 802.3af power levels with external component changes. Pin-for-pin compatibility with the LT4275 and LT4294 family of PD Interface Controllers enables easy migration between LTPoE++ PDs and IEEE 802.3bt-compliant PDs.

 

Applications 

  • High Power Wireless Data Systems
  • Outdoor Security Camera Equipment
  • Commercial and Public Information Displays
  • High Temperature Industrial Applications

产品生命周期 icon-recommended 量产

该产品系列中至少有一个型号已量产并可供采购。该产品适合用于新设计,但也可能有更新的替代产品。

设计资源

ADI始终把满足您最高可靠性水平的产品放在首要位置。我们通过在所有产品、工艺设计和制造过程中引入高质量和可靠性检查实践这一承诺。发运的产品实现“零缺陷”始终是我们的目标。

讨论

LT4293 没有找到你想要的? 即刻访问 ADI中文技术论坛 »

样片申请及购买

电脑版网站提供样片和购买功能
返回
查询库存


这里所列出的美国报价单仅供预算参考,指美元报价(规定订量的每片美元,美国离岸价),如有修改不再另行通知。由于地区关税、商业税、汇率及手续费原因,国际报价可能不同。对于特殊批量报价,请与您当地的ADI公司办事处或代理商联络。对于评估板和套件的报价是指一个单位价格。


价格表帮助