LTC4266A4，以太网供电方案，PSE控制芯片，符合标准，AT，AF，及高功率供电（单口可达90w）。

文档内容节选

LTC4266 Quad IEEE 8023at Power over Ethernet Controller DESCRIPTION The LTC4266 is a quad PSE controller designed for use in IEEE 8023 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 I......