LTC4265 - IEEE 802.3 at High Power PD Interface Controller with 2-Event Classification Recognition
The LTC®4265 is a 3rd generation Powered Device (PD) Interface controller intended for IEEE 802.3at high power Power-over-Ethernet (PoE) applications up to 25.5W. By supporting 1-event and 2-event classification signaling as defined by IEEE 802.3, the LTC4265 can be used in a wide range of product configurations. A 100V MOSFET isolates the DC/DC converter during detection and classification, and provides 100mA inrush current for a smooth power-up transition. The LTC4265 also includes complementary power good outputs, an on-board signature resistor, undervoltage/overvoltage lockout and comprehensive thermal protection. All Linear Technology PD solutions include a shutdown pin with signature corrupt to provide flexible auxiliary power options.
The LTC4265 PD interface controller can be used along with a variety of DC/DC converter products to provide a complete, cost effective power solution for high power PD applications.
The LTC4265 is available in the space-saving low profile (4mm × 3mm) DFN package and is drop-in compatible with the LTC4264.
Features
Typical Application  | Applications
Packaging |
Order Information
| Part Number | Package | Temp | Price(1-99) | Price (1k)* |
|---|---|---|---|---|
| LTC4265CDE#PBF | 4x3 DFN-12 | C | $2.57 | $1.80 |
| LTC4265CDE#TRPBF | 4x3 DFN-12 | C | $1.86 | |
| LTC4265IDE#PBF | 4x3 DFN-12 | I | $3.07 | $2.15 |
| LTC4265IDE#TRPBF | 4x3 DFN-12 | I | $2.21 |
Demo Boards
| Part Number | Description | Price |
|---|---|---|
| DC1415A | LTC4265 IEEE802.3at PD Controller | $75.00 |
