LTC4264
NOT RECOMMENDED FOR NEW DESIGNSHigh Power PD Interface Controller with 750mA Current Limit
- Part Models
- 4
- 1ku List Price
- Starting From $2.24
Overview
- Complete High Power PD Interface Controller
- IEEE 802.3af® Compliant
- Onboard 750mA Power MOSFET
- Complementary Power Good Outputs
- Flexible Auxiliary Power Options
- Precision Dual Current Limit with Disable
- Programmable Classification Current to 75mA
- Onboard 25k Signature Resistor with Disable
- Undervoltage Lockout
- Complete Thermal Overload Protection
- Available in Low Profile (4mm × 3mm) DFN Package
The LTC4264 is an integrated Powered Device (PD) interface controller intended for IEEE 802.3af Power over Ethernet (PoE) and high power PoE applications up to 35W. By including a precision dual current limit, the LTC4264 keeps inrush below the IEEE802.3af current limit levels to ensure interoperability success while allowing for high power PD operation. The LTC4264 includes a field-proven power MOSFET delivering up to 750mA to the PD load while maintaining compliance with the IEEE802.3af standard. Complementary power good outputs allow the LTC4264 to interface directly with a host of DC/DC converter products. The LTC4264 provides a complete signature and power interface solution for PD designs by incorporating the 25k signature resistor, classification circuitry, input current limit, undervoltage lockout, thermal overload protection, signature disable and power good signaling.
The LTC4264 PD interface controller can be used along with a variety of ADI's DC/DC converter products to provide a complete, cost effective power solution for high power PD applications.
The LTC4264 is available in the space-saving low profile (4mm × 3mm) DFN package.
Applications
- 802.11n Access Points
- High Power VoIP Video Phones
- RFID Reader Systems
- PTZ Security Cameras and Surveillance Equipment
Documentation
Data Sheet 1
Reliability Data 1
User Guide 1
Product Selector Card 3
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC4264CDE#PBF | 12-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC4264CDE#TRPBF | 12-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC4264IDE#PBF | 12-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC4264IDE#TRPBF | 12-Lead DFN (4mm x 3mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Circuit Monitors 1 | ||
| LT2940 | PRODUCTION | Power and Current Monitor |
| Power-over-Ethernet (PoE) Controllers 1 | ||
| LT4275 | PRODUCTION | LTPoE++/PoE+/PoE PD Controller |
| Parts | Product Life Cycle | Description |
|---|---|---|
| LTC4265 | PRODUCTION | IEEE 802.3 at High Power PD Interface Controller with 2-Event Classification Recognition |
Evaluation Kits
LTC4264 | High Power PD Interface Controller with 750mA Current Limit
Resources
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