MILPITAS, CA – February 6, 2017 – Linear Technology CorporaTIon introduces the LTC4279, a single-port Power over Ethernet (PoE) controller for power supply equipment (PSE). The device delivers up to 123W for applications requiring high power through CAT-5e cables. Demand for higher power delivery comes from a wide range of applications, including LTE picocells, LED signage, security surveillance systems, home automation and machine vision systems. The highly versatile LTC4279 provides power to a wide range of powered devices (PDs). This includes all traditional (13W), IEEE 802.3at Type 1 (13W) and Type 2 (25.5W) PDs, as well as Linear Technology's proprietary LTPoE++ (up to 90W) and custom ("123W) PD. The device supports two-wire and 4-wire output topologies, as well as single and dual feature architectures. Resistor-adjustable power options make the LTC4279 easy to configure for multiple outlets, simplifying design and bill of materials.
The LTC4279 provides fully autonomous operation for a wide range of PSE applications, including endpoint and mid-span power injectors. A low power sense resistor and external MOSFET simplify the thermal design; the traditional PSE uses a higher RDS(ON) and less robust MOSFET. The discovery of PD is accomplished using a highly reliable 4-point detection mechanism to ensure best-in-class resistance to PD false detection. The LTC4279 provides a rich set of PD grading mechanisms for broad system compatibility. Robustness is enhanced with grading-based current cutoff and limit thresholds, short circuit protection, and ±80V cable surge protection.
The LTC4279 is available in an industrial temperature grade (–40°C to 85°C) in a RoHS-compliant 4mm x 5mm QFN-20 and SO-16 package. The LTC4279 is priced at $3.45 each in 1,000-piece quantities and is available for production. The LTC4279 combines with the LT4275 and LT4276 PD controllers to achieve an end-to-end design of up to 123W. For more product information, please log in to LTC4279.
· Comply with IEEE 802.3at Type 1 and 2 requirements
· Supports up to 90W of LTPoE++
· UltraPWR mode supports custom PD up to 123W
· Support single feature and dual feature PD
· Very low power consumption
o 0.1? Sense resistor
o Low RDS(ON) external MOSFET
· Very reliable 4-point PD detection
· Pin selectable detection delay timer for midspan
· Pin programmable power supply selection
· Status LED pin
· Available in 20-pin QFN and 16-pin SO packages
The US quotes given in this article are for budgetary purposes only. Quotations around the country may vary depending on local tariffs, taxes, fees and exchange rates.
Linear Technology Company ProfileLinear Technology CorporaTIon is a member of the S&P 500 Index and has been designing, manufacturing and selling a wide range of high performance analog integrated circuits for major companies worldwide for more than 30 years. Linear Technology's products form an indispensable bridge between the analog world and digital electronics in our applications, including communications, networking, industrial, automotive, computer, medical, instrumentation, consumer, and military and aerospace systems. . Linear Technology manufactures power management, data conversion, signal conditioning, RF and interface ICs, μModuleÒ subsystems, and wireless sensor networking products. For more information, please log in.
New Energy Power Batteries,New Design Solar Energy Battery,New Energy Battery Lifepo4 12V,New Battery Pack Battery
Shaoxing Honyo International Trading Co., Ltd , https://www.honyopower.com