sales@hkmjd.com
Service Telephone:86-755-83294757
Trade Name:Power over Ethernet (PoE) controller
Brand:ADI
Particular Year:25+
Package:QFN-28
Delivery Date:New and original
Stock: 2000pcs
The LT4276BIUFD is a pin-to-pin compatible IEEE 802.3 and LTPoE++ receiving device (PD) controller. The device includes an isolated switching regulator capable of performing synchronous operations in forward and flyback topologies with auxiliary power support capability. The LT4276BIUFD is a fully IEEE 802.3at 25.5W Type 2 (PoE+) compliant PD.
The LT4276BIUFD supports forward and flyback power topologies and can be configured for a wide range of PoE applications. Flyback topology supports No-Opto feedback. The auxiliary input voltage can be accurately detected with a single resistance divider connected to the AUX pin.
The LT4276BIUFD has the following features:
IEEE 802.3af/at and LTPoE++™ 90W Receiving Device (PD) with forward/flyback controller
The LT4276A supports all of the following standards:
LTP ++ 38.7W, 52.7W, 70W and 90W
Comply with IEEE 802.3at (25.5W) specification
Comply with IEEE 802.3at/af specification
Superior surge protection (100V absolute maximum)
Wide junction temperature range (-40 °C to 125°C)
Auxiliary power support down to 9V
Flyback operation requires no optical isolator
External hot-swapable N-channel MOSFETs are used to achieve the lowest power dissipation and highest system efficiency
An end-to-end efficiency of >94% can be achieved with the LT4321 ideal diode bridge
Available in a 28-pin 4mm x 5mm QFN package
Model
Brand
Package
Quantity
Describe
ADI
DFN-10
50000
Power over Ethernet Controller (PoE) 1 channel 802.3at (PoE+), 802.3af (PoE), LTPoE++ 10-DFN (3x3)
TI
TSSOP-28
80000
Power over Ethernet Controller (PoE) 4-channel 802.3at (PoE+), 802.3af (PoE) 28-TSSOP
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