Analog Devices Inc.
Analog Devices (NASDAQ: ADI) leads in crafting high-performance analog, mixed-signal, and digital signal processing integrated circuits. For decades, they've tackled signal processing challenges across global electronics. With over 100,000 clients, their products convert real-world phenomena into electrical signals. Merged with Maxim Integrated, they offer top-tier mixed-signal and power management technologies, solving complex problems from DC to 100 GHz and sensor to cloud.
View All Product from Analog Devices Inc.(PD) Controllern LTPoE++ 38.7W, 52.7W, 70W and 90Wn IEEE 802.3at 25.5W Compliantn IEEE 802.3af Up to 13W CompliantPower Dissipation and Highest System EfficiencyPackages
The LT®4275 is a pin-for-pin compatible family of IEEE802.3 and LTPoE++ powered device (PD) controllers.The LT4275A employs a proprietary LTPoE++ classificationscheme, delivering 38.7W, 52.7W, 70W or 90W of powerat the PD RJ45 connector. The LT4275A is fully compat-ible with IEEE 802.3. The LT4275B is an IEEE 802.3atcompliant, Type 2 (PoE+) PD delivering up to 25.5W. TheLT4275C is an IEEE 802.3af compliant, Type 1 (PoE) PDdelivering up to 13W.The LT4275 internal charge pump provides an N-channelMOSFET solution, eliminating a larger and more costlyP-channel MOSFET. A low RDS(ON) MOSFET also maxi-mizes power delivery and efficiency, reduces power andheat dissipation, and eases thermal design. Startup inrushcurrent is adjustable with an external capacitor. The LT4275also includes a power good output, on-board signatureresistor, undervoltage lockout, and thermal protection. TheLT4275A/LT4275B drives a single opto-coupler to indicatethe power level of the attached PSE. Pin-selectable sup-port for non-standard low voltage operation is provided.Auxiliary power override is supported with the AUX pin.The LT4275A can be configured to support all possibleLTPoE++, 802.3at and 802.3af power levels with externalcomponent changes.
TYPE | DESCRIPTION | Select all |
---|---|---|
Auxiliary Sense | Yes | |
Number of Channels | 1 | |
Type | Controller (PD) | |
Supplier Device Package | 10-MSOP | |
Product Status | Active | |
Package / Case | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | |
Package | Tape & Reel (TR) | |
Mounting Type | Surface Mount | |
Series | - | |
Operating Temperature | -40°C ~ 85°C | |
Current - Supply | 2mA (Max) | |
Voltage - Supply | 23V ~ 60V | |
Standards | 802.3af (PoE) | |
Internal Switch(s) | No | |
Power - Max | 13 W |
Analog Devices Inc.
Analog Devices (NASDAQ: ADI) leads in crafting high-performance analog, mixed-signal, and digital signal processing integrated circuits. For decades, they've tackled signal processing challenges across global electronics. With over 100,000 clients, their products convert real-world phenomena into electrical signals. Merged with Maxim Integrated, they offer top-tier mixed-signal and power management technologies, solving complex problems from DC to 100 GHz and sensor to cloud.
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