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ANALOG DEVICES LTC4274IUHF#PBF
POE IC, PSE Controller, 57 V Input, 1 MHz, 1 Channel, 25.5 W, 25 V UVLO, -40 to 85 °C, QFN-EP-38
- Manufacturer:
- ANALOG DEVICES ANALOG DEVICES
- Manufacturer Part No:
- LTC4274IUHF#PBF
- Order Code:
- 4026194
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- Technical Datasheet:
- LTC4274IUHF#PBF Datasheet
- ECAD / MCAD
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Product Overview
LTC4274 is a single power sourcing equipment controller designed for use in IEEE 802.3 type 1 and type 2 (high power) compliant power over ethernet systems. External power MOSFETs enhance system reliability and minimize channel resistance, cutting power dissipation and eliminating the need for heatsinks even at type 2 power levels. External power components also allow use at very high power levels while remaining otherwise compatible with the IEEE standard. 80V-rated port pins provide robust protection against external faults. It includes advanced power management features, including current and voltage readback and programmable ICUT and ILIM thresholds. Available C libraries simplify software development; an optional AUTO pin mode provides fully IEEE-compliant standalone operation with no software required. It is used in applications such as PSE switches/routers, PSE midspans etc.
- 8bit programmable current limit (ILIM)
- 7bit programmable overload currents (ICUT
- Fast shutdown, 14.5bit port current/voltage monitoring
- 2-event classification, 2-point forced voltage, 2-point forced current
- High capacitance legacy device detection
- 1MHz I²C compatible serial control interface
- Midspan backoff timer, supports proprietary power levels above 25W
- VDD supply voltage is 3.3V typ at (TA = 25°C)
- VDD supply current is 1.1mA typ at (TA = 25°C)
- Operating temperature range from -40°C to 85°C, package style is 38-lead plastic QFN
Footnotes
ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party
Product Information
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- IEEE 802.3af, 802.3at
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- PSE Controller
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- 57V
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- 25V
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- QFN-EP
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- 38Pins
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- 1Channels
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- 25.5W
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- 6.3%
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- 1MHz
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- Surface Mount
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- -40°C
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- 85°C
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- -
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- MSL 1 - Unlimited
Technical Documents (1)
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40 deliver in 3-4 business days from our UK warehouse
Due to market conditions delivery times are for general guidance only and may be subject to change at short notice
¥1,955.81
(¥2,151.39 Inc. JCT)
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| 10+ | ¥1,172.29 (¥1,289.52) |
| 52+ | ¥1,161.03 (¥1,277.13) |
| 104+ | ¥1,149.77 (¥1,264.75) |
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