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ANALOG DEVICES LTC4274AIUHF-4#PBF
POE IC, PSE Controller, 57 V Input, 1 MHz, 1 Channel, 90 W, 25 V UVLO, -40 to 85 °C, QFN-EP-38
- Manufacturer:
- ANALOG DEVICES ANALOG DEVICES
- Manufacturer Part No:
- LTC4274AIUHF-4#PBF
- Order Code:
- 4026193
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- Product Range
- -
- Technical Datasheet:
- LTC4274AIUHF-4#PBF Datasheet
- ECAD / MCAD
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Product Overview
LTC4274A is a single power sourcing equipment (PSE) controller capable of delivering upto 90W of LTPoE++ power to a compatible LTPoE++ Powered Device (PD). A proprietary detection/classification scheme allows mutual identification between a LTPoE++ PSE and LTPoE++ PD while remaining compatible and interoperable with existing type 1 (13W) and type 2 (25.5W) PDs. Its feature set is a superset of the popular LTC4274. This PSE controllers feature low-RON external MOSFETs and 0.25 ohm sense resistors which are especially important at the LTPoE++ current levels to maintain the lowest possible heat dissipation. Advanced power management features include a 14bit current monitoring ADC, DAC-programmable current limit, and versatile quick port shutdown. It is widely used in applications such as LTPoE++ PSE switches/routers, LTPoE++ PSE midspans, IEEE 802.3at type 1 PSE switches/routers, IEEE 802.3at type 1 PSE midspans etc.
- Very high reliability 4-point PD detection
- 2-point forced voltage, 2-point forced current
- High capacitance legacy device detection
- 1MHz I²C compatible serial control interface
- Midspan backoff timer, supports 2-pair and 4-pair output power
- Max power is 90W
- VDD supply voltage is 3.3V typ at (TA = 25°C, AGND – VEE = 54V)
- VDD supply current is 1.1mA typ at (TA = 25°C, AGND – VEE = 54V)
- 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, LTPoE++
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- PSE Controller
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- 57V
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- -
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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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- 90W
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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 (2)
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66 deliver in 3-4 business days from our UK warehouse
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¥2,114.91
(¥2,326.40 Inc. JCT)
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