LTC4270AIUKG#PBF PoE Power Sourcing Equipment (PSE) by Analog Devices

Status: Production
Series: LTC4270
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock

The LTC4270/LTC4271 chipset is a 12-port power sourcing equipment (PSE) controller designed for use in IEEE 802.3at Type 1 and Type 2 (high power) compliant Power over Ethernet (PoE) systems. Transformer-isolated communication protocol replaces expensive opto-couplers and complex isolated 3.3V supply resulting in significant BOM cost savings. The LTC4270/LTC4271 chipset delivers lowest-in-industry heat dissipation by utilizing low-RDS(ON) external MOSFETs and 0.25Ω sense resistors.Advanced power management features include per-port 12‑bit current monitoring ADCs, DAC-programmable current limit, and versatile fast shut-down of preselected ports. Advanced power management host software is available under a no-cost license. PD discovery uses a proprietary dual-mode 4-point detection mechanism ensuring excellent immunity from false PD detection. Midspan PSEs are supported with 2-event classification and a 2 second backoff timer. The LTC4270/LTC4271 includes an I2C serial interface operable up to 1MHz.The LTC4270/LTC4271 is available in multiple power grades allowing delivered PD power up to 90W.

Where to Buy

Prices starting from US$12.20

Distributor Stock
Logo for Analog Devices
Analog Devices
from US$12.20
1,978
in stock
Buy Now
Logo for Richardson RFPD
Richardson RFPD
from US$15.75
-
Buy Now

Features

12 Independent PSE Channels
Compliant with IEEE 802.3at Type 1 and 2
Chipset Provides Electrical Isolation
Reduced BOM Cost
Eliminates up to 6 High Speed Opto-Couplers
Eliminates Isolated 3.3V Power Supply
Low Power Dissipation
0.25Ω Sense Resistance Per Channel
Very High Reliability 4-Point PD Detection
2-Point Forced Voltage
2-Point Forced Current
VEE and VPORT Monitoring
1 Second Rolling IPORT Averaging
Supports 2-Pair and 4-Pair Output Power
1MHz I2C Compatible Serial Control Interface
Available In Three Power Grades
A-Grade – LTPoE++™ 38.7W to 90W
B-Grade – PoE+ 25.5W
C-Grade – PoE 13W
Available In 52-Lead 7mm × 8mm (LTC4270) and 24‑Lead 4mm × 4mm (LTC4271) QFN Packages

Alternative Descriptions

12-Port PoE/PoE+/LTPoE++ PSE C | Analog Devices
POWER MANAGEMENT IC | Richardson RFPD


LTC4270AIUKG#PBF Semiconductors - ICs by Linear Technology

PSE CNTRL 12 PORT 90W 1MHZ 24QFN

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Input Voltage 3.3V
Output Current -
UVLO 2.7V
Controller IC Case Style QFN
No. of Pins 52Pins
Duty Cycle (%) 6.3%
Frequency 1MHz
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)
Operating Temperature Range -40°C to +85°C
Supply Current 10mA

Frequently Asked Questions

Where can I find additional details, specifications and documents for a LTC4270AIUKG#PBF?

Additional datasheets, footprints and schematics for LTC4270AIUKG#PBF are listed on our Part Details page. You can also find images and similar parts to LTC4270AIUKG#PBF on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for LTC4270AIUKG#PBF on our Product Comparison page. Access via the 'View Pricing & Stock' button to view LTC4270AIUKG#PBF price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does LTC4270AIUKG#PBF fall under?

The LTC4270AIUKG#PBF is listed under PoE Power Sourcing Equipment (PSE).

Can I view similar or alternative parts?

You can view similar parts to LTC4270AIUKG#PBF when available in the PoE Power Sourcing Equipment (PSE) range under the specifications section at the bottom of the details page.

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Is the LTC4270AIUKG#PBF RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

Which authorised distributors for LTC4270AIUKG#PBF have stock available?

Authorised distributors including Analog Devices and Richardson RFPD have stock available or on a lead time for LTC4270AIUKG#PBF.

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