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LTC4291IUF#PBF

Power Switch ICs - POE/LAN PSE Digital Control Host interface

  • Package/Case :
  • QFN-24
  • Product Categories :
  • IC Chips
  • RoHs Status:
  • Pb-free Halide free
  • In-stock:
  • 618

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LTC4291IUF#PBF Product Details

Power by Linear™ / Analog Devices’ LTC4291IUF#PBF and LTC4292 are 4-port power sourcing equipment (PSE) controllers designed for use in IEEE 802.3bt Type 3 and 4 compliant Power over Ethernet (PoE) systems. They are designed to power compliant 802.3af, 802.3at, and 802.3bt PDs. The LTC4291IUF#PBF and LTC4292 chipset deliver lowest-in-industry heat dissipation by utilizing low-RDS(ON) external MOSFETs and 0.15 Ω sense resistance per power channel. A transformer-isolated communication protocol replaces expensive optocouplers and complex isolated 3.3 V supply, resulting in significant BOM cost savings.Advanced power management features include per-port 14-bit current monitoring, programmable current limit, and versatile, fast shut-down of preselected ports. Advanced power management host software is available under a no-cost license. PD detection uses a proprietary multipoint detection mechanism ensuring excellent immunity from false PD identification. Auto-class and 5-event physical classification are supported. The LTC4291IUF#PBF and LTC4292 include an I²C serial interface operable up to 1 MHz. These controllers are pin or I²C programmable to negotiate PD delivered power up to 71.3 W. The LTC4191 and LTC4192 are ideal for PoE PSE switches, routers, and midspans.<strong>Features:</strong> Four PSE ports Two power channels per port, Fully compliant IEEE 802.3bt Type 3 and 4 PSE Compliant support for Type 1, 2, 3, and 4 PDs, Low power path dissipation per channel 150 mΩ sense resistance, 30 mΩ or lower MOSFET RDS(ON), Chipset provides electrical isolation Eliminates optos and isolated 3.3 V supply, Very high-reliability multipoint PD detection Connection check distinguishes single-signature and dual-signature PDs, Continuous, dedicated per-port power and current monitoring Per-port power policing, 1 MHz I²C compatible serial control interface, Pin or I²C programmable PD power up to 71.3 W, Available in a 24-lead 4 mm × 4 mm QFN package, PoE PSE switches/routers, PoE PSE midspans

4-PORT IEEE 802.3BT PSE CONTROLL

Feature

  • Four PSE Ports
    • Two Power Channels Per Port
  • Fully Compliant IEEE 802.3bt Type 3 and 4 PSE
    • Compliant Support for Type 1, 2, 3, and 4 PDs
  • Low Power Path Dissipation per Channel
    • 150mΩ Sense Resistance
    • 30mΩ or Lower MOSFET RDS(ON)
  • Chipset Provides Electrical Isolation
    • Eliminates Optos and Isolated 3.3V Supply
  • Very High Reliability Multipoint PD Detection
    • Connection Check Distinguishes Single-Signature and Dual-Signature PDs
  • Continuous, Dedicated Per-Port Power and Current Monitoring
    • Per-Port Power Policing
  • 1MHzI2C Compatible Serial Control Interface
  • Pin or I2C Programmable PD Power Up to 71.3W
  • Available in a 24-Lead 4mm × 4mm QFN Package

Technical Parameters

  • Manufacturer
  • Linear Technology/Analog Devices
  • Series
  • -
  • Packaging
  • Tube&nbsp;
  • Part Status
  • Active
  • Type
  • Controller (PSE)
  • Number of Channels
  • 8
  • Power Max
  • 71.3W
  • Internal Switch(s)
  • No
  • Auxiliary Sense
  • No
  • Standards
  • 802.3at (PoE+), 802.3af (PoE), 802.3bt
  • Voltage Supply
  • 3.6 V ~ 12 V
  • Current Supply
  • -
  • Operating Temperature
  • -40°C ~ 85°C
  • Package / Case
  • 24-WFQFN Exposed Pad
  • Supplier Device Package
  • 24-QFN (4x4)
  • RoHS Status
  • RoHS Compliant
  • Moisture Sensitivity Level (MSL)
  • 1 (Unlimited)
  • Standard Package
  • 91

LTC4291IUF#PBF Documents

  • LTC4291 Technical Documentation/Data sheet

LTC4291IUF#PBF Related Products

Ratings and Reviews (1)

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  • **rago***
    2018-10-02

    Thanks! 100% Good trader

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Q: How does Jotrin guarantee that LTC4291IUF#PBF is the original manufacturer or agent of AD?
We have a professional business development department to strictly test and verify the qualifications of AD original manufacturers and agents. All AD suppliers must pass the qualification review before they can publish their LTC4291IUF#PBF devices; we pay more attention to the channels and quality of LTC4291IUF#PBF products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of LTC4291IUF#PBF chips? Including AD original factory information, IC Chips application, LTC4291IUF#PBF pictures?
You can use Jotrin's intelligent search engine, or filter by Power-over-Ethernet (PoE) Interface Controllers ; PoE Power Sourcing Equipment (PSE) category, or find it through Analog Devices, Inc Information page.
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Analog Devices, Inc

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Analog Devices, Inc. was founded by two MIT graduates, Ray Stata and Matthew Lorber in 1965. The same year, the company released its first product, the model 101 op amp, which was a hockey-puck sized module used in test and measurement equipment. In 1967, the company published the first issue of its...
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