Welcome Here  Shenzhen Mingjiada Electronics Co., Ltd.

The LTC4291IUF-1 is a 4-port Power Supply device (PSE) controller designed for use in Power over Ethernet (PoE) systems that comply with IEEE 802.3bt Type 3 and Type 4 specifications. The LTC4291IUF-1 is designed to power PD to 802.3af, 802.3at and 802.3bt standards. The LTC4291IUF-1 chipset achieves the industry's lowest heat dissipation by utilizing low RDS(ON) external MOSFETs and a 0.15Ω detection resistor per power channel.

The LTC4291IUF-1 has the following characteristics:

Four PSE ports

Each port has two power channels

PSE fully compliant with IEEE 802.3bt Class 3 and Class 4 standards

Compliance support for Category 1, 2, 3 and 4 PDS

Each channel has low power path loss

150mΩ detection resistance

30mΩ or low MOSFET RDS(ON)

The chipset provides electrical isolation

Photoelectric components and isolated 3.3V power supplies are no longer required

Extremely reliable multi-point PD detection

Connection checks can distinguish between single-signed and double-signed PD

Continuous, dedicated per-port power and current monitoring

Power monitoring for each port

Serial control interface compatible with 1MHz I2C

Up to 71.3W pin or I2C programmable PD power supply

Available in 24-pin 4mm x 4mm QFN package

• 1.Is the inventory and price seen on the platform accurate?

  A: all online goods on the shelves can be ordered online, but considering the large liquidity of spot inventory, it is not possible to achieve 100% accuracy at present. In case of any abnormality, you can contact our company online and give the corresponding solution.

• 2.Are all our products genuine?

  A: our self-supporting products are from cooperative domestic and foreign original factories or authorized agents, and the source can be traced to ensure the original and authentic products.

• 3.Can you provide the qualification certificate of the original factory or agent?

  A: at present, our self-employed brands TI，ST，ADI，NXP，LATTICE，CYPRESS，INFINEON，XILINX and other first-line brands. Other channels are the original factory and agency channels. If necessary, we can communicate and confirm according to the specific brand and model.

• 4.Can I make an inquiry through the company's website?

  A: You can inquire through the website, or by phone and email.

• 5.When can I deliver the goods after placing an order? How long will it take to get there?

  A: the delivery date is marked in most commodity information. You can estimate the delivery time of the commodity according to the delivery date. The specific arrival time depends on the warehouse where the commodity is located and the logistics mode you choose.

• 6.Can the company issue an invoice?

  A: you can issue ordinary invoices for individual users or special VAT invoices for enterprise users.