Overview
The LTC4291IUF-1#TRPBF is a 4-port Power Sourcing Equipment (PSE) controller designed by Analog Devices Inc. This controller is fully compliant with IEEE 802.3bt Type 3 and 4, as well as supporting Type 1 and 2 Power over Ethernet (PoE) standards. It is part of the Linear Technology/Analog Devices family and is widely used in various PoE applications. The device features low power path dissipation, high reliability multipoint PD detection, and continuous per-port power and current monitoring. It is available in a 24-lead WFQFN exposed pad package and operates over a temperature range of -40°C to 85°C.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of Channels | 8 | - |
| Package / Case | 24-WFQFN Exposed Pad | - |
| Operating Temperature | -40°C to 85°C | °C |
| Supply Voltage | 3V to 3.6V | V |
| Supply Current | 10mA | mA |
| Maximum Power | 71.3W | W |
| Standards Compliance | IEEE 802.3af, 802.3at, 802.3bt | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | - |
Key Features
- Fully compliant with IEEE 802.3bt Type 3 and 4, and supports Type 1 and 2 PDs
- Low power path dissipation per channel
- 150mΩ sense resistance and 30mΩ or lower MOSFET RDS(ON)
- Provides electrical isolation, eliminating optos and isolated 3.3V supply
- High reliability multipoint PD detection and connection check for single-signature and dual-signature PDs
- Continuous, dedicated per-port power and current monitoring
- Per-port power policing
- 1MHz I2C compatible serial control interface
- Pin or I2C programmable PD power up to 71.3W
Applications
- VoIP Phones
- WLAN Access Points
- Security Cameras
- Internet Appliances
- POS Terminals
- IEEE 802.3af Compliant PoE Powered Devices
- Non-Compliant, Application Specific Devices
- Higher Power Ethernet Powered Devices
- IP Phone Power Management
- Wireless Access Points
- Pico-base Stations
- Routers
- Pass-through System
- RFID Readers
Q & A
- What is the LTC4291IUF-1#TRPBF used for?
The LTC4291IUF-1#TRPBF is a Power Sourcing Equipment (PSE) controller used in Power over Ethernet (PoE) applications, complying with IEEE 802.3bt Type 3 and 4 standards.
- How many channels does the LTC4291IUF-1#TRPBF support?
The LTC4291IUF-1#TRPBF supports 8 channels.
- What is the operating temperature range of the LTC4291IUF-1#TRPBF?
The operating temperature range is -40°C to 85°C.
- What is the maximum power output per port?
The maximum power output per port is up to 71.3W.
- Does the LTC4291IUF-1#TRPBF provide electrical isolation?
- What communication interface does the LTC4291IUF-1#TRPBF use?
- What types of PoE standards does the LTC4291IUF-1#TRPBF support?
- What is the supply voltage range for the LTC4291IUF-1#TRPBF?
- What is the typical supply current of the LTC4291IUF-1#TRPBF?
- What kind of packaging is available for the LTC4291IUF-1#TRPBF?
