Maxim Integrated MAX5940BESA: Ethernet Power Sourcing Equipment Interface

The Maxim Integrated MAX5940BESA is a sophisticated interface IC designed for Power-over-Ethernet (PoE) applications. As a crucial component in Power Sourcing Equipment (PSE), the MAX5940BESA facilitates the delivery of power over Ethernet networks, allowing devices such as IP cameras, wireless access points, and VoIP phones to receive power and data through a single Ethernet cable. This integrated circuit simplifies the design and deployment of PSE by integrating essential features for PoE operation.

Key Features

• IEEE 802.3af Compliance: The MAX5940BESA adheres to the IEEE 802.3af standard, ensuring compatibility with a wide range of powered devices (PDs).
• Integrated MOSFET: It includes an internal MOSFET, which reduces external component count and simplifies the design process.
• Programmable Current Limit: Designers can set the current limit to match the requirements of the specific application, providing flexibility and protection for connected devices.
• Thermal Shutdown: The device features thermal shutdown protection that safeguards the IC from overheating, enhancing system reliability.
• Diagnostic Features: Built-in diagnostic capabilities allow for real-time monitoring of the system, including detection of open and short circuits, ensuring safe and efficient operation.

Applications

The MAX5940BESA is well-suited for a variety of applications within the realm of network power delivery. It is commonly used in:

• Network Switches and Routers
• IP Surveillance Cameras
• Wireless Access Points
• VoIP Phone Systems
• Network-Attached Storage Devices

With its compact SOIC-8 package, the MAX5940BESA is designed for space-constrained applications, offering a minimal footprint without compromising on performance. Its robust design and advanced features make it an ideal choice for system designers looking to implement PoE capabilities into their network infrastructure.

Ordering Information: The MAX5940BESA is available in an 8-pin SOIC package and is specified over the -40°C to +85°C extended temperature range.