ADIMAX5969AETB+T
Overview
The MAX5969AETB+T is a high-performance Power-over-Ethernet (PoE) Powered Device (PD) controller fully compliant with IEEE 802.3at (PoE+) and 802.3af standards. It integrates a complete interface for PD systems, including 2-event classification, a power MOSFET, and current-limiting circuitry to simplify power management in networked hardware. This controller is designed to handle up to 25.5W of power while maintaining a small footprint with its 3x3mm 10-pin TDFN package.
Why Choose This Part
This controller features a 100V absolute maximum input rating, providing robust protection against line transients. It includes an integrated power MOSFET and features a 180mA maximum inrush current limit to prevent power-up glitches on the network. The MAX5969A variant specifically provides a legacy UVLO threshold of 36V, ensuring compatibility with various power sourcing equipment environments.
Applications
Key Specifications
Getting Started
Designers should refer to the MAX5969A evaluation kit (MAX5969AEVKIT#) for a reference layout and performance validation. Ensure the exposed pad of the TDFN package is soldered to a large ground plane to manage thermal dissipation during high-power 25.5W operation. The device requires minimal external components, primarily requiring a bypass capacitor and an external wall-adapter sense resistor if using auxiliary power.
