Product Overview: LTC4269IDKD-1#PBF

The LTC4269IDKD-1#PBF is a cutting-edge integrated circuit from Linear Technology, designed to facilitate Power over Ethernet (PoE) applications. It is a highly efficient, IEEE 802.3af compliant Power over Ethernet (PoE) interface controller that is equipped with a synchronous, forward converter DC/DC controller. This advanced component is suited for applications that require reliable power delivery and management over Ethernet networking cables, enabling the powering of devices such as IP cameras, wireless access points, and VoIP phones directly through the network cable, eliminating the need for additional power supplies.

This product is built with an array of features that ensure efficient and secure power delivery. It includes a signature resistor interface with a programmable classification current for the precise detection and classification of PoE devices. The LTC4269IDKD-1#PBF supports a wide input voltage range, which is critical for handling the varying power levels over Ethernet cabling. Moreover, its integrated synchronous rectifier enhances efficiency, especially important for high power applications.

The LTC4269IDKD-1#PBF also boasts a robust thermal performance, thanks to its Hot Swap™ capability that allows for safe insertion and removal from a live PoE network. The thermal foldback feature ensures the protection of the IC under extreme thermal conditions by reducing power dissipation. This product comes in a compact, low-profile (4mm × 5mm) DFN package, making it suitable for space-constrained applications.

For designers and engineers, the LTC4269IDKD-1#PBF provides an all-in-one solution that simplifies the design of PoE-powered devices. It integrates a high-performance switching regulator with advanced protection features, such as over-current limiting, under-voltage lockout, and thermal shutdown, to ensure reliable operation under a wide range of conditions.

Whether for enterprise networking equipment or industrial automation, the LTC4269IDKD-1#PBF from Linear Technology represents a versatile and reliable choice for powering devices over Ethernet infrastructure, streamlining installation and reducing overall system costs.