LTC4270AIUKG

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The LTC4270AIUKG is an integrated power management controller specifically designed for Power-over-Ethernet (PoE) applications. It combines the functionality of a buck regulator controller, a bidirectional current-limited high-side MOSFET, and a low-side MOSFET controller with I2C-programmable current limits. This device is designed to provide the intermediate-level power supply needed to power IEEE 802.3af-compliant Power Sourcing Equipment (PSE) and Powered Devices (PDs).

The LTC4270AIUKG is a Power over Ethernet (PoE) controller that supports up to 25.5 W of intermediate-level power for Power Sourcing Equipment (PSE) and Powered Devices (PDs) in accordance with IEEE 802.3af standards. This device integrates an I2C-programmable current limit, a buck regulator controller, a bidirectional current-limited high-side MOSFET, and a low-side MOSFET controller onto a single chip. The I2C programmable current limit allows user-configurable current limits of up to 25.5 W. It also features current level control and active current sharing among multiple ports.

The LTC4270AIUKG provides an efficient solution for implementing Power over Ethernet (PoE) applications. The integrated buck regulator controller allows the use of switch-mode power supplies instead of linear regulators, providing high efficiency and small size. It supports dynamic voltage scaling to allow systems to adapt to changing supply voltage and varying system load conditions. It also offers low-noise operation and thermal shutoff protection for increased safety. The bidirectional current-limited MOSFETs enable battery charging, as well as protected current-limited powering of PDs.

The LTC4270AIUKG is suitable for a wide range of PoE applications, including access points, medical equipment, VOIP phones, and security cameras. It is a complete, single-chip solution that eliminates the need for complex discrete and multi-chip PoE circuits, making it ideal for space-constrained applications.

In summary, the LTC4270AIUKG is an integrated power management controller designed specifically for Power-over-Ethernet (PoE) applications. It combines the functionality of a buck regulator controller, a bidirectional current-limited high-side MOSFET, and a low-side MOSFET controller with I2C-programmable current limits. It provides an efficient solution for PoE applications and is suitable for a wide range of applications, including access points, medical equipment, VOIP phones, and security cameras.

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