LTC4290BIUJ#TRPBF

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The LTC4290BIUJ#TRPBF is a leading power management integrated circuit (PMIC) that integrates multiple functions in a single chip. It is part of a range of sophisticated PMICs from Linear Technology that provide extensive power management capabilities for modern mobile devices. The LTC4290BIUJ#TRPBF is designed specifically for power over Ethernet (PoE) applications. It provides high-efficiency voltage conversion, sequencing, monitoring, and control for PoE-enabled systems.

The LTC4290BIUJ#TRPBF is used in Power Over Ethernet applications to provide power to powered devices (PDs) such as IP phones, wireless access points, and surveillance cameras. It optimizes PD power consumption while meeting IEEE 802.3af and 802.3at power standards. It also helps protect connected network devices against surges, short circuits, and over-voltage conditions.

The PMIC has a Hot SwapTM system which can safely enable and disable individual ports. This feature of the LTC4290BIUJ#TRPBF allows for up to 48V of continuous operation under controlled conditions. It also ensures high PoE port-level reliability in a wide range of PDs.

The LTC4290BIUJ#TRPBF has a low-pin count to reduce board space requirements and is capable of providing up to 32V DC power output. Its integrated voltage gain block provides precision voltage feedback and direct control of the input voltage. Its advanced features such as synchronous rectification and active power compensation further helps to improve efficiency in applications. It also features an integrated PMBus interface to provide a programmable power-level control.

The component includes various external components, including an isolated transformer, connecting cables, and three external resistors. This allows the component to provide power directly from the Ethernet source. The component is well-suited for applications where high power over Ethernet is required, such as security cameras, wireless access points, IP phones, and more.

In summary, the LTC4290BIUJ#TRPBF is a sophisticated PMIC designed specifically for Power Over Ethernet applications. It integrates a Hot SwapTM system, low-pin count, and programmable power-level control, making it ideal for a wide range of PoE devices. It also provides excellent power conversion, sequencing, monitoring, and protection capabilities and reduces board space requirements with an integrated design.

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