LTC4265IDE#PBF

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The LTC4265IDE#PBF is a power management integrated circuit (PMIC) that falls under the Power Over Ethernet (PoE) controller category. It is made to control power delivery in applications such as Power Over Ethernet (PoE), Uninterruptible Power Supply (UPS) systems, solar-powered backup devices, and remote DC power feeds. The LTC4265IDE#PBF is a full PMIC solution and contains many features, including a PoE Controller with 650V fault protection, a 4MHz DC/DC converter, stepdown converter, switch mode controller, and digital control logic. The chip also contains an internal temperature sensor and a real-time digital clock.

The LTC4265IDE#PBF is specifically designed to supply power to PoE devices, which may include cameras, IP phones, IP cameras, access points, RFID systems, and PC peripherals. The integrated PoE controller is used to detect and control the power available from an 802.3at power adapter. The maximum input voltage of the ADC is limited to 65V, and the maximum output current limit is set to 3.2A. The PoE controller provides over-current and over-voltage protection and requires only one external current sense resistor. The LTC4265IDE#PBF also supports up to three ports of power in a single package.

The integrated 4MHz DC/DC converter has a wide voltage input range of 2.5V to 36V and is ideal for powering a variety of PoE devices. It also provides programmable output voltage and current limit settings for power sequencing and protection. The DC/DC converter is designed to operate in both linear and switch mode operation modes and is capable of providing up to 3A of continuous output current. The DC/DC converter features OC protection, short-circuit detection, and pre-bias start-up technology.

The LTC4265IDE#PBF also features a step-down converter for suppressing ripple noise on the output. The step-down converter has an input voltage range of 8V to 25V and is capable of providing up to 3A output current. The step-down converter includes over-voltage protection and over-temperature protection, as well as a wide variety of control options, including PFI and PRI modes.

The LTC4265IDE#PBF is a highly integrated solution for Power Over Ethernet (PoE) applications, and its features can be easily modified for any specific application by adjusting the internal registers. The PMIC has a wide range of applications and is ideal for applications such as security cameras, VoIP phones, access points, and more.

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