LTC4354IDDB#TRMPBF Integrated Circuits (ICs)

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The LTC4354IDDB#TRMPBF is part of the wide range of power management integrated circuits (PMIC) from Linear Technology, part of the OR Controllers and Ideal Diodes family.

The LTC4354IDDB#TRMPBF is a unique device that combines dual control inputs, ORing MOSFETs, integrated ideal diodes, a thermally enhanced Package, and a high-side current monitor in one convenient package.

The OR Controllers family of PMICs are designed to bridge the gap between the output of two power sources in order to maintain power for an application. This device can be used for basic ORing applications, where two independent power sources are present, as well as more complex ORing systems where the outputs need to be rearranged from one to another in order to take advantage of various power profiles.

Ideal diodes are also included in the LTC4354IDDB#TRMPBF. The two diodes not only protect against overvoltage and reverse current, but they also increase circuit efficiency. In normal operation, the diodes act as usual ideal diodes, allowing a given current to pass up to the maximum specified voltage. When a voltage greater than the maximum is present, either of the two diodes will turn off and limit the current flow, preserving the circuit from possible damage.

The thermally enhanced package of the LTC4354IDDB#TRMPBF includes a power area to firmly attach the MOSFETs and discrete passives, a wide operating temperature range, fast switching capability and improved thermal performance. Together with the integrated ideal diodes and dual control inputs, this device provides a complete ORing system with no additional parts required.

The LTC4354IDDB#TRMPBF also has the added feature of a high-side current monitor. This allows for accurate power measurements that are proportional to the current passing through the MOSFET, thus improving system monitoring, fault protection, and efficiency. The high side current monitor outputs an analog signal which is proportional to the current passing through the device and can also be used to detect overcurrent conditions.

With its wide range of features, the LTC4354IDDB#TRMPBF is an ideal solution for powering applications where multiple power sources are needed. It offers protection against overvoltage and reverse current, thermal performance, and high-side current monitoring in one convenient package.

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