ADM1075-2ARUZ-RL7

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The ADM1075-2ARUZ-RL7 is a integrated hot swap power controller designed to protect systems from inrush current and damage due to disconnection or insertion of faulty or improperly rated plugged-in components. Hot swap controllers provide protection during replaceable or hot-pluggable system installations, regions of large current draw, or when replacing expensive components without impedance.

The ADM1075-2ARUZ-RL7 enables hot swapped components to switch without damaging other components, or the system itself, despite voltage differences between the components. By using several features in one integrated controller, like over voltage protection, gate drive, and slew rate control, the ADM1075-2ARUZ-RL7 reduces the cost and board complexity of a hot swap system.

The ADM1075-2ARUZ-RL7 is a Buck Step-down controller that implements a two-phase architecture for improved transient response and power efficiency. It operates in current mode control and uses FRM (Frequency Regulation Mode), to provide smooth, accurate output regulation even in transient conditions. The controller regulates the output voltage by closing the external power MOSFETs for a fixed period of time, which is proportional to the desired output voltage.

The ADM1075-2ARUZ-RL7 includes many protective features, such as inrush control, power MOSFET over current limit, input over voltage protection, junction temperature detection, RP2 or RP3K under-voltage lockout (UVLO) protection, as well as output over voltage protection. It also features integrated adjustable soft start, allowing regulation before the full in-rush limit current is reached, while providing external choice of internal UVLO.

The ADM1075-2ARUZ-RL7 is suitable for hot plugging applications and can remain in an active state and maintain a regulated output voltage even in the absence of the four phases being activated. Its wide VIN range of 4.75V to 17V and four independent phases making it suitable for a wide variety of applications.

Particularly, it is designed for applications such as hot pluggable power supplies, telecom power supplies, air conditioners, frequency converters, server power supplies, ASIC power supplies, industrial power supplies, redundant power supplies and adjustable power supplies.

In summary, the ADM1075-2ARUZ-RL7 is a hot swap controller performing advanced power protection, increasing system robustness. It is a high integration low-cost controller that allows designers to quickly build hot swap systems. It is suitable for hot plugging applications requiring a wide VIN range and wide output voltage modes, in order to control and protect ICs.

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