ISL61852EIRZ

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The ISL61852EIRZ is part of a family of hot swap controllers in PMIC (Power Management Integrated Circuits) category. It is a high efficiency, cost-effective circuit that provides load protection and power sequencing both during power failure and power on-off events, while allowing a hot configuration of the power rail. The ISL61852EIRZ is designed to control the powering of server hot-plug and other highload applications without the need for external components.

The ISL61852EIRZ utilizes an integrated buck regulator with an adjustable output voltage. It also features an input UVLO (under-voltage lockout) to protect against voltage drops, with 6 independent power sequencing outputs along with integrated current sensing capabilities. It also features integrated over-temperature and over-voltage protection, and can provide up to 10A of output current. The device can be used for voltage sequencing for microcontrollers, FPGAs and other peripherals.

The core principle of the ISL61852EIRZ is to allow full load disconnection and load re-connection while a system is still powered on. This is done by creating a delay between the system power-on and the output of the ISL61852EIRZ. The buck regulator is configured to begin conversion after the delay, allowing the system to ramp-up to a stable voltage. This approach eliminates the need for externally provided systems to protect against in-rush current and gradual re-connection.

The ISL61852EIRZ can be set up to perform up to eight user-configured power-specific actions that can be customized for specific applications. These actions could be delays for power-on and power-off, as well as enable or disable specific outputs. This helps reduce the number of external components needed to maintain control and protection of the specific application. The device also includes an additional power-off delay allowing external monitors to reliably detect and manage system power levels.

The ISL61852EIRZ is primarily used in server hot plugging solutions where it can help provide load protection and power sequencing. It also finds applications in other high-load peripherals, such as motor control, switching and power conditioning circuits. This device can save on cost and space by eliminating the need for external components, and its enhanced design features enable the device to withstand extreme environmental conditions.

In conclusion, the ISL61852EIRZ is a power management integrated circuit that is designed for use in hot-swap applications. It features an adjustable buck regulator, integrated current sensing and a variety of protection features. It can provide up to 10A of output current, and has user-configurable power-specific actions to simplify component selection. The device can offer increased efficiency, cost savings and space savings by eliminating the need for external components. It is ideal for high load applications in server hot plugging solutions and other related power conditioning circuits.

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