ISL61852IIRZ-T

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Power Management Integrated Circuits (PMICs) are essential components within many systems, providing the means to maintain a voltage supply or sequencing the power. In devices where the safe and reliable operation of other system components is of paramount importance, a PMIC is essential. Hot Swap Controllers have been developed as part of PMICs, to provide electronics systems with a reliable way to introduce and safely remove components from a power supply.The ISL61852IIRZ-T from Intersil is a Hot Swap MOSFET phase-mode controller for load current adjustable protection. It provides over-current protection (OCP) and over-temperature protection (OTP). This device is used to provide protection against excessive current flow, and ensures the safe addition or removal of electronics components from the power supply. It works by using a dedicated MOSFET to place the protected load into a known safe state when the current exceeds the preset over-current limit. This device monitors these parameters and is designed to detect any sustained change in voltage. If a voltage level outside the allowed range is detected it will switch off the protected MOSFET. This particular device is optimised for phase-mode applications between 6V-18V.

The ISL61852IIRZ-T is a single package Hot-Swap controller that has a wide range of applications. It is specifically designed for applications where the load current is adjustable and variable, such as telecommunications, medical, industrial and automotive systems. This device is capable of supporting a wide range of voltage rails and has a large current limit up to 10A, making it ideal for high-current operations. It has a small footprint (8-lead SOT-23 and 3mm2 DFN) and operates over the temperature range of –40°C to +125°C, making it appropriate for applications where high-reliability is required and tight space is available.

As a Hot-Swap controller, the ISL61852IIRZ-T helps in the safe integration and disconnection of components onto the power supply. The over-current and over-temperature protections are designed to enable the removal of faulty components from the system quickly, reducing the risk of any damage or instability to the system. The ISL61852IIRZ-T provides a number of other features, such as wide input voltage (6V-18V), adjustable output voltage, programmable under-voltage lockout (UVLO) and programmable over-voltage protection (OVP).The working principle behind the ISL61852IIRZ-T is simple. When the load current is above the preset for the OCP, the device will switch off the load, thus protecting the system. Similarly, if the temperature of the device is above the OTP, the device will switch off the load. If a voltage outside the allowed range is detected, the device will switch off the MOSFET in order to protect the system. The ISL61852IIRZ-T is an ideal Hot Swap Controller for load current adjustable protection for a broad range of applications, offering reliable operation and protection against dangerous over-current, over-temperature and over-voltage conditions.

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