ISL61853LCRZ

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The ISL61853LCRZ, Hot Swap Controllers is a voltage-controlle regulator for the protection and power management of systems that contain circuits or supplies sensitive to high inrush current or transients. This device is capable of protecting sensitive circuits by controlling power-up sequences, and limiting inrush current up to 1.2A. ISL61853LCRZ ensures a clean and reliable system power-up with programmable power on/off delay times, a wide range of voltage sense adjacent to the load, and adjustable inrush current. The ISL61853LCRZ also provides a number of power management features to improve the performance and reduce the total system cost.

Application Field

ISL61853LCRZ hot swap controllers provide ideal solutions for telecom, netcom, industrial and computing hot swap applications. The low RDSON fets and integrated circuits are perfect for controlling inrush current and minimizing external component count, thus saving cost and time. It also features configurable soft start, programmable OCP levels, and an adjustable housekeeping current. Besides, the ISL61853LCRZ hot swap controllers offer over voltage, over current, and short circuit protections, providing complete protection for the system.

Working Principle

ISL61853LCRZ\'s working principle is based on the control of inrush current. This device uses an internal MOSFET and sense resistor to sense current load and adjust it accordingly. It can also sense output voltage, adjust the inrush current accordingly, and provide a programmable soft start with power-up and power-down delay times. In addition, the device also has adjustable OVP, OCP, and OCP hysteresis. ISL61853LCRZ also has a sense-and-control MOSFET, a current sense amplifier, an adjustable on/off delay, an adjustable power output, a power-on/off control block, a power-up/down control block, and a housekeeping current block.

Overall, ISL61853LCRZ is an ideal solution for hot swap applications. It integrates a low RDSON FET and integrated circuits to minimize external component count, thus saving cost and time. This device provides adjustable inrush current, programmable soft start, adjustable OCP levels and housekeeping current, and overvoltage, over current and short circuit protections. It works based on the control of inrush current by sensing the current load and adjusting it accordingly, and provides an adjustable on/off delay and adjustable power output.

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