ISL61851CCBZ-T

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The ISL61851CCBZ-T is a monolithic Hot Swap Controller that enables a system load to be powered up or powered down without disrupting the system. The Hot Swap controllers detect undervoltage conditions on the load rail and provide "hot functioning" and "controlled shutdown" of power to the system load. It also provides additional functions such as sequencing and sequencing control, overvoltage protection, over current protection, precharge, soft-start, and power fault indication.

The ISL61851CCBZ-T is an integrated Hot Swap controller. It combines features such as current limit, overvoltage protection, precharge, and adjustable soft-start in a single package. This simplifies the design and eliminates the need for separate Hot Swap controller from the rest of the circuitry. The Hot Swap controllers are able to detect faulty input conditions and protect the system load from potentially damaging conditions.

The ISL61851CCBZ-T is designed for use in high power applications, such as servers and storage systems, where a safe, controlled, and reliable power on/off sequence is required for powering up or powering down the system. The Hot Swap controllers also provide additional features such as precharge, sequencing, and sequencing control to ensure that the system is powered correctly.

The ISL61851CCBZ-T includes an analog current monitor circuit which is able to measure an input current and output the result as an analog voltage. This allows the Hot Swap controllers to provide over current protection by diverting current away from the system load when a fault current is reached. The Hot Swap controllers also provide over voltage protection by diverting current away from the system load when an overvoltage threshold is exceeded.

The ISL61851CCBZ-T also includes adjustable soft-start circuitry which allows the system to slowly power up, thus reducing inrush current and preventing overload conditions. The precharge feature is used to safely charge the capacitive load prior to powering up the system, thus reducing power dissipation. The precharge feature also provides a protection circuit which will disconnect the input from the output if the output voltage exceeds a certain threshold.

The ISL61851CCBZ-T provides indication to the user regarding the power status. The power fault indication pin assures the user that the device is in safe operation when the system is powered up. This pin also enables the user to monitor the system status and maintain proper power sequencing.

The ISL61851CCBZ-T is a high-performance Hot Swap Controller suitable for a variety of high power applications. It provides a simple and effective solution for safe control and reliable power on/off sequencing, as well as robust protection features which enable the system to power up and power down without disruption while keeping the system load safe. With the integrated precharge, over current and over voltage protection, adjustable soft-start and fault indication, the ISL61851CCBZ-T is an ideal choice for Hot Swap solutions.

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