X5328PZ-2.7

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Power supervision integrated circuits (ICs) are an essential component of many high-end and industrial products today. The X5328PZ-2.7 from Xicor is a programmable multi-channel supervisor, POR (power-on reset), monitor and voltage detector IC. It is commonly used in desktop, laptop, and server systems as well as in industrial applications.

The X5328PZ-2.7 can monitor up to eight power supply voltages and generate reset signals when any of the voltages exceed or drop below their respective user-specified thresholds. It can also detect power-supply looses and brown-outs, which helps the system recover from such events while ensuring safe operation. It integrates a POR block, which can provide a soft power on reset. It also includes adjustable reset-delay timers that ensure proper sequencing of the power rails at start-up.

The X5328PZ-2.7 monitor is based on a precision bandgap reference and an integrated comparator block. It can compare an arbitrary set of supply voltages with a programmable voltage threshold on up to eight independent input channels. Depending on the set up of the device, it can detect both over and under voltage conditions on the monitored rails. The X5328PZ-2.7 also features an adjustable voltage divider for use with low voltage rails and can be programmed to eliminate hysteresis for noise immunity.

The reset signal of the X5328PZ-2.7 is generated by an on-chip pulse-generator circuit. The reset duration and minimum reset pulse width can be programmably set from 2 to 16msec. The reset signal is then further filtered using an adjustable delay circuit to ensure that the reset is activated only after the voltage has exceeded or dropped below the programmed threshold for the desired duration.

The X5328PZ-2.7 also integrates two hardware controlled power-on reset circuits (POR), which allow the non-volatile storage of system critical configuration parameters. The first POR block provides a signal when power is applied to the system and the second POR block provides a signal when the voltage drops below a pre-programmed threshold. These POR circuits can be configured to generate single or dual pulse reset signals.

The X5328PZ-2.7 is a multi-voltage monitor and reset generator with a high level of integration. It is designed to detect overvoltage, undervoltage, and brownouts and can serve as a power supply monitoring and reset circuit for high-end and industrial systems. It can be used to ensure the safe operation of the system and is an ideal solution for applications where monitoring and reset functionality is required.

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