XC6122A742MR-G

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PMIC (Power Management ICs) are integrated circuit chips that regulate, manage and convert the power of an electronic system. Supervisors are a special group of PMICs that provide sophisticated mainly non-discrete monitoring and protection functions. XC6122A742MR-G is a digital CMOS, low voltage supervisor IC. The XC6122A742MR-G belongs to this group and is a member of the XC6122 series.

XC6122A742MR-G Application Field

XC6122A742MR-G is primarily used for Power-on reset, system reset, Watchdog Reset (WDR) in computer and microcontrollers applications in PC, appliances, consumer and industrial electronics and embedded systems. It can also be used for Voltage monitoring and power fail warning. XC6122A742MR-G supervisor IC works as an additional controlling device in every system.

XC6122A742MR-G Working Principle

It is CMOS (Complementary Metal Oxide Semiconductor) digital IC. XC6122A742MR-G is powered by 3V to 5.5V. This IC incorporates a precision temperature-independent voltage reference, an adjustable reset threshold, and a powerful output driver capable of sourcing/ sinking up to 100mA. XC6122A742MR-G also has an active low RES, an active low WDR, an active low power fail, logic level reset pins and restore pins.

This IC provides an active-low reset output and pulls it low on detecting an undervoltage or power failure condition. The active low WDR is used to monitor the system reset for premature trips that would reset the system microprocessor. In this IC, the Power fail comparator monitors the input voltage and the PFI pin is active low if VDD is below preset power fail threshold. RES pin is asserted during power-on reset and WDR are two separate outputs to control reset and WDR respective on the basis of different reset and WDR timeouts.

The restore pin helps to reset the device when VDD exceeds the preset trip threshold. It also has an open-drain output which pulls its output to logic low when VDD is outside a startup voltage range. The XC6122A742MR-G also incorporates a temperature-independent voltage reference that can be used to measure an external voltage to determine the need for reset. It also has an active low ASIC RESET output which latches the output low when VDD is below the preset trip threshold.

Conclusion

The XC6122A742MR-G is a low voltage supervisor IC which is widely used for power-on reset, system reset, watchdog reset, voltage monitoring, and power fail warning. This IC is powered by 3V to 5.5V with an active low RES, an active low WDR, an active low power fail, logic level reset pins and restore pins. The XC6122A742MR-G also has a temperature-independent voltage reference, an adjustable reset threshold and a powerful output driver. It is one of the most versatile and widely used supervisor ICs available on the market.

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