XC6122A449MR-G

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The XC6122A449MR-G is part of the XC6122 supervisory circuit (SVC) family specifically designed to monitor microprocessor and power management applications. The SVC family includes a wide range of voltage detectors, window detectors and reset generators to suit application needs. The XC6122A449MR-G is a Dual Output Voltage Detector with Reset Output and a Bipolar Threshold Voltage Detector.

The XC6122A449MR-G is used to detect two voltage levels, one higher and one lower, with each level having its own defined threshold voltage. It has two single-input/single-output voltage regulator compartments and a bi-polar reset output (RESETOUT), designed to keep the power supply stable by controlling the reset signal between the upper and lower threshold selections. Its detection levels are adjustable and can be adjusted from an external voltage divider.

The XC6122A449MR-G features a circuit detection range of 2.9V to 5.5V. Its reset output can be configured as active low, active high, or open drain, and its hysteresis is adjustable from 200mV to 250mV. It also includes protection circuitry against reverse voltage, overvoltage and overcurrent.

XC6122A449MR-G is suitable for applications requiring dual reset and two output voltage detections such as microprocessors and power management ICs. It also protects these components from power supply susceptibility due to short or long power interruptions and incorrect power-up sequences.

The XC6122A449MR-G is an output voltage detector which works by detecting and responding to input voltages within a defined threshold range. When the voltage exceeds or drops below the upper and lower threshold, the XC6122A449MR-G will generate a reset signal to the microprocessor or power management IC. The XC6122A449MR-G can be configured for both active high and active low RESETOUT features. The active high RESETOUT will generate a high signal when the monitored voltage exceeds the upper threshold and a low signal when the monitored voltage drops below the lower threshold. The active low RESETOUT will generate a low signal when the monitored voltage exceeds the upper threshold and a high signal when the monitored voltage drops below the lower threshold.

Additionally, the XC6122A449MR-G includes an adjustable hysteresis value. This value can be adjusted with an external resistor. Typically, the hysteresis is used to define the input voltage range between the upper and lower thresholds. The hysteresis value is generally set in such a way that the reset output signal will be asserted only if the input voltage remains out of range for the chosen period of time. This prevent false triggering of the reset signal in the applications with the input signal that rapidly and frequently changes.

The XC6122A449MR-G is an ideal solution for microprocessor and power management applications requiring dual reset and two output voltage detections. It provides a stable power supply environment by generating reset signals when the monitored voltage exceeds or drops below the specified threshold level. The configurable reset output as well as adjustable hysteresis value offer greater flexibility to meet the varying application needs.

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