MIC803-26D2VM3-TR

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PMIC, or power management integrated circuits, are a broad family of integrated circuits that manage the power requirements of electronic circuits and components. An example of a PMIC is the MIC803-26D2VM3-TR, which is used to protect and supervise a microcontroller from overvoltage and brown-out conditions. This article will discuss the application field and working principle of the MIC803-26D2VM3-TR.

Application Field of the MIC803-26D2VM3-TR

The MIC803-26D2VM3-TR is designed to protect and supervise microcontrollers from extreme voltages, which could lead to damage. It can be used in any microcontroller-based system that requires the protection of a voltage supervisor like the MIC803-26D2VM3-TR, such as automotive electrical systems, power conversion systems, and adapters. This device also provides supervised power on reset (POR) and brown-out reset (BOR) monitoring to ensure that the microcontroller is operating within its safe operating limits.

Working Principle of the MIC803-26D2VM3-TR

The MIC803-26D2VM3-TR works by monitoring the system voltage and comparing it to the internal voltage thresholds. When the system voltage exceeds the safe operating range, the device shuts down to protect the microcontroller from damage. It does this by providing an active-low power on reset (POR) signal, or a greater-than-threshold reset signal, to the microcontroller. Additionally, the device provides an active-low brown-out reset (BOR) signal to the microcontroller when the system voltage drops below a certain, adjustable threshold.

When the system voltage is within the safe operating range, the MIC803-26D2VM3-TR will not trigger either the POR or BOR signals. In addition, the device allows for manual resetting of the microcontroller, as well as output enable control, allowing the user to manually enable and disable the output of the device in order to control the reset of the microcontroller.

The MIC803-26D2VM3-TR also provides additional protection to the system by providing a preset over-voltage shutoff (OVS) threshold that will trigger an active-low output if the system voltage exceeds the preset OVS threshold. This output can be used to control external circuits, such as bypasses or power switches, in order to protect the system from over-voltage conditions.

The MIC803-26D2VM3-TR also features two independent supply rails, a 3V and a 5V, which can be used to monitor the system voltage. This allows the device to monitor two different voltages in the system, for example a 3.3V microcontroller and a 5V power circuit, and protect both of them from extreme voltages. Additionally, the MIC803-26D2VM3-TR has an input voltage range of 1.8V to 6V, allowing the device to be used in a variety of different applications.

Conclusion

The MIC803-26D2VM3-TR is an excellent voltage supervisor IC that can be used to protect and supervise a microcontroller from overvoltage and brown-out conditions. It provides an active-low power on reset (POR) and brown-out reset (BOR) signals, has two independent supply rails, and has an input voltage range of 1.8V to 6V. The device can be used in a variety of different microcontroller-based applications, such as automotive electrical systems, power conversion systems, and adapters, and provides a reliable way to protect a system from extreme voltages.

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