MCP130-475FI/TO

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PMIC stands for Power Management Integrated Circuit, and Supervisors are circuits within this category used to protect microcontrollers from power issues such as overvoltage, undervoltage and overcurrent. The MCP130-475FI/TO is one such supervisor, manufactured by Microchip Technologies, and its applications and working principle are described in this paper.

The MCP130-475FI/TO is a 4.75V pushbutton reset supervisor that is able to reset a microcontroller in the event of power transients. The device has an open drain N-MOS output which keeps the reset signal low unless an extreme overvoltage condition or low voltage condition is detected. The MCP130-475FI/TO is a 4-pin SOT-23 package, with the following pins: VDD, RESET, Threshold Voltage and Ground. The device can be adapted for automatic operation via the RESET input and is available in a wide range of voltages.

The MCP130-475FI/TO is used in a variety of applications, such as automotive, industrial and consumer applications. In automotive applications, this device is used as a replacement for traditional mechanical reset circuits. It eliminates the need for manual reset and ensures that the microcontroller will reset quickly when an overvoltage condition is detected. For industrial applications, the MCP130-475FI/TO can be used to provide reset protection in 24V power supply systems while consuming very little power. The device is also used in consumer applications, where it helps to protect against overvoltage conditions and limit the amount of power drawn when there is an overvoltage condition.

The operating principle of the MCP130-475FI/TO is quite straightforward. It is a voltage comparator with a voltage reference, where the voltage reference is the Threshold Voltage pin. The reference voltage is set to the desired reset level, and the voltage at the VDD pin is compared to the reference and if the voltage is higher than the threshold, the reset output is asserted and the microcontroller is reset. The reset output is an open drain, meaning that it can be connected to multiple outputs, each output connected to the corresponding microcontroller reset line.

The MCP130-475FI/TO is a reliable supervisor device and is suitable for a wide range of applications. It offers protection against overvoltage, undervoltage and overcurrent, and is available in a wide range of voltages. It also has a low power consumption and is able to reset the microcontroller quickly and accurately. The device is a great solution for protecting a microcontroller from power issues that could cause it to malfunction or become permanently damaged.

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