MCP120-460DI/TO

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PMIC - Supervisors

Power Management Integrated Circuit (PMIC) is an integrated circuit responsible for supervising, controlling, and regulating the power electronics within a system. Supervisors are components of PMIC that watches for, and react to, abnormal conditions such as excessive voltage, current, or temperature. There are different types of supervisors specialized for different purposes and MCP120-460DI/TO is one example of supervisors.

MCP120-460DI/TO Application Field

MCP120-460DI/TO is an ideal reset supervisor widely used in modern electronics. It works by setting a voltage threshold at which a reset signal will be sent to devices like microcontroller and microprocessors. This supervisor is ideal for system with low battery or microcontroller in power-down mode, since these devices can be properly reset when power is restored. Moreover, MCP120-460DI/TO can also be used for focusing on in-circuit programming, since it can alert the system when voltage continuously dropped below the threshold. It is also suitable for devices requiring timed reset pulse.

MCP120-460DI/TO Working Principle

The main principle of MCP120-460DI/TO reset supervisors is based on a comparator that watches the supply voltage, and monitors the voltage threshold. It has a reference voltage of 2.7V, and it acts as a threshold when the supply voltage falls below it. When the voltage is below the threshold, the supervisor will output a reset signal to the rest of the system, hinting the device to start reset procedure.

Moreover, MCP120-460DI/TO also includes a reset timer, which is adjustable using external resistors. This timer determines the length of reset pulse and also eliminates false shutdown of the system. The reset can remain active for a minimum of 25ms and maximum of 1s. It also contains a power-on reset circuit that initiates a reset when a power jump occurs, making it ideal for applications in which power often jumps if the device is powered-down.

MCP120-460DI/TO comes with a manual reset input, allowing manual reset to the device by applying a high voltage signal. In this case, the timer will not work since the device will be reset right away. The manual reset also provides an additional layer of protection to the device against voltage drops below the threshold.

MCP120-460DI/TO is also equipped with Brown-out tolerance. It will detect when the supply voltage drops to nearly zero and reset the device accordingly. The reset signal will remain active until the supply voltage is back to its normal state, ensuring no false shutdown and erase of any data stored.

Conclusion

MCP120-460DI/TO is a reset supervisors that is widely used in modern electronics due to its features such as voltage threshold setting, adjustable reset timer, and manual reset input. Its Brown-out tolerance ensures devices will stay protected when the supply voltage suddenly drops. In conclusion, MCP120-460DI/TO is an ideal reset supervisors for most applications.

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