S-80825CNNB-B8KT2U

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The S-80825CNNB-B8KT2U is one of a series of simple supervisory circuits from Intersil, a leading provider of power management ICs. The device is designed to monitor system power, providing a precision power-on reset signal and delayed initialization of system logic. It is commonly used where a high degree of voltage accuracy and reliability is required, such as in power-sensitive industrial equipment, medical equipment, communications systems, and automotive electronics.The S-80825CNNB-B8KT2U is a single-channel low-voltage supervisory circuit designed to monitor an input voltage up to 4.63 V (VINmax). It features a 0.8V fixed reset voltage threshold and a 0.2V accuracy level, along with a precision delay time of up to 700ms that can be adjusted by an external capacitor. The device has an open-drain reset output and a push-pull active-high enable/reset input. The enable/reset input can be used to enable or reset the system or to distinguish between power-on and power-fail events.The S-80825CNNB-B8KT2U operation is based on a comparison of internal references. The device contains two internal reference voltages. A reset reference (Vref) is used as the reset threshold point, while an enable voltage (Vena) is used to determine the enable/reset conditions. The enable/reset input allows external control of the reset output, and is used to indicate a system power-on or power-fail event.When the enable voltage is below the reset voltage or enable input is low, the reset output will be high (assuming V DD is at its specified level). When the enable voltage rises above the reset voltage or enable input is high, the reset output will go low (V DD low or not present). The reset output will remain low until the self-time delay has expired. At the end of the self-time delay, the reset output will be released and go high, as long as the enable voltage remains above the reset voltage and V DD is valid.In summary, the S-80825CNNB-B8KT2U is a precision supervisory device designed for use in power-sensitive applications. It features an accurate 0.8V reset voltage threshold, a 0.2V accuracy level, and a precision delay time that can be adjusted using an external capacitor. With its open-drain reset output and push-pull active-high enable/reset input, this device provides a programmable reset solution that is both reliable and cost-effective.

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