XC61GC2802HR-G

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The XC61GC2802HR-G is a Supervisor from Ricoh, which belongs to the PMIC - Supervisors category. This Supervisor consists of two pins, and it is designed for application to a variety of system products, including tablets, PCs, and mobile phones. In this article, we will discuss the application field and working principle of XC61GC2802HR-G.

The XC61GC2802HR-G Supervisor is a current-limited reset monitoring circuit which is useful for preventing the system from malfunctioning or resetting due to power supply noise. This supervisor can be applied to systems that have an input voltage range of 1.9-5.5V. It has a trigger voltage of 1.8V ± 0.15V, and a reset output (RESOUT) delay period from 0.9 ms to 35 ms when a WDJ is written to the Power Control Data Register (PCDR).

This device is designed to stabilize power supply architecture and improve system reliability. It has an undervoltage lockout circuit with an external voltage reference voltage. The application of this device helps to reduce the number of components needed which makes the design simpler and more reliable.

The working principle of XC61GC2802HR-G Supervisor consists of a power supply-stabilizing circuit that prevents the system from resetting due to power supply noise. This circuit is composed of a voltage sensing circuit, an undervoltage lockout circuit, and a threshold and delay circuit.

The voltage sensing circuit senses the power supply voltage, and when it drops below the trigger voltage (1.8V ± 0.15V), the circuit outputs a low level signal.The undervoltage lockout circuit is also enabled when the voltage drops below the threshold voltage. This prevents the reset output from going low until the voltage rises above the threshold voltage.

The threshold and delay circuit controls the voltage comparator and allows for an adjustable reset delay of up to 35 ms when incoming voltage is applied. This delay ensures the system will not respond too quickly to fast decreases in voltage and allows the system time to maintain the reset signal until power is restored.

The XC61GC2802HR-G Supervisor is an ideal device for applications requiring low power consumption, high reliability and accuracy. It is highly suitable for protecting system components by preventing voltage drops and resetting due to power supply noise. This device provides an efficient solution for applications with a wide input voltage range, allowing designers to easily integrate it into their designs.

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