XC6122A445MR-G

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The XC6122A445MR-G is an integrated power supervisory circuit developed by Telcom Semiconductor, suitable for circuits that require an accurate power supply control system. It is a functional device which provides power supply supervision, reset control and power-on reset, and voltage detection functions. With features such as low operating power, low external component count, adjustable reset threshold and reset output time, this IC is the ideal choice for embedded systems.

Description

The XC6122A445MR-G is a 3-pin power supervisor IC capable of providing three distinct power-supply voltage detection capabilities. The device is designed to monitor and detect the system power supply voltage and generate an appropriate reset signal when the current output of the system exceeds a user-defined threshold level. This makes it capable of protecting systems from operating outside of their normal operating parameters. It also contains a power-on reset circuit which generates an assertion pulse on the reset line when power is first applied.

The XC6122A445MR-G has an adjustable reset threshold voltage range between 2.1V and 4.5V, with the reset accuracy being approximately ±0.3V. The reset output time is adjustable between 0.7 ms and 1.3 ms. The power supply voltage range is between 2V and 6V and it can operate at a temperature range of -30°C to +110°C.

Features and Benefits

• Low operating supply voltage
• Low external component count
• Adjustable reset threshold and reset output time
• High accuracy and low power consumption
• Output voltage monitoring
• Functional device for power supply supervision and POR control

Applications

The XC6122A445MR-G is suitable for use in a range of applications from portable battery powered systems and automotive electronics to computers, gaming consoles and other embedded systems. The IC can be used to protect the system from an accidental output voltage overshoot and reset the system when the current output exceeds a set level. Additionally, it can be used to detect an unexpected power supply failure or out of range power supply voltage and reset the system. Other applications include monitoring on board DC-DC and AC-DC power supplies as well as battery management applications.

Working Principle

The XC6122A445MR-G is designed to monitor and detect changes in the system power supply voltage and generate an appropriate reset signal when the output voltage of the system exceeds the user-defined threshold level. On power up, the reset output time is internally set and the reset threshold voltage is adjustable using an external resistor. When the output voltage of the system exceeds the reset threshold, the reset output is asserted and the system is reset. After resetting the system, the reset output is deasserted, allowing the system to resume operation.

The XC6122A445MR-G also contains a Power-On Reset (POR) circuit which monitors the power supply voltage and provides an assertion pulse on the reset line when power is first supplied. This helps to ensure that the system always starts from a known state and helps prevent any corruption of system data or abnormal system responses.

Conclusion

The XC6122A445MR-G is an ideal power monitoring and reset control IC with a wide range of applications. It combines a low operating voltage, adjustable reset threshold and output time, and high accuracy, making it the perfect choice for any embedded system. It is capable of protecting systems from operating outside of their normal operating parameters by detecting changes in the system power supply voltage and generating an appropriate reset signal, helping to keep the system running smoothly and safely.

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