XC6122A420ER-G

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PMIC - Supervisors: XC6122A420ER-G Application Field and Working Principle

PMIC, or Power Management Integrated Circuit, is a device that helps control the power requirements of electronic circuits. It includes power regulators, voltage control devices, switched power interfaces, integrated thermal protection, and other miscellaneous circuits, such as Supervisors.

Supervisors are a type of PMIC that monitor the status and health of an electronic circuit, providing protection against under-voltage, over-voltage, and in some cases, over current, over temperature, and reverse polarity.

One such example of a Supervisor is the XC6122A420ER-G by ON Semiconductor. This device can provide all necessary protection to a portable or industrial-grade circuit.

Application Field: The XC6122A420ER-G is designed to equip circuit designers with simple power monitoring in both portable and industrial settings. It can be used to protect sensitive components against overload, excessive current, and transient voltage. In portable settings, the device measures the system voltage and communicates this information to the MCU for battery life optimization.

Working Principle: The XC6122A420ER-G Supervisor monitors and regulates voltage levels, with an adjustable sensitivity range from 3V to 7.4V. It also has a reset output that can be used to inform the MCU of any current drops or spikes below the supply voltage. It also features a 3.3V output that can be used to provide digital power for the MCU.

The device is protected against overload, excessive current, and transient voltage by a multiplexer and delayed reset timer. Additionally, it has an internal voltage detector that can reset the chip when the supply voltage drops too low.

The device is programmed through an I2C/SMBus/PMBus interface, where the voltages, timeouts, and overrides can all be configured and adjusted.

Overall, the XC6122A420ER-G is an ideal tool for circuit designers and engineers looking to monitor, protect, and adjust the power of their circuits. With its simple programming and adjustable sensitivity range, the Supervisor provides reliable protection without the hassle of complex circuitry.

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