BU4920FVE-TR

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Power management integrated circuits (PMICs) are electronic devices that are becoming increasingly popular, as electronic systems become more complex and their power consumption increases. PMICs are typically used to provide regulated power to any application and are often required, in addition to the main power supply. Supervisors are a type of PMICs that are used to monitor a specific parameter of an application, such as its power supply. The BU4920FVE-TR is a supervisor IC used for voltage supervision in systems such as 3V and 5V systems, with an operating voltage range of 1.8V to 5.5V.

The BU4920FVE-TR has a wide range of application fields. This supervisor IC can be used in varied types of system design, including automotive, consumer electronics, enterprise, healthcare, industrial and sensing applications. Automotive systems use the BU4920FVE-TR as it can accurately manage voltage regulation in systems with tight supply voltage tolerances. Consumer electronics also find the IC useful, due to its low power consumption, making it ideal for applications such as mobile phones and other low-power devices. Enterprise and healthcare systems use the IC to ensure accurate voltage stabilization operations, while industrial systems can utilize it as well, given that it can operate in wide temperature ranges (from -40°C to 125°C). Lastly, it can be utilized in sensor systems, such as position and displacement sensors, due to its micro-power operation and extremely high accuracy.

The BU4920FVE-TR’s working principle is based on a differential amplifier connected to two reference resistors, with the voltage monitored by two comparators. The voltage between the two resistors is monitored by two open-drain outputs, which are pulled high when the voltage is within pre-determined ranges. If the voltage falls outside of the pre-determined ranges, the signals at the outputs become low, indicating an alarm state. Additionally, whenever there is a power outage, these outputs are pulled low, which allows for backup measures to be taken.

The BU4920FVE-TR also has a few other features. Firstly, it consumes very little power since its supply current is just 0.5µA. Secondly, it has an extremely high accuracy, with an error rate of only ±0.2%. Thirdly, it has an build-in hysteresis voltage to prevent erroneous outputs from parts with wide temperature variations, and finally, its two open-drain outputs are pulled low whenever there is a power outage or other external disturbances. These features make the BU4920FVE-TR an ideal choice for a wide variety of applications, where accuracy and flexibility are paramount.

In summary, the BU4920FVE-TR is a versatile supervisor IC, with a wide range of applications such as automotive, consumer electronics, enterprise and healthcare, industrial and sensing applications. Its working principle is based on a differential amplifier connected to two reference resistors. It features low power consumption, high accuracy, and an integrated hysteresis voltage to prevent erroneous output. These features make the BU4920FVE-TR an ideal choice for any application requiring voltage regulation and accuracy.

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