BU4844FVE-TR

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The BU4844FVE-TR is among the first generations of PMIC (Power Management IC) Supervisors designed by ROHM Semiconductor for automotive, consumer, and industrial applications. The device was released to the public in 2012 and has since become a popular choice for engineers looking to add power control and system stability to their products. It is an integrated solution that combines multiple power management features in a single package, reducing development costs and saving valuable design space in the process.

This particular PMIC fusion contains two built-in supervisory blocks, which are designed to protect the system from undesired fault conditions. The two blocks are the Under Voltage Lockout (UVLO) and the Power On Reset (POR). The UVLO ensures a safe system by monitoring and controlling the supply voltage. If the voltage drops below the preset threshold, the UVLO quickly shuts off the power supply to prevent the device from further damage. At the same time, it also prevents the supply voltage from rising too high, which and can lead to abnormal conditions within the system.

As for the POR, it is responsible for generating an asynchronous reset signal to the system in the event of power failure. This feature guards against device errors by resetting the CPU, memory, and other components in the system back to its initial state. Furthermore, the POR’s accurate reset threshold ensures that the system is reset even in the presence of low-voltage dips or spikes.

In addition to its supervisory functions, the BU4844FVE-TR also provides some extra features such as thermal protection and over-voltage protection. The thermal protection circuit has a temperature cut-off point of about 120°C, which will immediately disable the device should the temperature exceed that value. The over-voltage circuit on the other hand, is designed to reduce the load on the system and protect it from damage due to excessive voltage.

The BU4844FVE-TR is an ideal solution for system designers looking to provide their products with additional power protection and prevention of faulty conditions. It is also cost-effective and low in power, giving designers maximum flexibility with their design needs without sacrificing performance. The combination of its power and protection makes the BU4844FVE-TR a great choice for PMIC Supervisors.

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