BU4225FVE-TR Integrated Circuits (ICs)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Power Management ICs (PMICs) are integrated circuits that are utilized in a variety of applications in order to maintain a stable voltage level and power efficiency. Often used to extend battery life, they are intended to protect a system in case of a fault or overload situation. PMICs play a vital role in the reliable performance of circuit applications.

Within the broad category of PMICs are a sub-category of chips known as supervisors or voltage monitors. Supervisors, such as the uni/bi-directional BU4225FVE-TR, provide voltage monitoring and protection for time-sensitive applications. This particular device is suitable for a wide range of best-in-class battery monitoring, low voltage protection, and low quiescent current applications.

BU4225FVE-TR Application Field

The BU4225FVE-TR supervisor is one of many available voltage-monitoring devices, ideal for single-cell application. It is a uni/bi-directional supervisor, which means it is capable of determining whether a voltage is too high or too low. It provides precision voltage recognition and support for a wide range of battery operated mobile devices, and is designed to be used in various applications, including standard and rechargeable batteries, digital cameras, digital video (DV) cameras, digital still cameras, portable audio and video players, and portable telecommunications equipment.

The BU4225FVE-TR features both a series type and shunt type of battery protection, depending on the requirements of the application. A unique feature of this device is that it includes a low quiescent current (IDD) of only 0.4µA. This feature coupled with its low-voltage detection accuracy and power efficiency makes it well-suited for battery-powered applications.

BU4225FVE-TR Working Principle

At the heart of the BU4225FVE-TR is the LDO (Low Dropout) regulator, which ensures the voltage supplied to the inputs remains within the prescribed level. It also serves to protect against a sudden drop in input voltage, which could cause damage to components connected to the voltage monitor. The LDO regulator also regulates the voltage levels for protection against over voltage and under voltage.

The BU4225FVE-TR also has an internal reset pin, which generates an active-low reset signal upon detection of low voltage. This helps to protect sensitive components connected to the voltage monitor from damage due to extreme voltage fluctuations. The reset signal is active when the voltage level is below the specified threshold, and clears when the voltage level rises above the specified threshold.

The BU4225FVE-TR also features an innovative automatic timer, which can be used to enforce a regular rest cycle. This timer is designed to provide a longer reset pulse so that the disconnected load remains disconnected for a prescribed amount of time, allowing the load to be charged or allowed to rest. This timer also serves to provide short-term operational stability, which helps the voltage monitor maintain consistent power supply.

In addition to voltage protection, the BU4225FVE-TR is also designed to provide over-temperature protection. This feature helps to prevent the device from malfunctioning due to operating temperature constraints. The BU4225FVE-TR also has an active-low output signal to alert users to any extreme temperature is detected.

Conclusion

The BU4225FVE-TR supervisor is a versatile voltage monitoring solution for mobile device applications, providing precise voltage recognition, low quiescent current, power efficiency, and over-temperature protection. With its series and shunt type of battery protection, and its innovative automatic timer, the BU4225FVE-TR is well-suited for battery-powered applications of various types.

The specific data is subject to PDF, and the above content is for reference