BU4347F-TR

Supervisors: BU4347F-TR Application Field and Working Principle

The BU4347F-TR is an ultra-small, low-power frequency supervisor IC designed by ROHM Semiconductor, specifically designed to quickly detect an external clock and reset the device. As a member of the BU43xxF-TR / BU44xxF-TR series, this product is mainly used in applications such as audio-related products, automotive audio systems, and cost-sensitive consumer products where ultra-small footprints are needed.

The BU4347F-TR employs a single-function controller, which enables control of a power supply with fewer external components. Houses 8 lead USP packages, the BU4347F-TR boasts the world\'s smallest footprint, making it ideal for applications where small size and high reliability are essential.

The BU4347F-TR supervisor is designed to monitor the frequency of an external crystal oscillator or clock signal, and can be configured with a variety of parameters, including detection frequencies, detection levels, and reset duration.

BU4347F-TR Working Principle

The BU4347F-TR supervisor is designed to monitor the frequency of an external crystal oscillator or clock signal and can be configured with a variety of parameters, such as detection frequencies and levels, as well as reset duration.

When the frequency of the external oscillator is within the specified range, the BU4347F-TR detects the signal and emits a reset signal. This reset signal can be used to reset MCU, logic gates and so on. In order to ensure the fastest response time and the most accurate results, the BU4347F-TR is designed to perform frequency monitoring and resetting with 1 cycle accuracy.

BU4347F-TR Application Field

The BU4347F-TR is mainly used in applications such as automotive audio systems, consumer products with small footprints, as well as audio-related products which require reliable and accurate frequency monitoring capability.

In automotive audio systems, the BU4347F-TR can help protect the system from sudden sound changes due to unexpected external clock signals, while in consumer products and audio-related products, the BU4347F-TR can keep the audio quality stable by suppressing frequency interference from external signals.

Conclusion

The BU4347F-TR is an ultra-small, low-power frequency supervisor IC designed by Rohm for applications such as automotive audio systems, consumer products with small footprints, and audio-related products. It is designed to monitor the frequency of an external crystal oscillator or clock signal and can be configured with a variety of parameters, such as detection frequencies and levels, as well as reset duration, ensuring a fast and accurate response.