BU4943FVE-TR

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Power management integrated circuit, or PMIC for short, refers to the integration of multiple independent circuits or functions within an integrated circuit. It is usually used for power management, voltage or current monitoring and regulating, analog-digital conversion and other applications. PMICs are designed to optimize power usage and power sequencing with the goal of improving the overall performance and reliability of the electronics system. Supervisors are a class of PMICs that provide monitoring and controlling functions for complex embedded systems.

BU4943FVE-TR is a type of supervisors that features a Resetting circuit, a Voltage Detecting circuit, and a Function Protective circuit. This device is optimal for protecting circuits against any caused malfunctions, voltage drops and signal distortions. It operates via detecting the normal operation voltage and allows the continued functioning of the system as long as the voltage is maintained. The BU4943FVE-TR is a highly integrated consumer electronic system supervisor IC with integrated voltage thresholds, open drain reset output, and programmable time delays.

Application Field

The BU4943FVE-TR is designed for use in consumer-grade electronics such as digital cameras and smartphones, desktop computers and laptop devices, and other consumer electronics. It is ideal for main power and system startups and can be used to protect circuits against malfunctions, voltage drops, and signal distortions.

It is also suitable for use in automotive and industrial applications such as power supplies and lighting, automotive audio-visual entertainment systems, and electronic devices and systems used in industrial automation and process control.

Working Principle

The BU4943FVE-TR operates by detecting the normal operation voltage of the system and allowing the continued functioning of the system as long as the voltage is maintained. The built-in voltage threshold can be adjusted from 2.0V to 4.6V, allowing flexible control of the voltage levels. The resetting circuit sends a reset signal when the monitored voltage drops below the threshold, thereby protecting the system from malfunctions, voltage drops, and signal distortions.

The Voltage Detecting circuit allows for voltage detection and delay control. This feature is important in preventing reset glitches, power supply noise, and other issues that may occur during system startup. The Voltage Detecting circuit also features programmable delay times and active high/low functions.

The Function Protective circuit is used to protect circuits from malfunctions, voltage drops, and signal distortions. This feature is ideal for use in complex embedded systems, as it helps prevent abrupt system shutdown by detecting malfunctions and preventing them from occurring. Additionally, the Function Protective circuit features a programmable blocking time and open-drain reset output.

The BU4943FVE-TR is an ideal solution for systems that require protection from malfunctions, voltage drops, and signal distortions. It operates unobtrusively and independently, ensuring that the system continues functioning as designed. Its built-in voltage threshold and programmable delay time are adjustable to fit the application, making it a highly flexible and versatile supervisor IC.

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