BU4839F-TR

integrated circuits (ICs) are commonly found in nearly all electronic devices and are vital for the performance of such devices. BU4839F-TR, specifically, is an IC from ROHM Co., Ltd, and is classified as a voltage supervisor IC or a power management integrated circuit (PMIC) - Supervisors. It is used in various applications and provides protection to circuits. This article provides an overview of the application field and working principle of BU4839F-TR.

Application Field of BU4839F-TR

BU4839F-TR is an IC that is used in many devices, especially those that use a confined power supply. It is designed to provide voltage protection to devices with 4V to 24V power supply ranges, including PCs, digital home appliances, and cameras. It can also be used in automotive applications and assist with the protection of such applications.

BU4839F-TR is ideal for applications that need an overvoltage protection function. It helps to prevent failure due to excessive voltage and can also be used for power or reset circuits. Additionally, BU4839F-TR functions for input voltage protection and output voltage customization. It is also applicable for high frequency circuits, such as RF ICs.

Working Principle of BU4839F-TR

The BU4839F-TR IC is based on a two-terminal voltage regulator technology. It is composed of two transistors, two resistors and two capacitors. As the input voltage increases, one of the transistors is turned on, and the other is turned off. This generates a voltage that is proportional to the input voltage, and the output voltage is derived from the measured input. The output voltage can be adjusted by changing the values of the resistors and capacitors.

The BU4839F-TR\'s protection circuitry prevents too much current from flowing in and out of the circuit. It can be configured with two individual warning voltage settings that are user-controlled, and a detection circuit detects if either of these settings is exceeded. When this happens, the warning signal is asserted, and the voltage is reset to a safe level. This ensures that the supply voltage remains within the expected range and that the device is protected from any disturbances.

Conclusion

BU4839F-TR is a power management integrated circuit (PMIC) - Supervisors developed by ROHM Co., Ltd. Its applications range from PCs and digital home appliances to automotive applications. BU4839F-TR is based on two-terminal voltage regulator technology and uses two transistors, two resistors, and two capacitors to regulate the output voltage. Additionally, it has a protection circuit that prevents too much current from flowing in or out of the circuit.