BU4919FVE-TR

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Power Management Integrated Circuits (PMICs) are key components in the modern electronics market. They serve as the “brains” of electronic products, ensuring their stable and safe operation. The BU4919FVE-TR is a PMIC from Renesas, and it falls under the classification of supervisors. This article will look at the application field and working principle of the BU4919FVE-TR.

Application Field

The BU4919FVE-TR is designed to detect overcurrent, over voltage, and undervoltage in a power system. It can monitor both AC and DC circuits and is suitable for use in motor control applications, automotive electronics, and home appliances. The device has built-in protection features like thermal shutdown, short circuit protection, and current limiting, which can be set by using external resistors or jumpers to provide maximum flexibility. It can also be used in voltage regulator modules (VRMs) to help ensure their stable operation and long-term reliability.

Working Principle

The BU4919FVE-TR supervisor is an analog IC. It works by monitoring the voltage levels in the power system. When the voltage level is outside the pre-defined range, an overcurrent or undervoltage signal is generated and sent to the system. The device monitors both AC and DC inputs, with an adjustable threshold voltage range to suit different applications. It features two independent detect circuits, which can be used simultaneously to detect both overvoltage and undervoltage conditions.

The device also has built-in fault detection and protection features to ensure the system’s safety. It has a watchdog timer circuit, which can be used to detect system errors and then generate a reset signal. It also features a current limit circuit, which can be used to protect the circuit against excessive current draw. The device can detect short circuit conditions as well, and it has an adjustable shutdown delay to provide additional protection. Finally, the BU4919FVE-TR has a thermal shutdown feature, which can be set to trigger when the temperature reaches a certain level.

Conclusion

The BU4919FVE-TR from Renesas is a PMIC supervisor designed for monitoring AC and DC voltage levels in a power system. It can detect over current, undervoltage, and overvoltage conditions, as well as short circuit and thermal shutdown conditions. It has built-in protection features like a watchdog timer and current limiting, and it is ideal for use in motor control applications, automotive applications, and home appliances. With its wide range of features and adjustable settings, the BU4919FVE-TR is a great option for ensuring the stable and safe operation of electronic devices.

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