BU4315F-TR

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PMIC (Power Management Integrated Circuit) is a type of integrated circuit that performs a variety of power management functions. It manages the supply of power to electrical and electronic devices, with the aim of improving their efficiency, reliability and performance. The BU4315F-TR, specifically, is a voltage-monitoring PMIC supervisor IC from ROHM Semiconductor intended for use in countless kinds of electronic devices. It offers superior tolerance to power supply noise, ripple and temperature variations, making it an ideal solution for power management systems.

The BU4315F-TR has an operating voltage range of 2.4V to 6.0V, and its quiescent current consumption is typically 4.6µA. It has two independent voltage detection outputs (VDET1/2) that can be used to detect various supply voltages, and offers threshold settings in the range 0.3V to 5.0V. The output type is open-drain, and the detection voltage is programmable with 6-bits (64 steps). Additionally, it has a low-voltage reset output signal and a low-voltage detection monitor, both with an independent output signal. The BU4315F-TR also has a watchdog timer functions that can detect signal inactivity.

The application fields of the BU4315F-TR include PCs, cellular phones, digital cameras, personal digital assistants (PDAs) and other portable devices. With its superior tolerance to power supply noise and variation, the BU4315F-TR makes it easy for power management system to ensure correct voltage level in even the most demanding environments. It is also ideal for detecting overcurrent conditions and preventing further damage to the device. Other applications include system reset with power-on reset, low battery warning and watchdog timer.

Working principle of the BU4315F-TR revolves around the concept of voltage detection. The BU4315F-TR is capable of detecting various supply voltages, with the thresholds set between 0.3V to 5.0V. It has two independent voltage detection outputs (VDET1/2), preset by the 6-bit register of the corresponding channel. When the supply voltage exceeds a preset threshold, the corresponding channel will output a signal. The signal output can be used to perform various functions such as system reset, low battery warning, and others. Additionally, the BU4315F-TR also has a watchdog timer that will output a signal when the monitored signal activity is inactive or abnormal.

The BU4315F-TR from ROHM Semiconductor is a voltage-monitoring PMIC supervisor IC that offers superior tolerance to power supply noise and variation. It is an ideal solution for power management system due to its multiple threshold settings and independent output signal. The BU4315F-TR is designed for use in applications such as PCs, digital cameras and PDAs with superior performance and reliability. Its use of voltage detection and watchdog timer functions offer versatile and easily-customizable power management systems.

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