BU4835F-TR

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Power management integrated circuits (PMICs) are one of the most important components of a modern electronic system. They facilitate control over the various power requirements of various electronic system components. In this article, we will discuss one particular PMIC, BU4835F-TR, and examine its application fields and working principle.

The BU4835F-TR is an integrated supervisor circuit produced by the ROHM Semiconductor brand. It is a high-accuracy voltage monitor IC configured with a reference voltage and an open-drain output. It features low current consumption of 390nA (typ.) and a voltage monitor accuracy of +-20mV. It is designed for use in lithium-ion battery protection circuits, and is often found in mobile devices and automotive equipment.

The BU4835F-TR is a member of the Supervisors PMICs subclass, which are designed to monitor supply voltages within a range and alert for conditions outside that range. Supervisors are similar to voltage regulators in their function, but their primary purpose is safety and reliability. When their voltage output signals indicate an unexpected change, they can either alert other components or enter some form of safe state so as to limit any potential damage.

The BU4835F-TR operates on the same underlying principle as other PMIC supervisors. It has two pins, one for input voltage (Vin) and one for monitoring voltage (Vmon), plus one output pin (OUT). Vin receives the voltage to be monitored, while the Vmon pin receives the reference voltage. The BU4835F-TR monitors the difference between these two voltages, and if the difference exceeds a certain level (as determined by an internal voltage drop resistor) the OUT pin outputs a low-level output as an alert.

The BU4835F-TR has two main application fields. The first is in mobile devices and automotive equipment, particularly lithium-ion battery protection circuits. As these devices often operate with limited power sources, the BU4835F-TR provides an easy way to place an overvoltage protection in the circuit. The second application field is in home appliances, most notably LED lighting, where it can be used to monitor the output current and prevent any overcurrent condition.

In summary, the BU4835F-TR is a high-accuracy voltage monitor IC designed for use in lithium-ion battery protection circuits. It belongs to the Supervisors PMICs subclass, whose main purpose is to alert other components or enter safe state in cases of unexpected voltage changes. The BU4835F-TR has two main application fields: mobile devices and automotive equipment, and home appliances such as LED lighting. Its working principle is relatively straightforward, with two pins for voltage input and one for output.

The specific data is subject to PDF, and the above content is for reference