BU4836F-TR

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The BU4836F-TR is a device in the class of Supervisors, which are part of the Power Management Integrated Circuits (PMIC). This device is used in order to achieve an optimal power control in various electronics, ranging from automotive to industrial. In this article, the application field and working principle of the BU4836F-TR will be discussed in detail.

The BU4836F-TR was specifically designed to be used in automotive in-vehicle infotainment systems, due to its low standby current of 1uA under a voltage range of 2.4V to 5.5V. Furthermore, the device has an impressive slew rate of less than 15mV/us and a selectable reset voltage of 1.65V to 4.5V which makes it highly applicable in the automotive industry. Additionally, the BU4836F-TR is also able to accept a wide range signal input, ranging from 0.8V to 5.2V, while still providing an accurate output reset voltage.

The BU4836F-TR is also suitable for industrial applications such as factory automation equipment and automation systems, as well as applications where power interruptions occur frequently. The device can detect an over voltage condition or an under voltage condition, and if either condition is detected, it will generate a low reset signal and hold reset until the voltage returns to a normal level. This allows for the electronic device to remain protected against sudden power disruptions, as the reset signal will help to restore the electronics as soon as the power is restored.

The BU4836F-TR is composed of a number of components, including a differential amplifier, a voltage reference, a comparator, a voltage regulator and several resistors. The differential amplifier is used to compare the on-board voltage, or I/O voltage, against an externally supplied reference voltage. The output of the differential amplifier is sent to the comparator, which then gives a low reset signal when the set voltage is exceeded. The output of the comparator is routed to the voltage regulator, which takes the output from the comparator and adjusts the reset voltage to a predetermined level, thus generating the required reset signal.

The BU4836F-TR is also capable of providing an early warning reset, which is triggered when the supply voltage falls below a predetermined level. This is done by connecting the under voltage threshold pin to a resistor network, allowing for control of the reset voltage. When the voltage of the electronics falls below the predetermined level, the resistor network will reduce the threshold voltage, thus triggering a reset. This reset will initiate an early warning reset, which allows for a more refined and accurate reset.

In summary, the BU4836F-TR is an excellent Supervisor in the Power Management Integrated Circuits class, providing a reliable and accurate means of resetting devices in the automotive, industrial and other applications where sudden power interruptions need to be addressed. The device contains many components, including a differential amplifier, a comparator and a voltage regulator, all which working together to ensure an optimal reset voltage is generated. By accurately detecting the supply voltage, it provides early warning reset, allowing for sufficient protection from power interruptions in the electronics.

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