BU4923G-TR

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As one of the more sought-after Integrated Circuits (ICs) of PMIC - Supervisors, BU4923G-TR is a three-terminal positive voltage supervisor for fixed voltage system reset. It features an adjustable reset threshold voltage of 1.3 V to 5.3 V, a dual-power supply operation and a high voltage reset capability of 1.45 V. The IC regulates and supervises the power-up and power-down circuit, ensuring a reliable and stable power voltage.

The BU4923G-TR application field covers computers, notebook computers, 3C electronic modules, and other digital products that require wide system voltage reset. It is an analog circuit integrated into others in the same package, with a wide temperature range operating (-40℃ to +125℃). Furthermore, its high reset accuracy and low current consumption points to its strong performace.

The working principle of BU4923G-TR is relatively simple. It is based on a failsafe circuit that uses two transistors, a capacitor, and a voltage reference source for stable operation. When the primary voltage drops below the threshold voltage set by the capacitor, it will turn off the power supply and enter a reset state. If the primary voltage rises again, it will turn the power supply back on and resume normal operation.

In addition to resetting the system voltage, BU4923G-TR can also be used for a variety of other applications, such as an alarm switch, quick-on timer, programmable time-out circuit, manual reset timer, and power failure warning. Its accurate voltage detecting, low current consumption, and wide temperature range make it a reliable and widely applicable IC.

BU4923G-TR also offers great flexibility when it comes to using other components to build a system reset circuit. Its dual-power supply operation is suitable for both low-voltage and high-voltage systems, while its adjustable reset threshold voltage of 1.3 V to 5.3 V can be adjusted to suit different systems.

In terms of protection, BU4923G-TR features circuit protection such as over voltage, short circuit, and over temperature shut down. In the event of an over-voltage, the IC will automatically shut down and reset the voltage, and if the temperature is too high, the IC will shut down and won’t restart until the temperature drops back to a safe level.

Overall, the BU4923G-TR is a great IC of PMIC - Supervisors, offering wide range application, flexible voltage regulation and circuit protection, as well as low current consumption. With its high reset accuracy and wide temperature range operating, the IC is a reliable and versatile tool for resetting systems, as well as providing them with proper protection.

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