BU4933G-TR

PMIC supervisors, such as the BU4933G-TR device, are special types of integrated circuits (ICs) that are used for monitoring and controlling system operating voltages, as well as for generating reset signals. The BU4933G-TR device is a type of miniature supervising IC with a wide range of application fields.

The key feature of the BU4933G-TR device is its fully integrated voltage supervisor, which monitors system voltage and other related voltages. It also has the ability to detect under-voltage (UV) and over-voltage (OV) conditions, as well as providing reset signals in the event of any system anomalies. This allows the device to be used for protection of sensitive microprocessor system components, such as CPUs and GPUs.

Another important feature of this device is its low power consumption. The BU4933G-TR supports power-down modes, so it can be used in portable and battery-powered systems, where power conservation is paramount. It also supports low-voltage operation, enabling devices to be powered by smaller batteries than would otherwise be possible.

The BU4933G-TR is designed to operate over the -55 °C to 125 °C temperature range. This allows it to be used in a wide range of applications, including automotive, industrial and military systems, where high temperature operation is required. The BU4933G-TR also includes shutdown inputs and disable inputs, which allow it to be used for power management in systems where power consumption needs to be precisely controlled.

The BU4933G-TR’s working principle is based on its integrated voltage supervisor. The device is equipped with three internally-set monitoring comparators—the UV comparator, the OV comparator and the reset-validity comparator—which are used to monitor system voltages. In normal operation, the UV and OV comparators detect when system and related voltages rise above or fall below predetermined limits, while the reset-validity comparator ensures that any reset signals generated are valid.

The outputs of these comparators are combined in an onboard logic block, producing reset signals that are sent to the monitored processor and/ or system components. The BU4933G-TR also features a watchdog timer, which can be used to reset the system if no valid reset signal is received. This ensures that the system remains operational, even in the event of an underlying fault.

In summary, the BU4933G-TR is a robust and powerful miniature supervisor IC that is suitable for a wide range of applications. Its integrated voltage supervisor and watchdog timer ensure reliable system operation, and its power-down modes and shutdown inputs enable precise power management. As such, the BU4933G-TR is an ideal choice for safety-critical system design.