BU4830F-TR

Supervisors Overview

The BU4830F-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring power supply integrity. It features a fixed threshold voltage of 3.0V with a precision of ±1%. The device operates within a detection voltage range of 0.7V to 7V and utilizes an open-drain output type that activates at a low state. It does not include manual reset, watchdog timer, or battery backup switch functionalities. The component is housed in a SOP-4 package and supports a supply voltage up to 7V. Operating temperatures range from -40°C to +125°C, with typical circuit currents of 0.40μA (on) and 0.55μA (off).

Supervisors Feature Summary

• CMOS technology ensures ultra-low current consumption for extended battery life.
• Fixed 3.0V threshold provides precise under-voltage detection without external components.
• Open-drain output allows flexible interfacing with various logic families.

Supervisors Applications

• Portable electronic devices requiring efficient power management.
• Battery-operated systems needing reliable voltage supervision.
• General-purpose microprocessor reset circuits.

Supervisors Procurement Notes

Verify the specific suffix 'F' corresponds to the SOP-4 package configuration required for your PCB layout. Confirm that the fixed 3.0V threshold aligns with your system's under-voltage lockout requirements. Check for end-of-life status as some distributors list this part as discontinued or last-time-buy. Ensure compatibility with your operating temperature range of -40°C to +125°C.

Supervisors Selection Notes

Select this component when a fixed 3.0V detection point is necessary for system protection. The SOP-4 package is suitable for space-constrained designs compared to larger packages. Consider the open-drain output if level shifting or wired-OR connections are needed. Evaluate the low static current against other options if power efficiency is critical. Verify that no manual reset or watchdog features are required for the application.

Supervisors Part Context

This part belongs to the BU4830 series of standard voltage detectors from ROHM. It is functionally similar to the BD5230G-1 but differs in packaging and minor electrical characteristics. The series is designed for general-purpose voltage monitoring in consumer and industrial electronics. Replacement parts may include variants with different thresholds or packages within the same family.

Supervisors FAQ

Does the BU4830F-TR include a manual reset function?

No, the BU4830F-TR does not support manual reset functionality.

What is the output type of the BU4830F-TR?

The output type is open-drain, which requires an external pull-up resistor.