BU4831F-TR

Supervisors Overview

The BU4831F-TR is a CMOS voltage detector IC manufactured by ROHM Semiconductor, designed for monitoring power supply voltages in electronic circuits. It features a fixed detection threshold of 3.1 V with an accuracy of ±1%. The device operates within a supply voltage range up to 7 V and supports an output reset active voltage range from 0.7 V to 7 V. It utilizes an open-drain output type and maintains a low static current consumption of 450 nA. The component is housed in a VSOF-5 surface-mount package and is rated for operation across a temperature range of -40°C to +125°C.

Supervisors Feature Summary

• CMOS technology ensures ultra-low power consumption suitable for battery-operated applications.
• Fixed threshold voltage provides precise under-voltage detection without external resistor networks.
• Open-drain output configuration allows flexible interfacing with various logic families.

Supervisors Applications

• Portable electronic devices requiring efficient power management
• Microcontroller system reset circuits
• Battery-powered equipment monitoring

Supervisors Procurement Notes

Verify the specific suffix and package variant against the official datasheet before procurement, as manufacturing statuses may vary. Confirm that the VSOF-5 footprint matches your PCB design constraints. Check for end-of-life or last-time-buy notices directly from the manufacturer, as availability for this specific part number may be restricted. Ensure compliance with RoHS standards if required for your assembly process.

Supervisors Selection Notes

Select this component when a fixed 3.1 V detection threshold is required for system supervision. Consider the VSOF-5 package size relative to available board space. Evaluate the 450 nA static current against total system power budgets. Verify that the open-drain output capability aligns with the pull-up requirements of the connected circuitry.

Supervisors Part Context

This component belongs to the BU48xx series of standard voltage detectors from ROHM Semiconductor. These ICs are engineered for high precision and low current consumption, targeting applications where power efficiency and reliable voltage monitoring are critical. The series typically includes various threshold options to accommodate different supply rail requirements.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers for the BU4831F-TR were not found in the provided source material. Consult the manufacturer's official documentation for recommended replacements or pin-compatible alternatives.