BU4831FVE-TR

Supervisors Overview

The BU4831FVE-TR is a CMOS voltage detector IC manufactured by ROHM Semiconductor, designed for supervisory circuit applications. It features a single-channel monitoring input with a typical threshold voltage of 3.1 V and an overvoltage detection threshold of 3.131 V. The device operates within a supply voltage range up to 7 V and maintains high accuracy with a precision of ±1%. It consumes low static current, typically 450 nA, and offers a maximum power dissipation of 210 mW. The component supports surface mount installation in a VSOF-5 package and functions reliably across an extended temperature range from -40°C to +125°C.

Supervisors Feature Summary

• Provides precise voltage monitoring with open-drain output capability for system reset generation.
• Operates with ultra-low static current consumption suitable for battery-powered or energy-efficient designs.
• Ensures stable performance across wide industrial temperature ranges without requiring manual reset or watchdog timer functions.

Supervisors Applications

• Portable electronic devices requiring reliable power supervision
• Industrial control systems needing voltage monitoring under harsh environmental conditions
• Consumer electronics utilizing CMOS logic families

Supervisors Procurement Notes

Verify the specific ordering suffix and package variant against the official datasheet before procurement. Confirm that the VSOF-5 footprint matches your PCB layout requirements. Check for end-of-life status or last-time-buy notices as availability may be restricted. Ensure compatibility with your assembly process regarding moisture sensitivity levels and reflow profiles specified in the manufacturer's documentation.

Supervisors Selection Notes

Select this component when a fixed 3.1 V detection threshold is required for single-supply monitoring. Consider the open-drain output configuration for interfacing with various logic levels. Evaluate the low quiescent current against system power budgets. Verify that the absence of delay timers or watchdog features aligns with the application's reset timing needs. Compare thermal dissipation limits against expected operating conditions.

Supervisors Part Context

This part belongs to the BU4831 series of standard voltage detectors from ROHM Semiconductor. It is designed as a simple supervisor circuit without complex features like adjustable delays or manual resets. The series targets cost-sensitive applications requiring basic power-on reset functionality. It complements other ROHM PMIC offerings by providing dedicated voltage monitoring solutions.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult official ROHM documentation for recommended replacements if this component is discontinued or unavailable.

Supervisors FAQ

Does the BU4831FVE-TR include an internal reset delay timer?

No, the BU4831FVE-TR does not feature an internal reset delay timer; it provides immediate reset assertion based on the detected voltage level.

What is the output type of the BU4831FVE-TR?

The output type is open-drain, which allows for flexible interfacing with different logic voltage levels through external pull-up resistors.