BU4929FVE-TR

Supervisors Overview

The BU4929FVE-TR is a standard voltage detector manufactured by Rohm Semiconductor, designed for monitoring single-channel power supply voltages. It features a typical under-voltage detection threshold of 2.9V with a precision of ±1%. The device operates within a reset active voltage range of 0.7 to 7V and supports a maximum supply voltage of 7V. It utilizes a CMOS output type with a low active state and lacks manual reset or watchdog timer functions. The component is housed in a VSOF5 package (1.6x1.6mm) and operates across a temperature range of -40°C to 125°C.

Supervisors Feature Summary

• CMOS output interface providing low active reset signal
• Compact VSOF5 surface-mount packaging for space-constrained designs
• Wide operating temperature range suitable for industrial environments

Supervisors Applications

• Portable electronic devices requiring low-power supervision
• Battery-operated systems needing under-voltage protection
• General-purpose microcontroller reset circuits

Supervisors Procurement Notes

Verify the obsolete status and last-time-buy availability before procurement. Confirm that the VSOF5 package dimensions match the target PCB footprint. Ensure the 2.9V detection threshold aligns with system requirements. Check RoHS compliance documentation for regulatory adherence. Validate that the CMOS output logic levels are compatible with downstream components.

Supervisors Selection Notes

Select this component when a compact, low-cost voltage detector with CMOS output is required. Consider the 2.9V threshold and ±1% precision for specific supply rail monitoring. Evaluate the VSOF5 package size against available board space. Note the absence of delay timers or manual reset if those features are necessary for the application design.

Supervisors Part Context

This part belongs to Rohm's standard voltage detector family, specifically optimized for low-power applications. It serves as a supervisory circuit for ensuring stable operation of digital logic by detecting under-voltage conditions. The VSOF5 package offers a small form factor compared to traditional SOT packages.

Supervisors Replacement Considerations

The BD5229G-1 is listed as a recommended replacement with similar specifications. Verify compatibility regarding the SSOP5 package versus VSOF5 and the open-drain output type difference.