BU4924F-TR

Supervisors Overview

The BU4924F-TR is a single-channel voltage detector manufactured by Rohm Semiconductor, designed for monitoring power supply voltages in electronic systems. It operates within a detection voltage range of 0.7V to 7V and features a fixed threshold of 2.4V with ±1% accuracy. The device utilizes a CMOS output type and provides a high-active reset signal without an internal delay timer or manual reset function. It is housed in a compact 4-SOP (SC-82) surface-mount package and supports a wide operating temperature range from -40°C to +125°C.

Supervisors Feature Summary

• Provides simple supervisory functions including power-on reset and voltage monitoring without complex timing features.
• Features a push-pull/totem pole output structure compatible with standard CMOS logic levels.
• Operates over a broad input voltage range suitable for various low-voltage digital applications.

Supervisors Applications

• Microprocessor power supply supervision
• Portable battery-powered equipment monitoring
• Test and measurement instrument voltage tracking

Supervisors Procurement Notes

Verify component authenticity through authorized distributors as the part status is listed as obsolete. Confirm final time buy availability and check for RoHS3 compliance documentation before procurement. Ensure the 4-SOP package footprint matches the target PCB design constraints.

Supervisors Selection Notes

Select this component when a fixed 2.4V threshold is required for system reset generation. Consider the push-pull output capability if driving loads directly without open-drain pull-ups. Evaluate the 4-SOP package size against available board space compared to alternative SSOP packages.

Supervisors Part Context

This component belongs to the BU49xx series of standard voltage detectors from Rohm Semiconductor. It serves as a basic supervisory circuit for ensuring stable operation of digital logic families by detecting under-voltage conditions.

Supervisors Replacement Considerations

The BD5224G-1 is documented as a similar specification replacement, though it differs in package type (SSOP5 vs SOP4) and output configuration (open drain vs CMOS). Verify pinout compatibility and electrical parameter alignment before substitution.