BU4925G-TR

Supervisors Overview

The BU4925G-TR is a CMOS voltage detector and reset circuit manufactured by ROHM Semiconductor. It features a threshold voltage of 2.5 V with a reset voltage range of 2.475 V to 2.525 V. The device operates within a supply voltage range of 0.7 V to 7 V and supports an operating temperature range from -40 °C to +125 °C. It has a maximum power dissipation of 540 mW and utilizes an SSOP-5 package.

Supervisors Feature Summary

• CMOS output type for direct logic interface
• Low standby current consumption
• Compact SSOP-5 surface mount package

Supervisors Applications

• Microprocessor power voltage monitoring
• Portable computer and laptop systems
• Test and measurement instruments
• Battery-powered equipment

Supervisors Procurement Notes

Verify the specific revision level and RoHS compliance status through official manufacturer documentation before procurement. Confirm that the SSOP-5 package dimensions match the target PCB footprint requirements. Ensure the supply voltage range aligns with the system's operational limits to prevent false triggering or damage.

Supervisors Selection Notes

Select this component when a fixed 2.5 V detection threshold is required for single-input monitoring. Consider the CMOS output capability for driving standard logic inputs directly. Evaluate the thermal performance against the 540 mW dissipation limit in the intended enclosure environment.

Supervisors Part Context

This part belongs to the BU49xx series of voltage detectors designed for microprocessor supervision. It serves as a legacy component, often replaced by newer iterations like the BD5225G-1 series which offer similar functionality with updated specifications. The series is characterized by low power consumption and compact packaging suitable for portable electronics.

Supervisors Replacement Considerations

The BD5225G-1TR is documented as a recommended replacement with the same SSOP-5 package. Verify pin compatibility and electrical parameter alignment, particularly regarding the reset active state and output drive strength, before substituting.