BU4925F-TR

Supervisors Overview

The BU4925F-TR is a standard voltage detector manufactured by ROHM Semiconductor, designed for microprocessor power supply monitoring and reset circuit applications. It features a CMOS output type with a typical threshold detection voltage of 2.5 V and a precision of ±1%. The device operates within a reset active voltage range of 0.7 V to 7 V and supports a maximum supply voltage of 7 V. It includes a hysteresis voltage defined as VDET x 0.05 and offers low output currents of 3.3 mA (Low) and 6.5 mA (High). The component is housed in an SOP-4 package, measures 2.0x2.1 mm with a thickness of 1.05 mm, and functions across a temperature range of -40 °C to 125 °C.

Supervisors Feature Summary

• Provides reliable microprocessor power supply monitoring and reset signal generation
• Features CMOS output interface with defined hysteresis characteristics
• Operates within a wide reset active voltage range from 0.7 V to 7 V

Supervisors Applications

• Microprocessor power voltage monitoring
• Portable battery-powered equipment
• Multi-output power supplies

Supervisors Procurement Notes

Verify the specific ordering suffix and package variant against the official datasheet to ensure compatibility with design requirements. Confirm RoHS compliance status and check for any 'Last Time Buy' notices or obsolescence warnings directly from the manufacturer before finalizing procurement plans.

Supervisors Selection Notes

Select this component when a fixed 2.5 V threshold with high accuracy is required for single-input voltage monitoring. Ensure the SOP-4 package dimensions fit the PCB layout constraints. Verify that the CMOS output drive capability meets the load requirements of the connected reset input without additional buffering.

Supervisors Part Context

This part belongs to the BU49xx series of voltage detectors from ROHM Semiconductor. It is specifically engineered for portable computers, laptops, and test instruments where stable power supervision is critical. The series typically offers various threshold voltages and package options to suit different system architectures.

Supervisors Replacement Considerations

BD5225G-1 is listed as a similar specification replacement with SSOP-5 packaging.