BU4948F-TR

Supervisors Overview

The BU4948F-TR is a standard voltage detector manufactured by ROHM Semiconductor, designed for power supply support applications. It features a fixed detection threshold voltage of 4.8V with no adjustability. The device operates within a maximum supply voltage of 7V and supports a reset active voltage range from 0.7V to 7V. It utilizes a CMOS output type and lacks manual reset, watchdog timer, or battery backup switch functions. The component is housed in a SOP-4 package, suitable for surface mount installation, and complies with RoHS standards.

Supervisors Feature Summary

• Provides fixed under-voltage detection at a 4.8V threshold without adjustable settings
• Features CMOS output interface for digital logic compatibility
• Operates across an extended temperature range from -40°C to +125°C
• Supports reset active voltage range from 0.7V to 7V

Supervisors Applications

• Power supply monitoring circuits
• Embedded system supervision
• Microcontroller reset generation

Supervisors Procurement Notes

Verify the specific suffix 'F' against official ROHM documentation to confirm the exact threshold voltage and package variant, as ordering codes may vary. Ensure the source document explicitly lists BU4948F-TR as the valid part number. Cross-reference the SOP-4 package dimensions with the manufacturer's mechanical drawing to guarantee PCB footprint compatibility. Confirm RoHS compliance status directly from the latest datasheet revision.

Supervisors Selection Notes

Select this component when a fixed 4.8V detection threshold is required for single-input voltage monitoring. The CMOS output is suitable for direct interfacing with digital logic gates. Consider the lack of internal delay timers if precise reset sequencing is not needed. The wide operating temperature range makes it appropriate for industrial environments where thermal stability is critical for consistent voltage detection performance.

Supervisors Part Context

The BU4948F-TR belongs to ROHM's standard voltage detector series, specifically engineered for supervisory circuit roles. It is distinct from MCU classifications sometimes found in generic databases; its primary function is voltage supervision. The 'TR' suffix indicates tape and reel packaging for automated assembly. This part is part of a family offering various fixed thresholds, differentiated primarily by their detection voltage levels rather than functional architecture.

Supervisors Replacement Considerations

BD5248G-1 is a recommended replacement with similar specifications, though it uses an SSOP-5 package instead of SOP-4.