BU4948FVE-TR

Supervisors Overview

The BU4948FVE-TR is a standard voltage detector manufactured by ROHM Semiconductor, designed for monitoring single power supply rails. It features a CMOS output type with a typical under-voltage detection threshold of 4.8V and a precision of ±1%. The device operates within a reset active voltage range of 0.95V to 10V and includes an adjustable delay timer. Key electrical characteristics include a circuit current of 0.60μA at VS=4.8V (on state) and 0.85μA (off state). Hysteresis is defined as VS x 0.05 or Vdet x 0.05. It is housed in a VSOF-5 package and supports RoHS compliance.

Supervisors Feature Summary

• CMOS output interface for digital logic compatibility
• Adjustable reset delay timer functionality
• Low power consumption with microampere-level standby current
• Hysteresis voltage support for noise immunity

Supervisors Applications

• Microprocessor system reset circuits
• Portable equipment power management
• Battery-operated device supervision
• General-purpose voltage monitoring

Supervisors Procurement Notes

Verify the exact ordering suffix and package variant against the official ROHM datasheet before procurement. Confirm that the specific revision matches design requirements, as manufacturing status may affect availability. Ensure compatibility with existing PCB footprints and verify RoHS compliance documentation for regulatory adherence.

Supervisors Selection Notes

Select this component when a fixed 4.8V threshold with adjustable delay is required. Compare circuit current specifications against similar models like BD4948FVE if lower quiescent current is critical. Ensure the VSOF-5 package fits the assembly constraints and validate the reset active state polarity with the target system logic levels.

Supervisors Part Context

This part belongs to the BU49 series of standard voltage detectors from ROHM Semiconductor. It shares functional similarities with other members like BU4946FVE and BU4947FVE, differing primarily in detection thresholds and package options. The series is characterized by low power consumption and compact packaging suitable for space-constrained applications.

Supervisors Replacement Considerations

BD4948FVE is listed as a similar level replacement with identical specifications but different packaging (SSOP-5 vs VSOF-5). Verify pinout compatibility and thermal performance differences between the VSOF-5 and SSOP-5 packages before substitution.