BU4934FVE-TR

Supervisors Overview

The BU4934FVE-TR is a standard voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-channel power supply voltages. It features a typical under-voltage detection threshold of 3.4V with a precision of ±1%. The device operates within a reset active voltage range of 0.7V to 7V and utilizes a CMOS output type with a low-active reset state. It does not include manual reset, watchdog timer, or adjustable delay functions. The circuit current is specified at 0.40μA (ON) and 0.55μA (OFF) at Vs=4.8V. Hysteresis is defined as VDET x 0.05. It supports an L-output current of 3.3mA (LowVol) and 6.5mA (HighVol). Operating temperature ranges from -40°C to 125°C. The component is housed in a VSOF-5 package.

Supervisors Feature Summary

• CMOS output architecture providing low-active reset signaling for system supervision
• Integrated hysteresis function to prevent output oscillation during voltage transitions
• Compact surface-mount packaging suitable for space-constrained electronic designs

Supervisors Applications

• Portable equipment requiring reliable power supply monitoring
• Battery-operated devices needing under-voltage detection
• General-purpose electronic circuits requiring supervisor ICs

Supervisors Procurement Notes

Verify the specific suffix and package variant against the official datasheet before procurement, as ordering part numbers may differ. Confirm RoHS compliance status and environmental declarations directly from the manufacturer's documentation. Ensure the selected component matches the required operating temperature range and electrical specifications for the target application environment.

Supervisors Selection Notes

Select this component when a fixed 3.4V threshold with CMOS output is required. Consider the VSOF-5 package dimensions for PCB layout compatibility. Evaluate the low quiescent current consumption for battery-powered applications. Verify that the absence of manual reset and watchdog features aligns with the system design requirements.

Supervisors Part Context

This component belongs to the BU49xx series of standard voltage detectors from ROHM Semiconductor. These devices are engineered for simple, cost-effective power management solutions. The series typically offers various threshold voltages to accommodate different logic levels and supply rails. The BU4934FVE-TR specifically targets applications needing precise under-voltage monitoring with minimal external components.

Supervisors Replacement Considerations

BD5234G-1 is listed as a similar specification replacement with SSOP5 packaging.