BU4935F-TR

Supervisors Overview

The BU4935F-TR is a standard CMOS voltage detector IC manufactured by ROHM Semiconductor. It features a typical under-voltage detection threshold of 3.5V 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. Key electrical characteristics include a circuit current of 0.40μA (ON) and 0.55μA (OFF) at VDET=4.8V, with an L-output current capability of 3.3mA (LowVol) and 6.5mA (HighVol). It incorporates hysteresis defined as VDET x 0.05 and functions across a temperature range of -40°C to 125°C.

Supervisors Feature Summary

• Ultra-low current consumption for extended battery life
• High accuracy voltage detection with specified precision
• CMOS output configuration for direct logic interfacing
• Wide operating temperature range suitable for industrial environments

Supervisors Applications

• Portable electronic devices requiring low power monitoring
• Battery-powered systems needing reliable under-voltage protection
• General purpose voltage supervision in consumer electronics

Supervisors Procurement Notes

Verify the specific ordering suffix and package variant against the official datasheet before procurement. Confirm RoHS compliance status and check supply availability as this component may be subject to lifecycle changes. Ensure the selected part matches the required SOP4 package dimensions and pinout configuration for your PCB layout.

Supervisors Selection Notes

Select this component when a CMOS output interface is preferred over open-drain types. Consider the specific 3.5V detection threshold and ±1% accuracy requirements. Evaluate the 0.7V to 7V reset active range against your system's minimum operating voltage. Verify that the SOP4 package fits your spatial constraints compared to alternative SSOP packages.

Supervisors Part Context

This part belongs to the BU49xx series of standard CMOS voltage detectors from ROHM. It is designed for applications requiring high-accuracy detection and ultra-low current consumption. The series offers various detection voltages and output types to suit different system needs.

Supervisors Replacement Considerations

BD5235G-1TR is listed as a similar specification replacement. Note differences in package (SSOP5 vs SOP4), output type (Open drain vs CMOS), and delay timer capabilities.