BU4841F-TR

Supervisors Overview

The BU4841F-TR is a standard CMOS voltage detector IC manufactured by ROHM Semiconductor. It features a typical under-voltage detection threshold of 4.1 V with a precision of ±1%. The device operates within a reset active voltage range of 0.7 V to 7 V and utilizes an open-drain output type. Key electrical characteristics include a circuit current of 0.40 μA in the ON state and 0.55 μA in the OFF state at VDET=4.8 V. It lacks manual reset, watchdog timer, and automotive certification capabilities. The component is housed in an SOP-4 package and supports a temperature range from -40 °C to +125 °C.

Supervisors Feature Summary

• CMOS technology for low power consumption
• Open-drain output configuration
• High accuracy voltage detection

Supervisors Applications

• Portable equipment power management
• Battery-operated devices
• General purpose voltage monitoring

Supervisors Procurement Notes

Verify the obsolete status and last-time-buy availability through official ROHM channels before finalizing procurement plans. Confirm that the SOP-4 package dimensions and pinout match the target PCB layout requirements. Ensure compliance with RoHS directives as specified in the official datasheet documentation.

Supervisors Selection Notes

Select this component when a fixed 4.1 V threshold is required without manual reset or watchdog functionalities. Consider the SOP-4 package constraints and the specific operating temperature range of -40 °C to +125 °C. Evaluate the open-drain output compatibility with the downstream logic interface.

Supervisors Part Context

This part belongs to the BU4841 series of standard voltage detectors. It is functionally similar to the BD5241G-1 but differs in packaging and supply status. The BU4841F-TR represents an older generation component compared to newer ROHM supervisory circuits.

Supervisors Replacement Considerations

The BD5241G-1 is listed as a similar specification replacement. Verify package differences (SSOP-5 vs SOP-4) and updated supply status.