BU4846FVE-TR

Supervisors Overview

The BU4846FVE-TR is a CMOS voltage detector IC manufactured by ROHM Semiconductor, designed for monitoring single-channel power supply voltages. It features an under-voltage detection threshold of 4.6V with a precision of ±1%. The device provides an open-drain output that activates when the monitored voltage falls below the threshold. It operates within a reset active voltage range of 0.7V to 7V and consumes ultra-low current, specified at 0.40μA in the ON state and 0.55μA in the OFF state at Vdet=4.8V. The component utilizes a 5-VSOF (SOT-665) surface-mount package and supports an operating temperature range from -40°C to +125°C.

Supervisors Feature Summary

• CMOS process technology ensures ultra-low current consumption for extended battery life in portable applications.
• Open-drain output configuration allows flexible interfacing with various logic families and microcontrollers.
• High detection accuracy with ±1% precision on the under-voltage threshold voltage.
• Wide operating temperature range suitable for demanding industrial and automotive environments.

Supervisors Applications

• Portable electronic devices requiring low-power voltage supervision
• Industrial control systems needing reliable power monitoring
• Automotive electronics operating in harsh thermal conditions

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to end-of-life status. Confirm package integrity and pin alignment against the 5-VSOF specification before integration. Request updated reliability data sheets and RoHS compliance certificates to ensure adherence to current environmental regulations. Validate electrical parameters against the official datasheet to guarantee performance consistency in final assembly.

Supervisors Selection Notes

Select this component for designs requiring precise under-voltage detection with minimal quiescent current. The open-drain output necessitates an external pull-up resistor; ensure compatibility with the target system logic levels. Consider the 5-VSOF package dimensions for PCB layout constraints. Verify that the 4.6V threshold aligns with the specific power rail requirements of the application circuit.

Supervisors Part Context

This part belongs to the BU4846 series of standard voltage detectors from ROHM Semiconductor. It is functionally similar to the BD5246G-1, which offers comparable specifications in an SSOP-5 package. The BU4846FVE-TR represents a specific packaging variant optimized for surface-mount assembly technologies, maintaining the core electrical characteristics of the series while adapting to different footprint requirements.

Supervisors Replacement Considerations

The BD5246G-1 is listed as a similar level replacement with identical electrical specifications but in an SSOP-5 package. Designers must account for mechanical footprint differences when substituting components. Ensure that any alternative part maintains the same open-drain output type and detection threshold to preserve circuit functionality without redesigning the surrounding passive components.