BU4839FVE-TR

Supervisors Overview

The BU4839FVE-TR is a CMOS voltage detector IC from ROHM Semiconductor, designed for power supply supervision. It features a fixed detection threshold of 3.9 V with ±1% accuracy. The device operates within a supply voltage range of 0.7 V to 7 V and draws a typical quiescent current of 550 nA. It utilizes an open-drain output configuration without manual reset or watchdog timer functions. The component is housed in a compact VSOF-5 surface-mount package and supports an industrial operating temperature range from -40°C to +125°C.

Supervisors Feature Summary

• Ultra-low current consumption suitable for battery-powered applications
• High-accuracy voltage detection with fixed threshold options
• Compact VSOF-5 package design for space-constrained layouts

Supervisors Applications

• Portable electronic devices requiring low standby current
• Battery-operated equipment needing reliable power monitoring
• Embedded systems utilizing CMOS logic families

Supervisors Procurement Notes

Verify the lifecycle status before procurement, as this component may be classified as Not Recommended for New Designs (NRND) or End-of-Life. Confirm availability through authorized distributors, as stock levels can vary significantly. Ensure the VSOF-5 package variant matches your PCB footprint requirements. Cross-reference datasheet revisions to confirm electrical parameters remain consistent with your design specifications.

Supervisors Selection Notes

Select this component when a fixed 3.9 V threshold is required with high precision. The open-drain output allows flexible interfacing with various logic levels. Consider the low quiescent current for energy efficiency. Verify that the VSOF-5 package dimensions fit the available board space. Ensure the operating temperature range meets the environmental conditions of the target application.

Supervisors Part Context

This part belongs to the BU48xx series of standard CMOS voltage detectors. The series offers detection voltages from 0.9 V to 4.8 V in 0.1 V increments. It provides both Nch open drain and CMOS output types. The family is characterized by high accuracy and ultra-low current consumption, targeting general-purpose power management needs in consumer and industrial electronics.

Supervisors Replacement Considerations

The BD5239G-1 is listed as a similar specification replacement. Note differences in package type (SSOP5 vs VSOF-5) and reset delay characteristics. Verify pinout compatibility and electrical parameter alignment before substitution.