BD4855FVE-TR

Overview

The BD4855FVE-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-input supply voltages. It features an open-drain output and operates within a maximum supply voltage of 10 V. The device provides a threshold voltage of 5.6 V with a reset delay time of 100 µs. It is housed in a VSOF-5 surface-mount package and supports operation from -40°C to +105°C. The component lacks manual reset, watchdog timer, and battery backup switch functionalities.

Feature Summary

• CMOS technology enables low power consumption for continuous voltage monitoring applications
• Open-drain output configuration allows flexible interfacing with various logic families
• Compact VSOF-5 package facilitates space-constrained surface-mount designs

Applications

• Portable electronic devices requiring reliable power supervision
• Industrial control systems needing voltage level monitoring
• Consumer electronics utilizing CMOS logic interfaces

Procurement Notes

Verify component authenticity through authorized channels as the part is marked obsolete. Confirm RoHS compliance status via official documentation before integration. Check for end-of-life restrictions or last-time-buy notices from the manufacturer. Ensure storage conditions meet specified humidity sensitivity levels to prevent damage prior to assembly.

Selection Notes

Select this component when a fixed 5.6 V detection threshold is required for single-supervision tasks. Consider the open-drain output compatibility with target system logic levels. Evaluate the VSOF-5 footprint against available PCB real estate constraints. Verify that the absence of manual reset and watchdog features aligns with system design requirements.

Part Context

This voltage detector belongs to the BD48 series of supervisory circuits from ROHM Semiconductor. It serves as a specialized IC for maintaining system stability by detecting under-voltage conditions. The device integrates essential monitoring functions into a minimal pin-count package, supporting efficient power management strategies in compact electronic architectures.

Replacement Considerations

BD4947FVE-TR offers similar functionality with a 4.7 V threshold and CMOS output. BD4859FVE-TR provides a 5.9 V threshold option within the same series. Both alternatives maintain comparable package styles and operational characteristics for potential design substitutions.