BU4838FVE-TR

Supervisors Overview

The BU4838FVE-TR is a CMOS voltage detector IC manufactured by ROHM Semiconductor, designed for monitoring single-input power supply lines. It features an open-drain output and operates within a maximum supply voltage of 7 V. The device detects under-voltage conditions with a typical threshold of 3.8 V and offers high accuracy of ±1%. It supports a reset active voltage range from 0.7 V to 7 V and includes an adjustable reset delay timer. The component functions reliably across a wide temperature range of -40°C to +125°C while consuming low static current.

Supervisors Feature Summary

• Provides precise under-voltage detection with adjustable reset delay timing capabilities
• Utilizes low-power CMOS technology for minimal static current consumption
• Features open-drain output configuration suitable for various logic levels
• Operates within extended industrial temperature ranges for robust performance

Supervisors Applications

• Portable electronic devices requiring reliable power supervision
• Battery-powered systems needing under-voltage protection
• Industrial control circuits operating in harsh environments
• Consumer electronics utilizing standard voltage rails

Supervisors Procurement Notes

Verify the exact suffix TR indicates reel packaging when sourcing. Confirm RoHS compliance status through official documentation as regulations may update. Check current lifecycle status as this part may be discontinued or restricted. Ensure the VSOF-5 package dimensions match your PCB footprint requirements before finalizing procurement decisions.

Supervisors Selection Notes

Select this component when a single-channel voltage monitor with open-drain output is required. Consider the 3.8 V threshold specifically for applications targeting that voltage level. Evaluate the adjustable reset delay feature against system startup timing needs. Compare power consumption specifications if battery life is a critical design constraint.

Supervisors Part Context

This part belongs to the BU48xxFVE series of standard voltage detectors from ROHM. It shares architectural similarities with other members like BU4816FVE-TR and BU4839FVE-TR, differing primarily in detection thresholds. The series focuses on compact VSOF-5 packaging for space-constrained designs.

Supervisors Replacement Considerations

BD5238G-1 is listed as a similar specification replacement with comparable voltage detection characteristics.