BU4237FVE-TR

Overview

The BU4237FVE-TR is a voltage detector IC manufactured by Rohm Semiconductor, designed for supervisory circuit applications. It features an open-drain output and provides a low-active reset signal. The device monitors a single input channel with a typical threshold voltage of 3.7V and offers adjustable reset delay timing. It operates within a supply voltage range of 0.7V to 7V and supports surface-mount installation in a VSOF5 package. The component functions across a temperature range of -40°C to +125°C.

Feature Summary

• Provides low-active reset output via open-drain configuration
• Features adjustable reset delay timer functionality
• Supports wide operating supply voltage range from 0.7V to 7V

Applications

• Power supply supervision in electronic systems
• Voltage monitoring for microprocessor reset circuits
• Battery backup switching detection

Procurement Notes

Verify the specific suffix and package variant against the official datasheet to ensure compatibility with design requirements. Confirm end-of-life status and last-time-buy dates if sourcing for production. Check RoHS compliance and environmental certifications as per project specifications. Validate pinout alignment with existing PCB layouts before procurement.

Selection Notes

Select this component when a simple voltage detector with adjustable delay is required for single-channel monitoring. Consider the open-drain output capability for interfacing with various logic levels. Evaluate the VSOF5 package size constraints against available board space. Ensure the operating temperature range meets the environmental conditions of the target application.

Part Context

This part belongs to the BU42xx series of voltage detectors from Rohm Semiconductor. These devices are commonly used in power management applications where reliable supervision of supply voltages is critical. The series typically includes variants with different threshold voltages and package options to suit diverse design needs.

Replacement Considerations

BD5237G-1TR is listed as a similar level replacement with the same pinout.