BU4230F-TR

Overview

The BU4230F-TR is a CMOS low voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-input power supply voltages. It features an open-drain output and operates within a supply voltage range of 0.9 V to 7 V. The device provides a typical threshold detection voltage of 3.0 V with high accuracy of ±1%. It incorporates an adjustable reset delay timer and functions without manual reset or watchdog capabilities. The component supports surface-mount installation in an SOP-4 package and maintains operation across an extended temperature range from -40°C to +125°C.

Feature Summary

• CMOS technology ensures ultra-low current consumption for efficient power management.
• Adjustable reset delay timer allows flexible timing configuration via external components.
• High precision voltage detection capability ensures reliable system supervision.

Applications

• Portable electronic devices requiring low voltage supervision
• Battery-powered systems needing accurate power monitoring
• General-purpose circuit protection applications

Procurement Notes

Verify the specific suffix 'F' indicates the SOP-4 package variant when sourcing replacements. Confirm that the 'TR' designation corresponds to the reel packaging format required for automated assembly processes. Ensure compatibility with existing PCB footprints designated for SOP-4 components during procurement planning.

Selection Notes

Select this component for applications requiring precise voltage monitoring with adjustable timing delays. Consider the wide operating temperature range and low supply current requirements. Verify that the open-drain output interface aligns with the target logic levels and pull-up resistor configurations in the design.

Part Context

This part belongs to the BU42xx series of voltage detectors, which are characterized by CMOS construction and adjustable delay features. The series offers various threshold options to suit different supply rail monitoring needs. The BU4230F-TR specifically targets the 3.0 V detection threshold requirement within this product family lineup.

Replacement Considerations

BD5230G-1TR is documented as a similar level replacement with the same pinout and package configuration. Verify electrical parameter alignment before substitution.

FAQ

Does the BU4230F-TR include a manual reset function?

No, the device does not support manual reset operations.

What is the maximum supply voltage for this detector?

The maximum operating supply voltage is 7 V.