BU4236F-TR

Overview

The BU4236F-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-input power supply lines. It features an adjustable reset delay timer and operates within a wide supply voltage range of 0.7 V to 7 V. The device provides a low-active open-drain output with a typical threshold accuracy of ±1%. It functions reliably across an extended industrial temperature range from -40°C to +125°C while consuming minimal quiescent current.

Feature Summary

• Adjustable reset delay timer allows customization of the reset pulse width via an external capacitor.
• Low quiescent current consumption supports battery-powered applications and energy efficiency.
• Open-drain output structure enables flexible interfacing with various logic families.

Applications

• Microprocessor system supervision
• Portable electronic devices requiring low power monitoring
• Industrial control circuit protection

Procurement Notes

Verify the specific suffix and package configuration against the official datasheet before procurement. Confirm that the component meets RoHS compliance requirements for your target market. Ensure the ordering part number matches the exact threshold voltage and delay characteristics required for the design. Check for any end-of-life notices or recommended alternates in the manufacturer's latest documentation.

Selection Notes

Select this component when a precise voltage threshold near 3.6 V is required with customizable reset timing. Consider the SSOP-5 or SOP-4 package availability depending on board space constraints. Evaluate the open-drain output compatibility with the downstream logic levels. Verify that the operating temperature range aligns with the environmental conditions of the final application.

Part Context

This part belongs to the BU42(43)xx series of voltage detectors from ROHM Semiconductor. It is specifically engineered for low-voltage detection in compact surface-mount packages. The series is widely used in consumer electronics and industrial systems where reliable power supervision is critical for system stability and data integrity.

Replacement Considerations

BD5236G-1 is listed as a recommended alternate with the same pinout and similar electrical characteristics. Verify package differences and current consumption specs when substituting.