BU4246G-TR

Overview

The BU4246G-TR is a CMOS voltage detector IC from ROHM Semiconductor, designed for supervisory circuit applications. It operates within a supply voltage range of 0.7 V to 7 V and features an adjustable reset delay timer. The device provides a 3.6 V threshold detection with ±1% accuracy and utilizes an open-drain output configuration. Packaged in an SSOP-5 format, it supports surface-mount installation and functions across a temperature range of -40°C to +125°C.

Feature Summary

• Adjustable reset delay timer allows customization of response timing via external components.
• Open-drain output interface facilitates direct connection to various logic families without level shifting.
• High precision voltage detection ensures reliable system monitoring with minimal threshold deviation.

Applications

• Microprocessor power supply supervision
• Battery-operated device low-voltage indication
• Embedded system reset generation

Procurement Notes

Verify the current lifecycle status before procurement, as this component may be designated as Not Recommended for New Designs (NRND). Confirm availability through authorized distributors and check for lead time constraints associated with end-of-life products. Ensure compatibility with existing PCB footprints and validate that the SSOP-5 package meets thermal requirements for the target application environment.

Selection Notes

Select this component when an adjustable delay feature is required for noise immunity or startup sequencing. The wide operating voltage range and high accuracy make it suitable for precise monitoring tasks. Consider the open-drain output capability for interfacing flexibility. Evaluate the NRND status against long-term production needs and potential obsolescence risks compared to recommended alternatives.

Part Context

This part belongs to the BU42xxG series of voltage detectors, characterized by low power consumption and compact packaging. It serves as a specialized supervisory circuit within ROHM's PMIC portfolio, targeting cost-sensitive consumer and industrial electronics requiring reliable power management solutions.

Replacement Considerations

The BD5246G-1 is identified as a recommended replacement with the same pinout and package. Verify functional equivalence regarding threshold voltage and delay characteristics before substitution.