BU4226G-TR

Overview

The BU4226G-TR is a CMOS low voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-input power supply voltages. It operates within a supply voltage range of 0.9 V to 7 V and features a fixed detection threshold of 2.6 V with an accuracy of ±1%. The device provides an open-drain output and includes an adjustable reset delay timer. It consumes only 550 nA of operating current and functions reliably across a temperature range of -40°C to +125°C. Packaged in a compact SSOP-5 format, it supports surface-mount installation.

Feature Summary

• CMOS technology ensures ultra-low power consumption suitable for battery-operated applications
• Adjustable reset delay timer allows customization of response timing via external components
• Open-drain output configuration facilitates interface compatibility with various logic families

Applications

• Portable electronic devices requiring efficient power management
• Microprocessor system reset circuits
• Battery-powered equipment voltage supervision

Procurement Notes

Verify the NRND (Not Recommended for New Designs) status before initiating new projects. Confirm that the SSOP-5 package dimensions align with existing PCB footprints. Ensure the 2.6 V threshold meets specific circuit requirements as it is not user-adjustable internally. Check RoHS compliance documentation for regulatory adherence.

Selection Notes

Select this component when a fixed 2.6 V threshold is required for single-channel voltage monitoring. Consider the adjustable delay feature if precise timing control is necessary without additional external timers. Evaluate the 550 nA current draw against strict power budget constraints. Verify that the open-drain output suits the downstream logic level requirements.

Part Context

This part belongs to the BU42(43)xxG series of supervisory circuits from ROHM Semiconductor. It is categorized under PMIC - Power Management ICs, specifically within the Voltage Detector subcategory. The series is known for integrating low-voltage detection capabilities in small packages for portable electronics.

Replacement Considerations

No direct public substitute part numbers are confirmed in the provided source material for this specific model.