BU4223G-TR

Overview

The BU4223G-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for supervisory circuit applications. It features an adjustable reset delay timer and operates within a supply voltage range of 0.7 V to 7 V. The typical under-voltage detection threshold is set at 2.3 V with a precision of ±1%. The device utilizes an open-drain output type and maintains a low active current consumption of 0.40 μA at Vdet=4.8 V. It is housed in a compact SSOP5 package, suitable for space-constrained designs requiring precise power monitoring.

Feature Summary

• Incorporates an adjustable delay timer circuit to control reset timing flexibility.
• Delivers high-accuracy voltage detection with specified tolerance margins.
• Ensures minimal power consumption through optimized CMOS architecture.

Applications

• Portable electronic devices requiring efficient power management
• Embedded systems needing reliable brown-out protection
• Battery-operated equipment with strict energy constraints

Procurement Notes

Verify the specific ordering part number against the manufacturer's official documentation to ensure compatibility with the required detection voltage and package configuration. Confirm that the component status aligns with project requirements, as availability may vary based on production lifecycle stages. Cross-reference the datasheet specifications for electrical characteristics before finalizing procurement decisions.

Selection Notes

Select this component when an adjustable delay feature is necessary for system stability during power transitions. The fixed 2.3 V threshold suits applications operating within the 0.7 V to 7 V range. Consider the SSOP5 package dimensions for PCB layout constraints. Evaluate the open-drain output capability against interface requirements of the downstream logic circuits.

Part Context

This component belongs to the BU42xx series of CMOS voltage detectors from ROHM Semiconductor. The series is characterized by built-in delay circuits and low current consumption. The BU4223G-TR specifically addresses applications requiring a 2.3 V detection threshold with programmable delay settings, fitting into the broader portfolio of power management ICs designed for portable and industrial electronics.

Replacement Considerations

The BD5223G-1 serves as a recommended replacement with similar specifications and pinout compatibility. Verify electrical parameters and package dimensions to ensure seamless integration into existing designs without requiring significant circuit modifications.