BU4210G-TR

Overview

The BU4210G-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 an adjustable reset delay timer. The device provides a threshold voltage of 1 V with ±1% accuracy and utilizes an open-drain output configuration. It is housed in a compact SSOP-5 package suitable for surface mount applications. The component supports an operating temperature range from -40°C to +125°C and consumes minimal quiescent current.

Feature Summary

• Adjustable reset delay timer functionality
• Open-drain output interface
• High precision voltage detection

Applications

• Portable electronic devices requiring low voltage monitoring
• Battery-powered systems with power management needs
• General purpose supervisory circuits

Procurement Notes

Verify the obsolete status before procurement as this part is marked End-of-Life. Confirm availability through authorized distributors only. Ensure compatibility with existing PCB layouts due to the SSOP-5 package. Check RoHS compliance documentation for regulatory requirements. Validate replacement options if new design integration is planned.

Selection Notes

Select this component for applications requiring precise voltage supervision with adjustable timing delays. Consider the open-drain output for flexible logic interfacing. Evaluate the wide operating temperature range for harsh environments. Compare against newer alternatives like the BD5210G series for improved performance or availability in new designs.

Part Context

This voltage detector belongs to the BU42xxG series from ROHM Semiconductor, focusing on low-power monitoring solutions. It serves as a legacy component within the company's PMIC portfolio. The device addresses basic supervisory needs in consumer electronics and industrial control systems where cost-effective voltage detection is prioritized over advanced features.

Replacement Considerations

The BD5210G-1TR is a recommended replacement with the same pinout and package. Verify electrical parameter compatibility during substitution.