BU4346G-TR

Overview

The BU4346G-TR is a CMOS voltage detector from ROHM Semiconductor, designed for monitoring single power supply rails. It features an adjustable reset delay timer and operates within a detection voltage range of 0.7 V to 7 V. The typical under-voltage detection threshold is 4.6 V with ±1% precision. Supply current is 550 nA at maximum operating temperature. The device utilizes an SSOP-5 package and supports surface mount installation.

Feature Summary

• CMOS output type for low power consumption
• Adjustable reset delay timer functionality
• High accuracy voltage detection with hysteresis

Applications

• Portable equipment power management
• Microprocessor system supervision
• Battery-powered device monitoring

Procurement Notes

Verify the specific suffix G-TR against the official ROHM datasheet to confirm the SSOP-5 packaging and tape-and-reel configuration. Ensure the part number matches the exact detection voltage variant required for the design. Check RoHS compliance status in the latest documentation before procurement.

Selection Notes

Select this component when a low quiescent current voltage detector with adjustable timing is required. The 550 nA supply current makes it suitable for battery-operated applications. Verify that the 4.6 V threshold aligns with the target system's brown-out protection requirements.

Part Context

This part belongs to the BU42(43)xxFVE series of supervisory circuits. It is classified as a voltage detector within the PMIC category. The device is intended for use in systems requiring reliable power supply monitoring with minimal impact on overall energy efficiency.

Replacement Considerations

The BD5246G-1 is listed as a similar level replacement with the same pinout and package. Verify electrical parameters and availability before substitution.