BU46K402G-TL

Overview

The BU46K402G-TL is a voltage detector IC from ROHM Semiconductor, designed for supervisory circuit applications. It features a fixed threshold voltage of 4 V with an accuracy of ±1%. The device operates within a supply voltage range of 600 mV to 6 V and draws a quiescent current of 2.8 µA. It provides a CMOS output type with a fixed reset delay time of 200 ms. The component is housed in an SSOP-3 package and supports operation across a temperature range of -40°C to +105°C.

Feature Summary

• CMOS output interface for digital logic compatibility
• Low power consumption with 2.8 µA operating current
• High precision voltage detection with ±1% accuracy

Applications

• Portable equipment battery monitoring
• Microprocessor system reset circuits
• Battery-powered device supervision

Procurement Notes

Verify the Not Recommended for New Design (NRND) status before integration into new products. Confirm RoHS compliance details via official documentation. Ensure availability aligns with long-term supply requirements due to potential phase-out constraints.

Selection Notes

Select this component for single-input voltage monitoring requiring precise threshold detection at 4 V. Consider the SSOP-3 package size for space-constrained designs. Evaluate the 200 ms reset delay against system startup timing requirements.

Part Context

This part belongs to the BU45/BU46 series of voltage detectors. It serves as a specific variant within ROHM's supervisory circuit portfolio, offering fixed threshold detection without manual reset or watchdog timer functionalities.

Replacement Considerations

BD5241G-1 is listed as a similar specification replacement option.