BU46K312G-TL

Overview

The BU46K312G-TL is a voltage detector IC from ROHM Semiconductor, designed for supervisory circuit applications. It features a fixed threshold voltage of 3.1 V with an accuracy of ±1%. The device operates within a supply voltage range up 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 surface mount installation. It functions without manual reset or watchdog timer capabilities. The operating temperature range extends from -40°C to +105°C.

Feature Summary

• Fixed threshold voltage detection at 3.1 V with high precision
• Low power consumption suitable for battery-operated systems
• CMOS output interface for direct logic integration
• Compact SSOP-3 package design for space-constrained layouts

Applications

• Portable electronic devices requiring low standby current
• Battery-powered equipment needing reliable voltage monitoring
• Embedded systems utilizing CMOS logic interfaces
• Industrial control units operating in extended temperature ranges

Procurement Notes

Verify the obsolete status before procurement as this part may be discontinued. Confirm that the SSOP-3 package dimensions match your PCB footprint requirements. Ensure compatibility with the 3.1 V threshold for your specific circuit design. Check for moisture sensitivity handling requirements during storage and assembly processes.

Selection Notes

Select this component when a precise 3.1 V detection level is required. Consider the 2.8 µA quiescent current for energy efficiency needs. The CMOS output simplifies interface design compared to open-drain alternatives. Verify that the 200 ms delay meets your system startup timing constraints.

Part Context

This voltage detector belongs to the BU45/BU46 series from ROHM Semiconductor. The series offers various threshold voltages and packages for different supervisory needs. The BU46K312G-TL specifically targets applications requiring a 3.1 V detection point in a compact form factor.

Replacement Considerations

Check for alternative parts with similar 3.1 V thresholds if availability is an issue. Compare package compatibility and electrical specifications carefully. Ensure any substitute maintains the CMOS output type and low quiescent current characteristics.