BU46K264G-TL

Overview

The BU46K264G-TL is a voltage detector IC from the ROHM BU45/BU46 series, designed for supervisory circuit applications. It features a CMOS output type and monitors a single input channel with a precise threshold voltage of 2.6 V. The device operates within a supply voltage range up to 6 V and maintains an accuracy of 1%. It incorporates a built-in reset delay timer of 400 ms, eliminating the need for external capacitors. Key electrical specifications include a quiescent current of 2.8 uA and power dissipation of 700 mW. The component supports surface mount installation in an SSOP-3 package and functions reliably across an operating temperature range from -40 C to +105 C.

Feature Summary

• Built-in counter timer delay circuit removes requirement for external delay-setting capacitors
• High detection accuracy maintained at 1% tolerance level
• Ultra-low current consumption design suitable for battery-powered systems
• CMOS output configuration ensures direct interface compatibility

Applications

• Portable electronic devices requiring low standby current
• Battery-operated equipment needing reliable voltage supervision
• Embedded systems utilizing compact surface-mount packaging
• Industrial control units operating in extended temperature environments

Procurement Notes

Verify component authenticity through authorized distribution channels due to end-of-life status. Confirm RoHS compliance details via official datasheet documentation. Check regional availability restrictions as sales may be limited in certain territories. Ensure storage conditions account for moisture sensitivity classification prior to assembly processing.

Selection Notes

Select this variant when a fixed 2.6 V threshold is required for system monitoring. Consider the integrated 400 ms delay for noise immunity without external components. Evaluate the SSOP-3 footprint for space-constrained PCB layouts. Compare against other series members if different voltage thresholds or delay times better match specific application requirements.

Part Context

This component belongs to the BU45/BU46 family of highly accurate voltage detectors manufactured by ROHM Semiconductor. The series offers various threshold options while maintaining consistent low-power characteristics and compact packaging solutions. These devices are engineered for supervisory roles in modern electronics where reliability and minimal component count are critical design factors.

Replacement Considerations

BU46K254G-TL provides a 2.5 V threshold option within the same series. BU46K274G-TL offers a 2.7 V threshold alternative. Both maintain identical package dimensions and electrical characteristics except for the detection voltage level.