BD4946G-TR

Overview

The BD4946G-TR is a standard CMOS voltage detector IC from ROHM Semiconductor, designed for processor supervision. It features a detection voltage of 4.6V with ±1% accuracy and an active low CMOS output. The device operates within a supply voltage range of 0.95V to 10V and consumes ultra-low current (0.60µA typical at Vs=4.8V). It includes hysteresis functionality and is housed in a compact SSOP5 package.

Feature Summary

• High-accuracy voltage detection with ±1% tolerance
• Ultra-low current consumption for power efficiency
• Active low CMOS output interface
• Integrated hysteresis to prevent output oscillation

Applications

• Microcontroller reset circuits
• Logic circuit supervision
• Processor supervisor applications

Procurement Notes

Verify the component status as Not Recommended for New Designs (NRND) before integration. Confirm that the replacement part BD5246G-1TR meets all electrical and mechanical requirements if this specific part number is unavailable or discontinued for new production runs.

Selection Notes

Select this component for applications requiring precise voltage monitoring with minimal power draw. Ensure the system supply voltage remains within the 0.95V to 10V operating range. Consider the active low output polarity when designing the interfacing logic circuitry.

Part Context

This part belongs to the BD49xxx series of standard CMOS voltage detectors. It shares the SSOP5 package form factor with similar devices but differs in output type and detection voltage settings compared to other series members like the BU49xxg or BD48xxg lines.

Replacement Considerations

The BD5246G-1TR is a confirmed substitute with the same SSOP5 package. Note differences in output type (Open Drain vs CMOS) and reset delay timer availability when migrating designs.