BD46312G-TR

Overview

The BD46312G-TR is a voltage detector IC from ROHM Semiconductor, designed for monitoring supply voltages in electronic circuits. It features a fixed delay time of 200 milliseconds for reset generation. The device operates within a detection voltage range of 0.95 V to 10 V and provides a CMOS output type with low-active reset functionality. It supports manual reset input and includes hysteresis voltage set at VDET x 0.05. The component is housed in an SSOP5 package (SOT23-5 reference) and is rated for operation between -40°C and 105°C.

Feature Summary

• Fixed 200ms reset delay timer ensures stable power-up sequencing without external components.
• CMOS output interface allows direct connection to digital logic systems.
• Manual reset capability enables system intervention during fault conditions.
• Wide operating voltage range supports diverse power supply architectures.

Applications

• Microprocessor and microcontroller power supply supervision
• Battery-operated devices requiring reliable reset signals
• Industrial control systems needing fixed delay protection
• Consumer electronics with CMOS logic interfaces

Procurement Notes

Verify the specific suffix and revision level against the official datasheet to ensure compatibility with existing designs. Confirm that the SSOP5 package dimensions match the PCB footprint requirements. Check for any obsolescence notices or last-time-buy status from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when a fixed 200ms delay is required rather than adjustable timing. Ensure the application utilizes CMOS-compatible inputs and outputs. Verify that the 0.95V to 10V detection range covers the target supply voltage. Consider the manual reset feature if system-level override capabilities are necessary for safety or debugging.

Part Context

This part belongs to the BD46 series of voltage detectors from ROHM Semiconductor. It is positioned as a cost-effective solution for basic power monitoring tasks. The series emphasizes simplicity with fixed parameters, contrasting with adjustable or programmable variants in other product lines.

Replacement Considerations

BD5231G-1TR is listed as a recommended replacement with the same SSOP5 package. Note that the alternative offers adjustable delay and open-drain output, which may require circuit modifications.