BD45312G-TR

Overview

The BD45312G-TR is a voltage detector from the ROHM BD45 series, designed for monitoring single-input power supplies. It features a fixed threshold voltage of 3.1 V with 1% accuracy and an overvoltage detection threshold of 3.131 V. The device provides a manual reset function and generates a reset signal after a fixed delay time of 200 ms. It operates within a supply voltage range of 0.95 V to 10 V and consumes a typical static current of 800 nA. The output is open-drain, housed in an SSOP-5 package, and supports an operating temperature range from -40°C to +105°C.

Feature Summary

• Provides manual reset capability for system control
• Features a fixed delay timer for stable reset generation
• Offers high precision voltage detection with low static current consumption

Applications

• Processor supervisor circuits requiring fixed delay timing
• Battery-powered devices needing low quiescent current monitoring
• Industrial systems operating in extended temperature environments

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm RoHS compliance documentation matches specific manufacturing batches. Ensure ECAD models are updated for PCB layout integration. Check for obsolescence notices from ROHM Semiconductor before finalizing procurement plans.

Selection Notes

Select this component when a fixed 200 ms reset delay is required alongside manual reset functionality. Compare against adjustable delay alternatives if timing flexibility is needed. Verify that the 3.1 V threshold aligns with the target system's under-voltage detection requirements.

Part Context

Part of the BD45 series supervisory circuits, the BD45312G-TR complements other variants like BD45331G-TR by offering a lower detection threshold. It shares the SSOP-5 package and open-drain output architecture common across the family, ensuring pin compatibility for similar voltage levels.

Replacement Considerations

BD5231G-1 is listed as a recommended replacement with similar specifications but offers adjustable delay instead of fixed delay.