BD45E231G-MTR

Overview

The BD45E231G-MTR is a fixed-delay voltage detector IC from ROHM Semiconductor, designed for automotive applications with AEC-Q101 qualification. It features a 2.3 V threshold voltage and a fixed 100 ms reset delay timer. The device operates within a supply voltage range of 0.95 V to 10 V and consumes 850 nA. It provides an open-drain output in an SSOP-5 package, ensuring high accuracy of ±1% across the -40°C to +105°C temperature range.

Feature Summary

• Built-in fixed delay timer eliminates external capacitor requirements
• Ultra-low current consumption suitable for battery-powered systems
• High detection accuracy with ±1% precision
• Automotive-grade reliability under AEC-Q101 standards

Applications

• Microprocessor reset circuits in automotive ECUs
• Battery voltage monitoring systems
• Power supply supervision for embedded controllers
• Voltage level detection in safety-critical automotive modules

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm lot traceability and RoHS compliance documentation. Check for obsolescence notices as manufacturer discontinuation may affect long-term availability. Ensure storage conditions meet semiconductor handling standards to prevent degradation prior to assembly.

Selection Notes

Select this component when a fixed delay response is required without external timing components. The open-drain output allows flexible interfacing with various logic levels. Consider the 2.3 V threshold against system operating voltages. Verify that the SSOP-5 package fits the PCB layout constraints. Evaluate the 850 nA current draw against total system power budgets.

Part Context

This part belongs to the BD45ExxxG-M series of CMOS voltage detectors. The series is characterized by counter timer integration and low power consumption. It targets automotive electronics requiring robust supervision with minimal external component count. The MTR suffix indicates tape-and-reel packaging for automated assembly processes.

Replacement Considerations

BD45E231G-M is the non-tape variant of the same electrical specification. BD46E251G-MTR offers similar functionality but with a different threshold voltage. Verify pinout compatibility before substitution. No direct cross-brand equivalents are confirmed in public documentation.