BD48E46G-MTR

Overview

The BD48E46G-MTR is a high-accuracy voltage detector designed for automotive applications, manufactured by Rohm Semiconductor. It features a threshold voltage of 4.6V and operates within a supply voltage range of 0.95V to 10V. The device utilizes an open-drain output type with a low-active reset signal. It includes a fixed reset delay timer of 100 microseconds and lacks manual reset or watchdog functions. Packaged in a compact SSOP-5 format, it supports surface-mount installation and complies with RoHS standards.

Feature Summary

• High accuracy voltage detection suitable for automotive environments
• Open-drain output configuration with low-active reset state
• Fixed internal reset delay timer for stable power-up sequencing
• Compact SSOP-5 package optimized for space-constrained designs

Applications

• Automotive electronic control unit (ECU) power monitoring
• Battery voltage supervision in vehicle systems
• Microprocessor reset circuit generation
• Power management IC supervision

Procurement Notes

Verify the component status as Not Recommended for New Designs (NRND). Confirm that current inventory meets long-term production requirements, as future availability may be limited. Ensure compatibility with existing PCB footprints and validate electrical parameters against system specifications before finalizing procurement decisions for ongoing projects.

Selection Notes

Select this component when a precise 4.6V threshold is required for automotive-grade voltage supervision. The open-drain output allows flexible interfacing with various logic levels. Consider the fixed 100us delay for timing constraints. Evaluate alternative parts from the same family if different thresholds or adjustable delays are needed, ensuring package compatibility remains consistent.

Part Context

This part belongs to the BD48Exx series of voltage detectors from Rohm Semiconductor, specifically tailored for automotive use. It shares characteristics with other variants like the BD48E24G-MTR but differs in threshold voltage. The series emphasizes high precision and reliability for critical automotive electronics, utilizing copper wire bonding technology for enhanced durability.

Replacement Considerations

BD48E46G-TR is a parameter-equivalent alternative within the same product line. BD5246G-2MTR and BD5246G-TR are also listed as parameter-equivalent substitutes, offering similar functionality with potentially different operational characteristics.