BD45E251G-MTR

Overview

The BD45E251G-MTR is a CMOS voltage detector IC from ROHM Semiconductor, designed for automotive applications with AEC-Q100 qualification. It features a fixed detection threshold of 2.5V and a fixed reset delay timer of 100ms. The device operates within a supply voltage range of 0.95V to 10V and offers high accuracy of ±1%. It consumes ultra-low current, typically 0.80µA in the ON state and 0.85µA in the OFF state at VDET=4.8V. The output is an open-drain type with manual reset capability, housed in a compact SSOP-5 package suitable for surface mount installation across a temperature range of -40°C to +105°C.

Feature Summary

• Built-in counter timer eliminates the need for external delay setting capacitors
• Ultra-low current consumption ensures minimal power drain during operation
• Manual reset function allows for active control of the reset state
• Automotive-grade reliability with AEC-Q100 qualification

Applications

• Automotive electronic system supervision
• Microcontroller reset circuit protection
• Battery voltage monitoring in vehicles
• Power supply support circuits

Procurement Notes

Verify component authenticity through authorized distributors due to end-of-life status. Confirm RoHS compliance and AEC-Q100 certification before integration. Check for parameter-equivalent substitutes if original stock is unavailable. Ensure packaging integrity for SSOP-5 components during handling.

Selection Notes

Select this component for applications requiring precise 2.5V threshold detection with fixed timing. Consider the open-drain output compatibility with system logic levels. Evaluate the manual reset feature against automatic reset alternatives. Verify thermal performance within the specified operating temperature range.

Part Context

Part of the BD45Exxxx-M series, which includes various detection voltages and delay options. The series utilizes copper wire bonding technology for enhanced reliability. It shares the SSOP-5 package form factor with similar ROHM voltage detectors, facilitating design reuse across different voltage thresholds.

Replacement Considerations

BD45251G-TR is listed as a parameter-equivalent substitute. Verify pinout compatibility and electrical specifications before substitution. Ensure the replacement maintains AEC-Q100 qualification for automotive use.