BD5209G-2MTR

Overview

The BD5209G-2MTR is a CMOS voltage detector IC from ROHM Semiconductor, designed for automotive applications. It features an adjustable reset delay timer set by an external capacitor and operates within a supply voltage range of 0.8 V to 6 V. The typical under-voltage detection threshold is 0.9 V with a precision of ±2% (±12 mV). It provides an open-drain output active low, consumes 0.23 µA in the ON state and 0.27 µA in the OFF state, and includes hysteresis of VDET x 0.05. Qualified to AEC-Q100 Grade 1, it functions between -40°C and 105°C.

Feature Summary

• AEC-Q100 qualified for automotive reliability
• Adjustable reset delay via external capacitor
• Ultra-low power consumption in nano energy class
• Open-drain output with built-in hysteresis

Applications

• Automotive electronic control unit monitoring
• Battery voltage supervision systems
• Microprocessor reset circuit generation
• Power management sequence control

Procurement Notes

Verify the specific suffix '2MTR' corresponds to the SSOP-5 tape-and-reel packaging configuration. Confirm that the required detection voltage matches the fixed 0.9 V threshold of this variant, as other thresholds exist in the series. Ensure design compatibility with the open-drain output structure and external delay capacitor requirements before finalizing procurement orders.

Selection Notes

Select this component when a fixed 0.9 V detection threshold is required for automotive-grade supervision. Choose the BD5209G-2MTR over adjustable variants if precise 0.9 V triggering is needed without external resistor dividers. Consider the SSOP-5 package constraints and the necessity for an external capacitor to define the reset delay timing characteristics.

Part Context

This part belongs to the BD52xxG-M series of Nano Energy™ CMOS voltage detectors. It shares the SSOP-5 package and functional architecture with other members like the BD5210G-2MTR, differing primarily in the fixed detection voltage threshold. The series is characterized by high precision and low current consumption suitable for battery-powered automotive electronics.

Replacement Considerations

The BU4209F is listed as a similar level replacement with the same pinout, though it lacks automotive qualification. For direct pin-compatible upgrades within the same family, verify availability of other BD52xxG-2MTR variants with different detection voltages if the 0.9 V threshold does not meet system requirements.