BD5231G-2MTR

Overview

The BD5231G-2MTR is a Nano Energy™ CMOS reset IC featuring an adjustable delay timer controlled by an external capacitor. It provides under-voltage detection with a typical threshold of 3.1V and ±2.5% precision. The device operates within a supply voltage range of 0.8V to 6V, consuming 270nA in the OFF state. It offers an open-drain output capable of sourcing 2mA and sinking 1mA. Qualified for AEC-Q100 Grade 1, it functions from -40°C to +105°C in an SSOP-5 package.

Feature Summary

• Adjustable reset delay time determined by external capacitor connection
• High-precision voltage detection with ±2.5% accuracy tolerance
• Ultra-low power consumption suitable for battery-operated systems
• Automotive-grade reliability with AEC-Q100 qualification

Applications

• Automotive electronic control unit supervision
• Battery-powered device power management
• Microcontroller system reset generation
• Under-voltage protection circuits

Procurement Notes

Verify the specific suffix '2MTR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the AEC-Q100 Grade 1 qualification meets the functional safety requirements for the intended automotive application environment. Ensure the external capacitor selection aligns with the desired delay timing specifications defined in the official datasheet.

Selection Notes

Select this component when an adjustable reset delay is required rather than a fixed internal timer. Choose the open-drain output configuration if interfacing with logic levels different from the supply voltage. Consider the ±2.5% detection precision for applications requiring tight voltage monitoring thresholds compared to standard industrial grade alternatives.

Part Context

This part belongs to ROHM's Nano Energy™ series of CMOS reset ICs designed for low-power applications. It replaces older variants like the BD5231G which are no longer recommended for new designs. The series emphasizes high precision and low current consumption, targeting modern automotive and industrial electronics where power efficiency and reliability are critical constraints.

Replacement Considerations

The BD5231G-1TR is a recommended replacement with similar pinout and package but different electrical characteristics including lower circuit current.