BD5244G-2MTR

Overview

The BD5244G-2MTR is a CMOS voltage detector IC from ROHM Semiconductor, designed for automotive applications. It features an adjustable reset delay timer controlled by an external capacitor and operates within a supply voltage range of 0.8V to 6V. The typical under-voltage detection threshold is 4.4V with a precision of ±0.9%. It provides an open-drain output active low, consumes 0.23µA in the ON state and 0.27µA in the OFF state at VDET=4.8V. The device includes hysteresis voltage set to VDET x 0.05 and functions reliably across an operating temperature range of -40°C to 105°C.

Feature Summary

• Adjustable reset delay time via external capacitor connection
• High precision voltage detection with ±0.9% accuracy
• Ultra-low power consumption suitable for battery-operated systems
• Automotive grade qualification ensuring reliability in harsh environments

Applications

• Microprocessor reset circuits in automotive ECUs
• Battery voltage monitoring systems
• Power management supervision in electric vehicles
• Voltage level detection for safety-critical components

Procurement Notes

Verify the specific suffix '2M' against the official ROHM datasheet to confirm the exact detection voltage and package variant. Ensure compatibility with AEC-Q100 standards if required for your automotive application. Cross-reference the ordering number with authorized distributors to avoid counterfeit components. Confirm that the SSOP-5 package dimensions match your PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component when a precise 4.4V detection threshold is required with customizable delay timing. It is suitable for designs needing low standby current and high accuracy in automotive environments. Consider the open-drain output capability for interfacing with various logic levels. Evaluate the external capacitor selection for delay setting to ensure it meets system timing constraints without adding excessive cost or board space.

Part Context

This part belongs to the BD52xxG-2 series of Nano Energy voltage detectors. These ICs are specifically engineered for automotive use, offering high reliability and low power consumption. The series supports various detection voltages and output types, making it versatile for different supervisory needs in vehicle electronics. The BD5244G-2MTR represents a specific configuration optimized for 4.4V detection with adjustable delay functionality.

Replacement Considerations

BD5244G-1TR is listed as a recommended replacement with the same pinout and package. Verify functional equivalence regarding detection voltage and delay characteristics before substitution.