BD5228NVX-2CTL

Overview

The BD5228NVX-2CTL is a Nano Energy series CMOS reset IC featuring adjustable delay time, designed for automotive applications. It operates with a typical detection voltage of 2.8V and offers ±2.5% precision. The device utilizes an N-ch open drain output with a low active state. Key electrical parameters include a circuit current of 0.23µA in the ON state and 0.27µA in the OFF state. It supports a reset active voltage range from 0.8V to 6V and includes hysteresis defined as VDET multiplied by 0.05. The component is qualified under AEC-Q100 standards.

Feature Summary

• Features adjustable delay timer controlled by an external capacitor for flexible timing configuration.
• Provides high-precision voltage detection with ±2.5% accuracy across the operating temperature range.
• Incorporates ultra-low power consumption characteristics suitable for battery-backed systems.
• Designed specifically for functional safety support in automotive electronic control units.

Applications

• Automotive engine control unit (ECU) power monitoring
• Battery backup system supervision
• Microcontroller reset signal generation in harsh environments

Procurement Notes

Verify that the specific suffix matches the required package and tape/reel specifications for automated assembly. Confirm AEC-Q100 qualification status aligns with project functional safety requirements. Ensure external capacitor selection meets the delay time tolerance specifications provided in the official datasheet. Check for any obsolescence notices or recommended replacement parts from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when an adjustable delay function is required rather than a fixed delay. Compare the 2.8V threshold against other available options in the BD52xx series if different voltage levels are needed. Consider the SSON004R1010 package size constraints relative to PCB layout limitations. Evaluate the low standby current benefits against total system power budgets for portable or automotive applications.

Part Context

This part belongs to ROHM's Nano Energy series, which focuses on ultra-low power consumption CMOS technologies. It is part of the BD52xx family of voltage detectors, distinguished by its adjustable delay capability via external components. The NVX variant indicates a specific small outline package format optimized for space-constrained automotive electronics.

Replacement Considerations

BD5228G-1TR is listed as a similar specification alternative with a different package type.