BD5226NVX-2CTL

Overview

The BD5226NVX-2CTL is a Nano Energy™ CMOS reset IC designed for automotive applications, featuring an adjustable delay timer controlled by an external capacitor. It provides a typical under-voltage detection threshold of 2.6V with ±2.5% precision and operates within a reset active voltage range of 0.8V to 6V. The device utilizes an open-drain output type and maintains low power consumption with circuit currents of 0.23µA (ON) and 0.27µA (OFF). It is qualified to AEC-Q100 standards, supports functional safety analysis, and operates across a temperature range of -40°C to 125°C in a compact 4-UDFN package.

Feature Summary

• Adjustable reset delay time set via external capacitor
• High-precision voltage detection with ±2.5% tolerance
• Ultra-low power consumption suitable for battery backup
• Automotive grade qualification with functional safety support

Applications

• Microcontroller unit (MCU) reset circuits in automotive systems
• Voltage monitoring for electronic control units (ECUs)
• Power management supervision in vehicle infotainment systems
• Safety-critical system reset generation requiring adjustable timing

Procurement Notes

Verify the specific suffix 'NVX-2CTL' against the manufacturer's official datasheet to confirm the exact detection voltage, package variant, and tape-and-reel quantity. Ensure compatibility with automotive functional safety requirements if used in safety-related applications. Confirm that the external capacitor selection aligns with the required delay time specifications provided in the technical documentation.

Selection Notes

Select this component when an adjustable reset delay is required rather than a fixed internal timer. The open-drain output necessitates an external pull-up resistor; ensure the pull-up voltage does not exceed the maximum reset active voltage range. Consider the thermal performance of the 4-UDFN package for high-temperature automotive environments and verify that the low standby current meets system power budget constraints.

Part Context

This part belongs to ROHM's Nano Energy™ series of CMOS reset ICs, which are characterized by built-in high-precision, low-current delay circuits. The BD52xx-2C series specifically offers N-channel open-drain outputs, distinguishing it from the BD53xx-2M series which features CMOS outputs. These devices are engineered for automotive use, providing reliable voltage supervision with customizable timing characteristics through external components.

Replacement Considerations

The BD5226G-2MTR is listed as a similar specification alternative within the same product family, offering comparable detection voltage and functionality but in a different SSOP5 package. Verify pinout compatibility and package dimensions before substitution. Other parts in the BD52xx series may serve as substitutes if detection voltage and output type match the design requirements.