BU4227FVE-TR

Overview

The BU4227FVE-TR is a supervisory circuit voltage detector manufactured by Rohm Semiconductor. It features a detection threshold voltage of 2.7V and operates within a supply voltage range of 0.7V to 7V. The device provides an open-drain output with a low-active reset signal. It includes an adjustable delay timer for reset timing control. The component supports surface mount installation in a 5-VSOF package and functions reliably across a temperature range of -40°C to 125°C.

Feature Summary

• Provides simple reset or power-on reset functionality with an open-drain output configuration.
• Features an adjustable delay timer allowing customizable reset timing via external components.
• Operates over a wide supply voltage range from 0.7V to 7V with high detection accuracy.

Applications

• Microprocessor system reset circuits
• Portable equipment power management
• Battery-operated device supervision

Procurement Notes

Verify the specific suffix and packaging type when ordering, as availability may vary between reel and cut tape formats. Confirm RoHS compliance status and environmental certifications prior to integration. Check current lifecycle status as this part may be subject to discontinuation notices. Ensure compatibility with existing PCB footprint designs for the VSOF-5 package.

Selection Notes

Select this component for applications requiring precise under-voltage detection with flexible reset timing. The adjustable delay feature allows optimization for specific system startup requirements. Consider the open-drain output capability for interfacing with various logic levels. Evaluate thermal performance within the specified operating temperature range for reliable long-term operation.

Part Context

This device belongs to the BU42xx series of voltage detectors from Rohm Semiconductor. It is designed for general-purpose power supply monitoring in compact electronic systems. The VSOF-5 package offers a small form factor suitable for space-constrained designs. It serves as a critical component for ensuring stable system initialization and protection against abnormal voltage conditions.

Replacement Considerations

BD5227G-1TR is a recommended replacement with similar pinout and specifications. BD5227G-2CGTR is another manufacturer-recommended alternative. Verify package compatibility and electrical parameter alignment before substitution.

FAQ

What is the detection threshold voltage for the BU4227FVE-TR?

The typical detection threshold voltage is 2.7V.

Is the reset output active high or active low?

The reset output is active low with an open-drain configuration.

Can the reset delay time be adjusted?

Yes, the reset delay time is adjustable using an external resistor and capacitor.