BD5255G-TR

Overview

The BD5255G-TR is a voltage detector with an adjustable delay time, manufactured by ROHM Semiconductor. It features an under-voltage detection voltage of 5.5V typical and a precision of ±1%. The reset active voltage range spans from 0.95V to 10V, utilizing an open drain output type. The device supports an adjustable delay timer and operates in a low reset active state. It lacks manual reset and watchdog timer functionalities, and is not designated for automotive use. The circuit current is 0.85μA when on (at Vdet=4.8V) and 0.85μA when off. It employs an SSOP-5 package.

Feature Summary

• Features an adjustable delay timer for customized reset timing control.
• Provides precise under-voltage detection with high accuracy specifications.
• Utilizes an open drain output configuration for flexible interface integration.

Applications

• General electronic system power supply monitoring
• Microcontroller reset circuit supervision
• Embedded system voltage level verification

Procurement Notes

Verify the specific ordering part number BD5255G-TR against official ROHM documentation to ensure compatibility with design requirements. Confirm that the SSOP-5 package dimensions and pinout align with the target PCB layout. Check the latest supply status as the component may be subject to production lifecycle changes. Ensure compliance with RoHS directives if required by the application standards. Validate the electrical parameters against the most recent datasheet revision.

Selection Notes

Select this component when a fixed threshold voltage detector does not meet the specific voltage requirement of 5.5V. The adjustable delay feature allows designers to manage transient noise or startup sequences without external components. Consider the open drain output for interfacing with various logic levels. Evaluate the low standby current consumption for battery-powered applications. Compare against similar parts like BD5250G-1 if different detection voltages are needed.

Part Context

The BD5255G-TR belongs to the BD52 series of voltage detectors from ROHM Semiconductor. This series focuses on providing reliable supervision for digital circuits with minimal power consumption. The device is designed for surface-mount applications, offering a compact footprint suitable for modern electronics. It serves as a critical component for ensuring system stability by monitoring power rail integrity.

Replacement Considerations

BD5250G-1 is listed as a similar level part with the same pinout and package. Verify functional differences such as detection voltage before substitution.