BD5223G-TR

Overview

The BD5223G-TR is a voltage detector IC from Rohm Semiconductor, designed for monitoring single-channel power supply voltages. It features an adjustable reset delay timer and an open-drain output active low. The typical under-voltage detection threshold is 2.3V with a precision of ±1%. The reset active voltage range spans from 0.95V to 10V. Operating current is 0.85μA when Vdet=4.8V. The device supports a temperature range of -40°C to 105°C and is housed in a compact SSOP5 package. It is marked as not recommended for new designs.

Feature Summary

• Adjustable reset delay timer functionality allows customization of response timing relative to voltage thresholds.
• Open-drain output configuration provides flexibility for interfacing with various logic levels while maintaining low active state reset signaling.
• Wide operating voltage range enables reliable detection across diverse power supply conditions from 0.95V up to 10V.

Applications

• Monitoring microprocessor power supply rails for under-voltage conditions
• Providing reset signals for digital logic circuits during power-up or brown-out events
• Battery-powered system supervision where low current consumption is critical

Procurement Notes

Verify the specific ordering suffix (e.g., TR vs G) to ensure correct packaging format. Confirm RoHS compliance status as per latest datasheet revisions. Check supply status carefully as this component is designated not recommended for new designs; alternative parts may be required for long-term projects. Validate pinout compatibility if replacing existing implementations.

Selection Notes

Select this component only if its specific 2.3V threshold and adjustable delay characteristics match the target circuit requirements. Consider the open-drain output limitation when designing pull-up resistor networks. Evaluate the SSOP5 package size constraints against available PCB real estate. Review the complete electrical specifications including hysteresis and operating current limits before finalizing the design.

Part Context

This part belongs to the BD52xx series of voltage detectors manufactured by Rohm Semiconductor. These devices are specialized supervisory integrated circuits intended for protecting sensitive electronic loads from unstable power conditions. The series emphasizes low power consumption and precise voltage monitoring capabilities within a small footprint suitable for portable and industrial applications.

Replacement Considerations

BD5223G-1TR is listed as a similar level replacement with the same pinout and package. Verify functional equivalence regarding delay adjustability and output type before substitution. Ensure thermal and electrical ratings remain compatible with the original application environment.

FAQ

What is the reset active state of the BD5223G-TR?

The reset output is active low, meaning it pulls the output line low when the monitored voltage falls below the detection threshold.

Does the BD5223G-TR include a manual reset function?

No, the BD5223G-TR does not feature a manual reset input; the reset signal is generated automatically based on the detected voltage level.

Is the BD5223G-TR suitable for automotive applications?

No, the datasheet specifies that this component is not qualified for automotive use.