BD5225G-TR

Overview

The BD5225G-TR is a voltage detector IC from ROHM Semiconductor, designed for monitoring power supply voltages in automotive and industrial applications. It features a fixed detection threshold of 2.5V with an accuracy of ±1%. The device operates within a supply voltage range of 0.95V to 10V and consumes low current, typically 0.85μA at the detection voltage. It includes an adjustable delay timer controlled by an external capacitor, eliminating the need for internal fixed timing circuits. The output is an N-channel open-drain type, suitable for direct interfacing with digital logic.

Feature Summary

• Adjustable reset delay time via external capacitor connection
• High precision voltage detection with ±1% accuracy
• Low current consumption for energy-efficient operation
• Automotive-grade reliability with AEC-Q100 qualification

Applications

• Microprocessor system reset circuits
• Battery voltage monitoring in automotive electronics
• Power supply supervision for embedded systems
• Watchdog timer trigger sources

Procurement Notes

Verify the specific suffix 'TR' indicates tape and reel packaging when ordering. Confirm the exact detection voltage variant matches the design requirement, as the BD52xx series offers multiple voltage options. Ensure the application circuit includes the recommended external capacitor for the delay timer to function correctly according to the datasheet specifications.

Selection Notes

Select this component when a fixed 2.5V threshold is required with customizable reset timing. Compare against the BD5225G-2MTR if a fixed 55.5ms delay is preferred over an adjustable one. Consider the BD5225G-1 for improved precision or different operating voltage ranges if the standard model does not meet specific system constraints.

Part Context

This part belongs to the BD52xx series of voltage detectors, which are CMOS-based supervisory circuits. The series is characterized by high accuracy and low power consumption, making it suitable for battery-operated devices. The BD5225G-TR specifically provides a 2.5V detection point with an adjustable delay feature, distinguishing it from fixed-delay variants within the same family.

Replacement Considerations

The BD5225G-1 is listed as a recommended replacement with the same pinout and package. Verify compatibility regarding detection voltage precision and operating voltage range before substitution. Other BD52xx models with different thresholds may require schematic adjustments.