BU4215F-TR

Overview

The BU4215F-TR is a supervisory circuit voltage detector manufactured by ROHM Semiconductor. It features an adjustable delay timer and operates within a supply voltage range of 0.7 V to 7 V. The typical under-voltage detection threshold is 1.5 V with a precision of ±1%. The device utilizes an open-drain output type and maintains a reset active state of Low. It functions without manual reset or watchdog timer capabilities. The component supports a maximum operating temperature of 125 °C and a minimum of -40 °C, housed in a SOP-4 package.

Feature Summary

• Adjustable delay timer functionality for customized reset timing
• Open-drain output configuration compatible with various logic levels
• High accuracy voltage detection with ±1% precision

Applications

• Portable electronic devices requiring low voltage monitoring
• Battery-powered systems needing power supply support
• Embedded circuits utilizing microcontroller reset supervision

Procurement Notes

Verify the specific suffix and package variant against the official datasheet before procurement. Confirm that the ordering part number matches the required tape and reel specifications. Ensure compatibility with the target application's voltage range and thermal requirements. Check current supply status as availability may vary by region.

Selection Notes

Select this component when an adjustable delay timer is required alongside precise voltage detection. The open-drain output allows flexibility in interfacing with different logic families. Consider the wide operating temperature range for industrial or automotive environments where standard commercial grades are insufficient.

Part Context

This part belongs to the BU42xxxF series of voltage detectors from ROHM. These components are designed for power supply monitoring in portable and battery-operated equipment. The series offers various detection voltages and package options to suit different design constraints while maintaining low power consumption characteristics.

Replacement Considerations

BD5215G-1 is listed as a recommended replacement with the same pinout.