BU4315F-TR

Overview

The BU4315F-TR is a voltage detector supervisory circuit manufactured by ROHM Semiconductor, designed for monitoring power supply voltages. It features an adjustable reset delay timer and operates within a reset active 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 a CMOS output type and maintains low current consumption, with circuit current at 0.40 μA (on) and 0.55 μA (off) at Vdet=4.8V. It is housed in a SOP-4 package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Adjustable reset delay timer functionality
• CMOS output interface
• Low power consumption design

Applications

• Power supply voltage monitoring
• Microprocessor reset circuits
• Battery-powered device supervision

Procurement Notes

Verify the specific suffix and package configuration against the official datasheet before procurement. Confirm that the component meets RoHS compliance requirements for your target market. Ensure the ordering part number matches the exact tape and reel specifications required for your manufacturing process. Cross-reference the latest supply status as availability may change.

Selection Notes

Select this component when a precise 1.5 V detection threshold is required with adjustable timing delays. Consider the SOP-4 package constraints and the specified operating temperature range. Evaluate the low standby current benefits for battery-operated systems. Compare against similar pinout alternatives if supply chain flexibility is needed.

Part Context

This component belongs to the BU42(43)xxF series of voltage detectors from ROHM Semiconductor. These devices are engineered for high accuracy and low power applications. The BU4315F-TR specifically offers a fixed detection voltage with user-configurable delay times, distinguishing it from non-adjustable variants in the family.

Replacement Considerations

The BD5215G-1 is listed as a similar level replacement with the same pinout. Verify compatibility regarding the SSOP-5 package difference and ensure the electrical parameters align with system requirements before substitution.