BU4327G-TR

Overview

The BU4327G-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for supervisory circuit applications. It features an adjustable reset delay timer and operates within a supply voltage range of 0.7 V to 7 V. The device provides a typical under-voltage detection threshold of 2.7 V with a precision accuracy of ±1%. It utilizes an SSOP-5 surface-mount package and supports a wide operating temperature range from -40°C to +125°C. The component draws a static current of approximately 450 nA and dissipates up to 540 mW.

Feature Summary

• CMOS output type for low power consumption
• Adjustable reset delay timer functionality
• High accuracy voltage detection threshold

Applications

• Microprocessor system reset circuits
• Battery-powered device supervision
• Portable electronic equipment monitoring

Procurement Notes

Verify the specific ordering suffix and package variant when sourcing, as the BU4327G-TR designation indicates a tape-and-reel configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure that the selected component matches the required threshold voltage specifications for the target application design constraints.

Selection Notes

Select this component for designs requiring precise voltage monitoring with customizable reset timing. The adjustable delay feature allows synchronization with system startup sequences. Consider the low quiescent current for battery-operated applications. Verify compatibility with the target PCB footprint and thermal management requirements during the selection process.

Part Context

This part belongs to the BU42(43)xxG series of voltage detectors from ROHM Semiconductor. These components are engineered for reliable performance in compact surface-mount packages. The series offers various threshold options to suit different logic families and power rails, providing flexibility for diverse supervisory circuit implementations across industrial and consumer electronics.

Replacement Considerations

The BD5227G-1 is documented as a replacement with the same pinout and package. Verify electrical parameter alignment before substitution.