BU4312FVE-TR

Overview

The BU4312FVE-TR is a CMOS low voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-input power supply voltages. It operates within a supply voltage range of 0.7 V to 7 V and features an adjustable reset delay time. The device provides a threshold detection voltage of 1.2 V with a precision accuracy of ±1%. It draws a typical operating current of 550 nA and supports an extended industrial temperature range from -40°C to +125°C. The component utilizes a VSOF-5 surface-mount package.

Feature Summary

• CMOS output type for direct logic interface compatibility
• Adjustable reset delay timer functionality
• High detection accuracy with ±1% threshold precision
• Low power consumption suitable for battery-operated systems

Applications

• Portable electronic devices requiring low standby current
• Microprocessor system power supply supervision
• Battery-powered equipment voltage monitoring
• Industrial control circuit protection

Procurement Notes

Verify the obsolete status of this component before integration into new designs. Confirm availability through authorized distributors or secondary markets. Ensure replacement parts meet electrical specifications and pinout compatibility requirements. Check RoHS compliance documentation for regulatory adherence in target regions.

Selection Notes

Select this component when a 1.2 V detection threshold is required with high precision. Consider the VSOF-5 package constraints for PCB layout. Evaluate the 550 nA quiescent current against system power budgets. Verify that the adjustable delay feature meets timing requirements for the monitored circuit recovery sequence.

Part Context

This part belongs to the BU42(43)xxFVE series of voltage detectors. It shares common family characteristics such as CMOS output and adjustable delay timers. The specific suffix indicates the 1.2 V threshold variant within the broader product line. It is distinct from other series members by its specific detection voltage and package configuration.

Replacement Considerations

BD5212G-1TR is a recommended substitute with the same pinout. Verify package differences between VSOF-5 and SSOP-5 during physical implementation.