BU4338FVE-TR

Supervisors Overview

The BU4338FVE-TR is a single-channel voltage detector manufactured by ROHM Semiconductor, designed for supervisory circuit applications. It features a fixed under-voltage detection threshold of 3.8 V with a precision of ±1%. The device utilizes a CMOS output type and supports an adjustable reset delay timer to manage system restart timing. It operates within a maximum supply voltage range of 7 V and maintains functionality across an extended temperature range from -40 °C to +125 °C. The component is housed in a VSOF-5 surface-mount package, suitable for compact electronic designs requiring reliable power monitoring.

Supervisors Feature Summary

• Provides precise under-voltage detection with a fixed 3.8 V threshold and high accuracy.
• Features an adjustable reset delay timer for customizable system recovery timing.
• Utilizes a compact VSOF-5 surface-mount package for space-constrained designs.
• Operates reliably across a wide industrial temperature range up to 125 °C.

Supervisors Applications

• Portable electronic devices requiring low-voltage monitoring
• Battery-powered systems needing under-voltage protection
• Industrial control circuits requiring stable power supervision

Supervisors Procurement Notes

Verify the obsolete status of this component before procurement planning. Confirm availability through authorized distributors or secondary markets. Ensure compatibility with existing PCB footprints and design specifications. Check for lead times associated with end-of-life inventory. Validate RoHS compliance documentation if required for specific regulatory standards.

Supervisors Selection Notes

Select this component when a fixed 3.8 V detection threshold is required without manual reset capabilities. Consider the VSOF-5 package size for board layout constraints. Evaluate the adjustable delay feature against system startup requirements. Compare performance metrics such as operating current and hysteresis with alternative supervisory circuits. Ensure the CMOS output type aligns with downstream logic interface needs.

Supervisors Part Context

This part belongs to the BU42(43)xxF series of voltage detectors from ROHM. It is categorized under supervisory circuits and power management ICs. The component is specifically designed for monitoring single-channel power supplies in consumer and industrial electronics. Its design focuses on providing reliable voltage supervision in compact form factors.

Supervisors Replacement Considerations

The BD5238G-1 is listed as a recommended replacement with the same pinout. Verify electrical parameter compatibility, particularly regarding output type differences between CMOS and open drain configurations. Assess package variations and thermal characteristics during substitution planning.

Supervisors FAQ

Does the BU4338FVE-TR include a manual reset function?

No, the component does not support manual reset operations.

What is the output type of this voltage detector?

The BU4338FVE-TR features a CMOS output type.