BU4337F-TR

Overview

The BU4337F-TR is a voltage detector IC from ROHM Semiconductor, designed for monitoring supply voltages with an adjustable delay time. It features a CMOS output and operates within a reset active voltage range of 0.7 V to 7 V. The typical under-voltage detection threshold is 3.7 V with a precision of ±1%. The device supports a maximum power supply voltage of 7 V and functions across a temperature range of -40°C to +125°C. It consumes 0.40 μA in the ON state and 0.55 μA in the OFF state at VDET=4.8V. The package is VSOF5 (1.6x1.6 mm).

Feature Summary

• Adjustable reset delay timer functionality.
• CMOS output type with low active current consumption.
• Wide operating voltage range supporting up to 7 V.

Applications

• Portable equipment requiring low power monitoring.
• Battery-powered systems needing voltage supervision.
• General electronic circuits requiring reset signal generation.

Procurement Notes

Verify component authenticity through authorized channels as this part may be subject to obsolescence or last-time buy status. Confirm exact ordering suffixes match design requirements. Check RoHS compliance documentation for environmental regulations. Ensure thermal management aligns with specified junction temperature limits during operation.

Selection Notes

Select this component when an adjustable delay timer is required alongside low quiescent current. Compare against BD5237G-1 for pinout compatibility if transitioning designs. Consider the VSOF5 package size constraints versus alternative SSOP packages. Verify that the 3.7 V detection threshold meets system voltage specifications.

Part Context

This part belongs to the BU42(43)xxF series of voltage detectors. It is often compared with the BD5237G-1 as a recommended alternative with similar pinouts but different packaging and output types. The series focuses on low-power applications with precise voltage monitoring capabilities.

Replacement Considerations

BD5237G-1 is listed as a recommended replacement with the same pinout. Note differences in package type (SSOP5 vs VSOF5) and output structure (Open drain vs CMOS). Verify electrical parameter compatibility before substitution.

FAQ

What is the typical under-voltage detection voltage for the BU4337F-TR?

The typical under-voltage detection voltage is 3.7 V.

Does the BU4337F-TR include a manual reset function?

No, the BU4337F-TR does not have a manual reset function.