BU4913F-TR

Supervisors Overview

The BU4913F-TR is a standard voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-input power supply rails. It features a CMOS output and operates within a supply voltage range of 0.7 V to 7 V. The device detects under-voltage conditions with a typical threshold of 1.3 V and an over-voltage threshold of 1.313 V, maintaining an accuracy of ±1%. It consumes a maximum operating current of 550 nA and supports a wide industrial temperature range from -40°C to +125°C. Packaged in a compact VSOF5 (SOP-4 equivalent footprint) format, it lacks manual reset or watchdog timer functions.

Supervisors Feature Summary

• CMOS output interface for direct logic compatibility
• High detection accuracy with ±1% precision
• Ultra-low static current consumption for battery efficiency
• Wide operating voltage range supporting low-power systems

Supervisors Applications

• Portable electronic devices requiring low standby current
• Battery-powered equipment needing reliable power supervision
• Industrial control systems operating in extreme temperatures
• Embedded microcontroller reset circuits

Supervisors Procurement Notes

Verify the specific suffix 'F' against official datasheets to confirm package type and pinout configuration, as variations exist within the series. Confirm availability status, as this component may be subject to lifecycle changes such as Last Time Buy or Not Recommended for New Design (NRND). Ensure RoHS compliance documentation matches current regulatory requirements for your target market before finalizing procurement orders.

Supervisors Selection Notes

Select this component when a fixed 1.3 V detection threshold is required without adjustable delay or watchdog features. It is suitable for designs prioritizing minimal quiescent current and high accuracy over programmable timing. Consider the VSOF5 package constraints for PCB layout. Compare against BD5213G-1 if open-drain outputs or adjustable delays are needed instead.

Supervisors Part Context

This part belongs to the BU4913 series of standard voltage detectors from ROHM. It serves as a dedicated supervisory circuit for ensuring stable operation of digital logic by resetting microcontrollers during brown-out events. The series typically includes variants with different detection voltages and packages, sharing common low-power architecture principles.

Supervisors Replacement Considerations

BD5213G-1 is listed as a recommended replacement with similar specifications, though it offers an open-drain output and adjustable delay timer. Verify pinout compatibility and output stage differences before substitution.