BU4923F-TR

Supervisors Overview

The BU4923F-TR is a standard CMOS voltage detector from ROHM Semiconductor, featuring a typical under-voltage detection threshold of 2.3V with ±1% precision. It operates within a reset active voltage range of 0.7V to 7V and utilizes a CMOS output type with a low reset active state. The device consumes ultra-low circuit current, specified at 0.40μA (ON) and 0.55μA (OFF) at VDET=4.8V. It includes hysteresis defined as VDET x 0.05 and supports an operating temperature range from -40°C to 125°C.

Supervisors Feature Summary

• High-accuracy voltage detection with ±1% precision
• Ultra-low current consumption for battery-powered applications
• CMOS output interface with low reset active state

Supervisors Applications

• Microprocessor power supply monitoring
• Portable battery-operated equipment supervision
• Multi-output power supply tracking

Supervisors Procurement Notes

Verify the specific suffix 'F' against the manufacturer's latest datasheet to confirm package details and availability status. Confirm RoHS compliance and check for any 'Last Time Buy' notices or recommended replacement parts like the BD5223G-1 series before finalizing procurement plans.

Supervisors Selection Notes

Select this component when a fixed 2.3V threshold with high accuracy is required. Ensure the system logic levels are compatible with the CMOS output. Consider the wide operating temperature range if deployed in industrial environments. Verify that the absence of a manual reset function aligns with the system design requirements.

Supervisors Part Context

This part belongs to the BU49xx series of standard CMOS reset ICs designed for high accuracy and low current consumption. The series offers detection voltages from 0.9V to 4.8V in 0.1V increments. The BU4923F variant specifically targets the 2.3V detection point within this lineup.

Supervisors Replacement Considerations

BD5223G-1 is listed as a recommended replacement with similar specifications, though it features an open-drain output instead of CMOS.