BU4809F-TR

Supervisors Overview

The BU4809F-TR is a standard voltage detector manufactured by ROHM Semiconductor, designed for monitoring power supply voltages. It features an under-voltage detection threshold of 0.9V with a precision of ±1%. The reset active voltage range spans from 0.7V to 7V, utilizing an open-drain output type that activates at a low state. The device operates within a temperature range of -40°C to +125°C and consumes a circuit current of 0.40μA when on (at Vdet=4.8V) and 0.55μA when off. Hysteresis is defined as Vdet x 0.05. It is packaged in SSOP-5 and supplied in tape quantities of 3000 units.

Supervisors Feature Summary

• Provides precise under-voltage detection with high accuracy and low hysteresis characteristics.

Supervisors Applications

• Monitoring power supply voltages in electronic circuits.

Supervisors Procurement Notes

Verify the specific ordering suffix and package configuration against official documentation before procurement. Confirm RoHS compliance status and check for any end-of-life or last-time-buy notices associated with this component variant. Ensure the selected part number matches the required tape packing quantity and environmental specifications for your application.

Supervisors Selection Notes

Select this component for applications requiring a fixed 0.9V detection threshold with open-drain output capabilities. Consider the wide operating temperature range and low current consumption for battery-powered or energy-sensitive designs. Verify compatibility with the target system's voltage levels and reset requirements.

Supervisors Part Context

This component belongs to the BU48 series of standard voltage detectors from ROHM Semiconductor. It is part of a family of CMOS voltage detection ICs designed for supervisory functions. The BU4809F-TR specifically offers a 0.9V threshold, distinguishing it from other variants in the series with different detection voltages.

Supervisors Replacement Considerations

BD5209G-1