BU4828FVE-TR

Supervisors Overview

The BU4828FVE-TR is a CMOS voltage detector IC manufactured by Rohm Semiconductor, designed for monitoring single-input power supply voltages. It features an open-drain output type and operates within a supply voltage range of 0.7V to 7V. The device provides a fixed threshold detection voltage of 2.8V with a precision of ±1%. It includes hysteresis functionality defined as Vs multiplied by 0.05. The component supports a reset active voltage range from 0.95V to 10V and functions at temperatures between -40°C and 105°C. It is housed in a VSOF5 package measuring 1.6x1.6mm with a thickness of 0.6mm.

Supervisors Feature Summary

• CMOS technology enables low current consumption for battery-powered applications
• Open-drain output allows flexible connection to various logic families
• Integrated hysteresis prevents output oscillation during threshold transitions

Supervisors Applications

• Portable electronic devices requiring voltage supervision
• Battery-operated equipment needing power-fail detection
• Microprocessor reset circuits in embedded systems

Supervisors Procurement Notes

Verify the obsolete status and last-time-buy availability before procurement planning. Confirm that the VSOF5 package dimensions match the target PCB footprint. Ensure the open-drain output configuration aligns with the downstream circuit requirements. Validate RoHS compliance documentation for regulatory adherence. Check for recommended replacement parts if long-term supply is required.

Supervisors Selection Notes

Select this component when a fixed 2.8V threshold is required for single-channel monitoring. The VSOF5 package suits space-constrained designs compared to larger SSOP options. Consider the open-drain output requirement for pull-up resistor integration. Evaluate the operating temperature range against environmental conditions. Compare current consumption specifications with alternative low-power detectors.

Supervisors Part Context

This part belongs to the BU48xx series of standard voltage detectors from Rohm Semiconductor. It shares functional similarities with other models like the BD4860FVE but differs in threshold voltage and package type. The series focuses on providing reliable power-supply supervision for digital circuits. The specific suffix indicates the tape-and-reel packaging format for automated assembly.

Supervisors Replacement Considerations

The BD5250G-1TR is listed as a recommended replacement with similar specifications. Note that the substitute uses an SSOP5 package instead of VSOF5, requiring layout adjustments.