BU4828F-TR

Supervisors Overview

The BU4828F-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-channel power supply voltages. It features an open-drain output and operates within a supply voltage range of 0.7 V to 7 V. The device provides a typical under-voltage detection threshold of 2.8 V with a precision of ±1%. It functions without manual reset or watchdog timer capabilities. The component supports surface-mount installation in an SOP-4 package and maintains operation across a temperature range of -40°C to +125°C.

Supervisors Feature Summary

• CMOS technology ensures low current consumption for efficient power management.
• Open-drain output configuration allows flexible interfacing with various logic levels.
• High accuracy voltage detection with specified hysteresis to prevent false triggering.

Supervisors Applications

• Portable electronic devices requiring battery voltage supervision
• Microprocessor system reset circuits
• Embedded systems monitoring critical power rails

Supervisors Procurement Notes

Verify the specific ordering suffix and package variant against the official datasheet before procurement. Confirm that the selected part matches the required detection voltage and output characteristics for your circuit design. Check the current lifecycle status as availability may be limited due to end-of-life classifications.

Supervisors Selection Notes

Select this component when a fixed 2.8V threshold is required for supervisory applications. Ensure the SOP-4 package fits the PCB layout constraints. Verify that the open-drain output aligns with the downstream logic requirements. Consider thermal performance within the specified operating temperature range during integration.

Supervisors Part Context

This part belongs to the BU4828 series of standard voltage detectors from ROHM. It is distinct from other variants like the BU4828G which uses an SSOP-5 package. The F-series typically denotes specific packaging and pinout configurations compared to the G-series equivalents within the same manufacturer lineup.

Supervisors Replacement Considerations

BD5228G-1TR is documented as a replacement option with similar specifications but utilizes an SSOP-5 package instead of SOP-4.