BU4847F-TR

Supervisors Overview

The BU4847F-TR is a standard voltage detector IC manufactured by ROHM Semiconductor, designed for monitoring power supply voltages in electronic circuits. It features an open-drain output type and operates within a reset active voltage range of 0.7 V to 7 V. The typical under-voltage detection threshold is set at 4.7 V with a precision of ±1%. The device supports a low hysteresis voltage defined as VDET multiplied by 0.05. It functions without a manual reset or watchdog timer capabilities. The circuit current consumption is specified at 0.40 μA when ON (at VDET=4.8V) and 0.55 μA when OFF. The component is housed in a VSOF5 package with dimensions of 1.6x1.6 mm and a thickness of 0.6 mm.

Supervisors Feature Summary

• Provides precise under-voltage detection with high accuracy for system supervision
• Features ultra-low current consumption suitable for battery-powered applications
• Utilizes a compact surface-mount package design for space-constrained layouts

Supervisors Applications

• Power supply monitoring in portable electronic devices
• System reset generation in embedded microcontroller circuits
• Voltage supervision in consumer electronics hardware

Supervisors Procurement Notes

Verify the obsolete status of this component before integration into new designs. Confirm availability through authorized distributors for legacy projects. Ensure compatibility with existing PCB footprints and reflow profiles. Check for end-of-life notifications from the manufacturer. Validate that replacement parts meet equivalent electrical specifications if sourcing alternatives.

Supervisors Selection Notes

Consider the VSOF5 package size and pin configuration during layout design. Evaluate the open-drain output requirement for pull-up resistor selection. Assess the operating temperature range against environmental conditions. Review the hysteresis characteristics to prevent false triggering in noisy environments. Compare current consumption metrics with other supervisory ICs for efficiency optimization.

Supervisors Part Context

This component belongs to the BU48xx series of voltage detectors from ROHM Semiconductor. It is part of a family of CMOS supervisory circuits designed for reliable power management. The specific model targets applications requiring accurate voltage monitoring with minimal power impact. It serves as a critical element in ensuring stable operation of digital systems.

Supervisors Replacement Considerations

The BD5247G-1TR is listed as a similar specification replacement with a recommended package status. Note differences in package type (SSOP5 vs VSOF5) and potential variations in reset delay timer functionality. Verify pinout compatibility and electrical parameter alignment before substitution.