BU4947FVE-TR

Supervisors Overview

The BU4947FVE-TR is a standard CMOS voltage detector manufactured by ROHM Semiconductor. It operates within a supply voltage range of 0.7 V to 7 V and features a fixed detection threshold of 4.7 V with ±1% accuracy. The device provides a low-active CMOS output without manual reset or watchdog timer functions. It consumes a typical quiescent current of 550 nA and includes hysteresis for noise immunity. The component is housed in a compact VSOF-5 package and supports an operating temperature range from -40°C to +125°C.

Supervisors Feature Summary

• CMOS output structure providing low-active signal generation
• Ultra-low current consumption for battery-powered applications
• Built-in hysteresis to prevent output oscillation during voltage transitions

Supervisors Applications

• Portable electronic devices requiring efficient power management
• Microprocessor system reset circuits
• Battery-operated equipment monitoring

Supervisors Procurement Notes

Verify the specific suffix and package variant against the official datasheet, as ordering codes may differ slightly across distributors. Confirm RoHS compliance status directly with the manufacturer documentation. Check for end-of-life notifications or last-time-buy statuses before finalizing procurement plans.

Supervisors Selection Notes

Select this component when a fixed 4.7 V threshold with high precision is required. The CMOS output type suits applications needing direct logic interfacing without external pull-up resistors. Ensure the 7 V maximum supply voltage aligns with the target system's power rails.

Supervisors Part Context

This part belongs to the BU49xx series of standard voltage detectors designed for general-purpose supervision. The series offers various detection voltages in 0.1 V increments. The BU4947FVE-TR specifically targets mid-range voltage monitoring needs within the broader portfolio of low-power reset ICs.

Supervisors Replacement Considerations

BD5247G-1TR is listed as a recommended replacement with similar specifications.