BU4910F-TR

Supervisors Overview

The BU4910F-TR is a standard voltage detector manufactured by ROHM Semiconductor, designed for monitoring power supply levels in electronic circuits. It features a CMOS output type with a reset active state of Low and operates within a reset active voltage range of 0.7 to 7 V. The device has a typical under-voltage detection voltage of 1.0 V with a precision of ±1%. It consumes a circuit current of 0.40 μA when ON and 0.55 μA when OFF at VDET=4.8V. The component supports an L output current of 3.3 mA (LowVol) and 6.5 mA (HighVol), with a hysteresis voltage of VDET x 0.05. It functions reliably across a temperature range of -40°C to 125°C and is housed in a compact SOP4 package measuring 2.0x2.1 mm.

Supervisors Feature Summary

• CMOS output interface providing digital reset signals
• Compact SOP4 surface-mount packaging for space-constrained designs
• Wide operating voltage range supporting various system rails
• High accuracy detection threshold ensuring reliable supervision

Supervisors Applications

• Power supply monitoring in portable devices
• System reset generation in embedded controllers
• Voltage supervision in industrial control units
• Battery-powered equipment protection circuits

Supervisors Procurement Notes

Verify the specific suffix F against the manufacturer's latest documentation to confirm pinout and electrical characteristics match your design requirements. Confirm RoHS compliance status as indicated in official datasheets. Check for any obsolescence notices or last-time-buy statuses directly from authorized distributors before finalizing procurement plans.

Supervisors Selection Notes

Select this component when a low-power, high-accuracy voltage supervisor is required in a minimal footprint. Ensure the 1.0 V detection threshold aligns with your system's minimum operating voltage. Verify that the CMOS output drive capability meets the input requirements of the downstream logic or microcontroller reset pin without additional buffering.

Supervisors Part Context

This part belongs to the BU49xx series of standard voltage detectors from ROHM Semiconductor. These components are engineered for general-purpose power management applications where precise voltage monitoring is critical. The series offers various detection thresholds and package options to suit different design constraints while maintaining consistent performance characteristics across the family.

Supervisors Replacement Considerations

BD5210G-1 is listed as a similar specification replacement. Note differences in package type (SSOP5 vs SOP4) and output configuration (Open drain vs CMOS). Verify compatibility with existing PCB layout and circuit design before substitution.