BD4936FVE-TR

Overview

The BD4936FVE-TR is a voltage detector IC from ROHM Semiconductor, designed for monitoring single power supply lines. It features a CMOS output type with a typical threshold voltage of 3.6V and an accuracy of ±1%. The device operates within a maximum supply voltage of 7V and supports a reset active voltage range from 0.7V to 7V. It functions across a temperature range of -40°C to +125°C. Key electrical characteristics include a static current of approximately 450nA and hysteresis defined as VDET multiplied by 0.05. The component is housed in a VSOF-5 package.

Feature Summary

• CMOS output interface providing push-pull/totem pole drive capability
• High detection accuracy with ±1% threshold voltage precision
• Low static current consumption suitable for battery-powered applications
• Integrated hysteresis to prevent output oscillation during voltage transitions

Applications

• Processor supervisor circuits requiring precise voltage monitoring
• Battery management systems for low-power detection
• Portable electronic devices utilizing CMOS logic interfaces
• General-purpose supervisory circuits in consumer electronics

Procurement Notes

This component is officially listed as obsolete or end-of-life by the manufacturer. Verification of availability through authorized distributors is critical, as stock levels may be limited or non-existent. Ensure that any sourced units are genuine and match the specified VSOF-5 package and RoHS compliance status before integration into production designs.

Selection Notes

Select this part when a fixed 3.6V detection threshold with high precision is required for single-channel monitoring. The CMOS output is suitable for direct interfacing with digital logic without additional pull-up resistors. Consider the operating temperature range and supply voltage limits to ensure compatibility with the target system environment.

Part Context

The BD4936FVE-TR belongs to the BU49 series of standard voltage detectors. This family focuses on providing reliable supervision for microprocessors and memory devices. The specific model offers a balance of low power consumption and accurate detection, fitting into the broader portfolio of ROHM's power management integrated circuits.

Replacement Considerations

BD5236G-1TR is documented as a recommended replacement with similar specifications. Note that the substitute uses an SSOP5 package instead of VSOF-5, which requires mechanical footprint verification. The output type differs (open drain vs. CMOS), necessitating circuit design adjustments.