BD4936G-TR

Overview

The BD4936G-TR is a CMOS output voltage detector IC from ROHM Semiconductor, designed for monitoring single power supply rails. It features a typical threshold voltage of 3.6 V with an overvoltage detection limit of 3.636 V and accuracy of ±1%. The device operates within a supply voltage range of 0.95 V to 10 V, consuming a static current of approximately 800 nA at 4.8 V. It offers a reset delay time of 100 µs and supports an operating temperature range from -40°C to +105°C. Packaged in SSOP-5, it provides low-power supervision for digital circuits.

Feature Summary

• CMOS output interface for direct logic integration
• High precision voltage detection with ±1% accuracy
• Low static current consumption for power efficiency
• Integrated reset delay timer for stable signal generation

Applications

• Processor supervisor circuits requiring precise voltage monitoring
• Battery-powered devices needing low quiescent current supervision
• Embedded systems with single-rail power architecture
• Industrial control units operating in extended temperature ranges

Procurement Notes

Verify the obsolete status and NRND designation before procurement. Confirm availability through authorized distributors as standard stock may be limited. Ensure the SSOP-5 package matches PCB footprint requirements. Validate that the 3.6V threshold aligns with system design specifications. Check RoHS compliance documentation for regulatory adherence.

Selection Notes

Select this component when a fixed 3.6V threshold is required for CMOS-compatible logic interfaces. Consider the 100µs reset delay for noise immunity in sensitive applications. Evaluate the 800nA static current against total system power budgets. Compare against replacement options like BD5236G-1 if open-drain outputs or adjustable delays are needed instead.

Part Context

This part belongs to the BD49 series of standard voltage detectors manufactured by ROHM Semiconductor. It serves as a legacy component for existing designs, having been superseded by newer generations such as the BD52xx series. The series focuses on providing reliable supervision for microprocessors and memory devices in consumer and industrial electronics.

Replacement Considerations

BD5236G-1TR is a recommended replacement offering the same SSOP-5 package and 3.6V threshold. Note differences include open-drain output versus CMOS, adjustable delay versus fixed 100µs, and lower current consumption.