BD4929G-TR

Overview

The BD4929G-TR is a standard voltage detector manufactured by ROHM Semiconductor, designed for monitoring single power supply lines. It operates within a supply voltage range of 0.95 V to 10 V and features a typical under-voltage detection threshold of 2.9 V with ±1% precision. The device utilizes a CMOS output type and lacks manual reset or watchdog timer functions. It is housed in an SSOP-5 package with dimensions of 2.9x2.8 mm and supports an operating temperature range from -40°C to +105°C.

Feature Summary

• Provides precise voltage supervision with high accuracy thresholds
• Features low-power CMOS output interface for digital logic compatibility
• Compact surface-mount packaging suitable for space-constrained designs

Applications

• Microcontroller system reset circuits
• Battery-powered device power management
• Embedded system voltage monitoring

Procurement Notes

Verify the current lifecycle status as Not Recommended for New Designs (NRND) before procurement. Confirm that existing inventory sources are reliable for legacy projects. Ensure replacement part numbers like BD5229G-1TR are evaluated if new design implementation is required. Check RoHS compliance documentation for specific manufacturing batches.

Selection Notes

Select this component when a fixed 2.9 V threshold with CMOS output is required. Consider the BD5229G-1TR for open-drain outputs or adjustable delays. Evaluate static current consumption against system power budgets. Verify package compatibility with PCB footprint requirements.

Part Context

This part belongs to the BD49 series of standard voltage detectors from ROHM Semiconductor. It is positioned as a legacy component for existing designs rather than a primary choice for new developments. The series focuses on basic voltage monitoring without advanced features like watchdogs.

Replacement Considerations

BD5229G-1TR is a recommended replacement with the same SSOP-5 package.