BD4829G-TR

Overview

The BD4829G-TR is a CMOS voltage detector IC from ROHM Semiconductor, designed for processor supervision. It features an N-channel open-drain output with active-low reset signaling. The device monitors a single input voltage and triggers a reset when the supply drops below the 2.9V threshold. It operates within a wide supply voltage range of 0.95V to 10V. The component offers high detection accuracy of ±1% and includes hysteresis to prevent output oscillation during voltage transitions. It functions reliably across an industrial temperature range of -40°C to +105°C.

Feature Summary

• High-precision voltage monitoring with ±1% detection accuracy
• Low current consumption suitable for battery-powered applications
• N-channel open-drain output for flexible logic interfacing
• Built-in hysteresis to ensure stable reset signal integrity

Applications

• Processor supervisor circuits in embedded systems
• Battery-operated electronic devices requiring power management
• Industrial control systems needing reliable voltage monitoring

Procurement Notes

Verify the specific suffix G-TR confirms the SSOP-5 package and tape-and-reel packaging format. Confirm RoHS compliance status matches current regulatory requirements. Check for obsolescence notices as this part may be restricted for new designs. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component when a fixed 2.9V threshold is required without adjustable delay or manual reset features. Compare against the BD5229G-1 series if adjustable delay timers are needed for the same application. Consider the operating temperature range and output drive capability relative to the load connected to the open-drain pin.

Part Context

This device belongs to the BD48xxx series of voltage detectors, which are characterized by low current consumption and high accuracy. The series utilizes CMOS technology to minimize power usage while maintaining precise detection thresholds. It serves as a fundamental supervisory component in various electronic designs requiring simple voltage monitoring.

Replacement Considerations

BD5229G-1TR is a recommended replacement offering similar package dimensions and detection voltage but includes an adjustable delay timer feature.