BD4828G-TR

Overview

The BD4828G-TR is a CMOS voltage detector IC from ROHM Semiconductor, designed for supervisory circuit applications. It features an N-channel open-drain output and provides a fixed under-voltage detection threshold of 2.8V with ±1% precision. The device operates within a supply voltage range of 0.95V to 10V and consumes low current, typically 0.60μA in the ON state and 0.85μA in the OFF state at Vs=4.8V. It includes hysteresis functionality defined as Vs x 0.05 and supports output currents of 0.4mA (Low) and 2mA (High). Packaged in a compact SSOP-5 format, it functions without manual reset or watchdog timer capabilities.

Feature Summary

• Provides precise under-voltage monitoring with high accuracy for system supervision
• Features low power consumption suitable for battery-operated devices
• Includes built-in hysteresis to prevent output oscillation during voltage transitions

Applications

• Processor supervisor circuits requiring stable voltage monitoring
• Battery-powered electronic systems needing under-voltage protection
• General-purpose voltage detection in portable consumer electronics

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific ordering suffixes that may affect packaging or pin configuration. Ensure the source document explicitly identifies this part number to avoid substitution errors with similar family members.

Selection Notes

Select this component when a fixed 2.8V detection threshold is required without adjustable delay timers. It is suitable for designs prioritizing low quiescent current and simple open-drain interfacing. Consider alternative models if manual reset, watchdog functionality, or automotive qualification is necessary for the application.

Part Context

This device belongs to the BD48xxx series of highly accurate, low-current voltage detectors. The series offers various detection voltages ranging from 2.3V to 6.0V in 0.1V increments. All devices in this family share the N-channel open-drain output architecture and are designed for efficient power management in compact electronic systems.

Replacement Considerations

BD5228G-1TR is a recommended replacement offering the same SSOP-5 package and 2.8V detection voltage. It provides improved VDET precision of ±0.9% and adjustable delay timer functionality compared to the original model.