BD4733G-TR

Overview

The BD4733G-TR is a standard voltage detector manufactured by ROHM Semiconductor, designed for supervisory circuit applications. It features an open collector output type and operates within a reset active voltage range of 0.85 to 10 V. The device provides a typical under-voltage detection voltage of 3.3 V with a precision of ±1%. It consumes 1.5 μA in the ON state and 1.6 μA in the OFF state. The component includes a hysteresis voltage of 0.05 V and supports an L output current of 15 mA at low voltage. It functions without a manual reset or watchdog timer and lacks adjustable delay timers.

Feature Summary

• Provides precise monitoring of power supply voltages using an open collector output structure.
• Operates across a wide reset active voltage range suitable for various system requirements.
• Maintains high detection accuracy with minimal static current consumption during operation.

Applications

• Supervisory circuits requiring fixed voltage threshold monitoring
• Microprocessor reset systems with open collector interface compatibility
• Power management ICs needing low quiescent current performance

Procurement Notes

Verify the specific ordering suffix TR against official ROHM documentation to confirm tape-and-reel packaging specifications. Ensure the SSOP5 package dimensions match the target PCB footprint. Confirm RoHS compliance status directly from the manufacturer's latest datasheet before finalizing procurement plans.

Selection Notes

Select this component when an open collector output is required rather than an open drain configuration. Consider the higher static current consumption compared to newer series if battery life is critical. Verify that the absence of a reset delay timer aligns with the system's startup timing requirements.

Part Context

This part belongs to the BD47 series of standard voltage detectors from ROHM Semiconductor. It serves as a legacy component often replaced by newer generations like the BD52 series which offer improved current efficiency and adjustable delays while maintaining similar package footprints.

Replacement Considerations

The BD5233G-1 is documented as a recommended replacement with the same SSOP5 package. Note differences in output type (open drain vs open collector) and significantly lower current consumption in the substitute model.