BD46302G-TR

Overview

The BD46302G-TR is a voltage detector IC from the BD46 series by ROHM Semiconductor, housed in a 5-pin SSOP package. It features a fixed threshold voltage of 3.0 V with ±1% accuracy and a reset delay time of 200 ms. The device operates within a supply voltage range of 0.95 V to 10 V and supports manual reset functionality. It draws a typical circuit current of 0.80 μA at VDET=4.8V. The output is CMOS type, active low, with an overvoltage threshold of 3.03 V. It functions without a watchdog timer or battery backup switch across a temperature range of -40°C to +105°C.

Feature Summary

• Provides precise voltage monitoring with a fixed 3.0 V detection threshold and high accuracy.
• Includes manual reset capability for controlled system recovery during supervision events.
• Delivers a CMOS output signal with a fixed 200 ms delay to ensure stable power conditions.

Applications

• Microprocessor and microcontroller power supply supervision
• Battery-operated devices requiring voltage level monitoring
• Industrial control systems needing reliable reset signals

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm package integrity and pin alignment against the 5-SSOP specification. Review datasheet revisions for any parameter updates. Ensure compatibility with existing PCB footprint and thermal requirements. Validate that the fixed threshold meets system design specifications before integration.

Selection Notes

Choose this component when a fixed 3.0 V threshold and CMOS output are required. Consider the 200 ms delay for noise immunity needs. Evaluate static current consumption for battery life constraints. Verify operating temperature range suitability for the application environment. Compare manual reset necessity against automatic-only alternatives.

Part Context

Part of the BD46 series voltage detectors designed for general-purpose supervision. Manufactured by ROHM Semiconductor using standard CMOS processes. Commonly used in embedded systems where reliable power management is critical. Competes with similar supervisory ICs offering fixed thresholds and manual reset features.

Replacement Considerations

BD5230G-1TR is a recommended replacement with the same SSOP-5 package. Note differences in output type (open drain vs. CMOS) and adjustable delay. Verify electrical compatibility before substitution.