BD45341G-TR

Overview

The BD45341G-TR is a voltage detector from the ROHM BD45 series, housed in an SSOP-5 package. It features a fixed detection threshold of 3.4V with ±1% precision and a fixed reset delay timer of 100ms. The device supports a manual reset function and provides an open-drain output active low. It operates within a supply voltage range of 0.95V to 10V and maintains a typical circuit current of 0.80μA at VDET=4.8V. The component functions reliably across a temperature range of -40°C to 105°C.

Feature Summary

• Includes a manual reset function for controlled system recovery
• Utilizes a fixed delay timer to prevent false resets during power transitions
• Provides high-precision voltage monitoring with tight tolerance accuracy

Applications

• Microprocessor supervisor circuits requiring stable power sequencing
• Battery-powered devices needing precise under-voltage detection
• Embedded systems utilizing manual reset capabilities for diagnostics

Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging when ordering. Confirm the exact detection voltage variant matches the design requirement, as the BD45 series offers multiple thresholds. Check current supply status, as this model may be subject to last-time-buy notices or discontinuation. Ensure compatibility with existing PCB footprints for the SSOP-5 package.

Selection Notes

Select this component when a fixed 100ms delay is sufficient for the application's noise immunity needs. Choose the BD45341G-TR over adjustable delay variants if circuit simplicity and cost are priorities. Consider the manual reset feature if external push-button recovery is required. Verify that the open-drain output interface aligns with the target microcontroller's input requirements.

Part Context

This part belongs to the BD45 series of voltage detectors by ROHM Semiconductor. The series is characterized by low power consumption and compact SSOP-5 packaging. The BD45341G-TR specifically targets applications requiring a 3.4V threshold with fixed timing characteristics, distinguishing it from adjustable or watchdog-enabled models in the broader family.

Replacement Considerations

The BD5234G-1 is documented as a recommended replacement with the same SSOP-5 package and 3.4V detection voltage. Note that the substitute offers adjustable delay and different current consumption specifications compared to the fixed-delay BD45341G-TR.