BD45385G-TR

Overview

The BD45385G-TR is a voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-input power supply lines. It operates within a maximum supply voltage of 10 V and features a fixed threshold voltage of 3.9 V with an accuracy of 1%. The device provides an open-drain output and includes a manual reset function without a watchdog timer. It supports a reset delay time of 50 ms and maintains low static current consumption. The component functions reliably across an extended temperature range from -40°C to +105°C and is housed in an SSOP-5 surface-mount package.

Feature Summary

• Monitors single input voltage with high precision detection capability
• Provides open-drain output signal compatible with digital logic interfaces
• Supports manual reset functionality for controlled system recovery

Applications

• Processor supervisor circuits requiring stable voltage monitoring
• Embedded systems needing reliable power-on reset generation
• Industrial control units operating in extended temperature environments

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential availability constraints. Confirm RoHS compliance status and specific manufacturing lot details prior to integration. Ensure packaging specifications match production requirements. Cross-reference datasheet revisions to guarantee parameter consistency with design specifications before finalizing procurement orders.

Selection Notes

Select this component when a fixed 3.9 V threshold with 1% accuracy is required for single-channel voltage supervision. Consider the SSOP-5 package for space-constrained designs. Evaluate the 50 ms reset delay against system startup timing requirements. Verify that the open-drain output configuration aligns with downstream logic interface needs without additional pull-up components.

Part Context

This part belongs to the BD45 series of supervisory circuits from ROHM Semiconductor. The series focuses on low-power voltage detection solutions for portable and industrial electronics. The BD45385G-TR variant specifically targets applications requiring precise 3.9 V monitoring with manual reset capabilities, distinguishing it from variants with different thresholds or automatic reset behaviors.

Replacement Considerations

BD46385G is listed as a similar specification replacement with the same SSOP-5 package. Verify output type differences, as BD46385G may offer CMOS output instead of open-drain. Confirm threshold voltage compatibility and reset delay characteristics before substitution.