BD45372G-TR

Overview

The BD45372G-TR is a supervisory circuit manufactured by ROHM Semiconductor, functioning as a voltage detector with a fixed threshold of 3.7 V. It operates within a supply voltage range up to 10 V and features an open-drain output type. The device includes manual reset capability and a fixed reset delay time of 200 ms. It does not incorporate a watchdog timer or battery backup switch. The component exhibits high accuracy with a detection precision of ±1% and maintains low static current consumption. It supports surface mount installation in an SSOP-5 package and functions reliably across an extended temperature range from -40°C to +105°C.

Feature Summary

• Provides precise voltage monitoring with a fixed 3.7 V detection threshold and ±1% accuracy.
• Features manual reset functionality allowing external control over the reset state.
• Delivers stable system initialization through a fixed 200 ms reset delay timer.
• Ensures reliable operation in harsh environments with an extended industrial temperature range.

Applications

• Microprocessor system power supply supervision
• Portable equipment voltage monitoring
• Industrial control system reset generation

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm package integrity and pin alignment for SSOP-5 compatibility. Validate datasheet revisions against design requirements. Ensure storage conditions meet manufacturer specifications to prevent degradation. Cross-reference replacement options if long-term availability is critical for production continuity.

Selection Notes

Choose this component when a fixed 3.7 V threshold with manual reset is required. Consider the open-drain output for flexible logic interfacing. Evaluate the 200 ms delay against system startup timing needs. Assess the SSOP-5 footprint for PCB layout constraints. Verify temperature range suitability for the intended operating environment.

Part Context

This part belongs to the BD45 series of voltage detectors from ROHM Semiconductor. It shares functional similarities with other models in the family but is distinguished by its specific 3.7 V threshold and manual reset feature. The series focuses on providing reliable supervisory solutions for various electronic applications with compact packaging and low power consumption characteristics.

Replacement Considerations

BD5237G-1 is listed as a recommended replacement with the same SSOP-5 package and 3.7 V threshold. Note that the substitute offers adjustable delay instead of fixed delay and lacks manual reset capability. Verify electrical parameter compatibility before substitution.