BD45351G-TR

Overview

The BD45351G-TR is a CMOS voltage detector IC from the ROHM BD45 series, designed for monitoring single power supply rails. It features a fixed detection threshold of 3.5 V with ±1% accuracy and a manual reset function. The device operates within a supply voltage range of 0.95 V to 10 V and includes a fixed reset delay time of 100 ms. It utilizes an open-drain output type and consumes a typical circuit current of 0.80 μA at VDET=4.8V. The component is housed in a compact SSOP-5 package and supports an operating temperature range from -40°C to +105°C.

Feature Summary

• Integrates a manual reset function allowing external control over the reset state.
• Provides high-precision voltage monitoring with a fixed threshold and tight tolerance.
• Features low power consumption suitable for battery-operated applications.
• Includes a fixed delay timer to prevent false resets during power transitions.

Applications

• Microprocessor system supervision
• Portable electronic devices requiring low standby current
• Industrial control systems needing reliable power monitoring

Procurement Notes

Verify the specific suffix and packaging configuration against the official datasheet to ensure compatibility with automated assembly processes. Confirm that the component status aligns with project lifecycle requirements, as availability may vary by region. Cross-reference the pinout and electrical characteristics with the target design specifications before finalizing procurement orders.

Selection Notes

Select this component when a fixed 3.5 V threshold and manual reset capability are required. Ensure the application environment stays within the specified -40°C to +105°C temperature range. Verify that the open-drain output interface matches the input requirements of the downstream logic or microcontroller. Consider the SSOP-5 package dimensions for PCB layout constraints.

Part Context

This part belongs to the BD45 series of voltage detectors from ROHM Semiconductor. The series offers various threshold voltages and delay times to suit different supervisory needs. The BD45351G-TR specifically targets applications requiring precise monitoring of 3.5 V rails with manual intervention capabilities.

Replacement Considerations

The BD5235G-1 is listed as a recommended replacement with the same SSOP-5 package. Note that the replacement features adjustable delay timing rather than fixed delay, which may require circuit adjustments.