BD45445G-TR

Overview

The BD45445G-TR is a voltage detector IC from the ROHM BD45 series, designed for monitoring single-input power supplies. It features a fixed threshold detection voltage of 4.4 V with a precision of ±1%. The device provides an open-drain output and includes a manual reset function. It operates within a supply voltage range of 0.95 V to 10 V and has a fixed reset delay time of 50 ms. The component supports surface-mount installation in an SSOP-5 package and functions across a temperature range of -40°C to +105°C.

Feature Summary

• Fixed delay timer ensures consistent reset timing without external components
• Manual reset capability allows active system control via dedicated pin
• Open-drain output interface simplifies logic level interfacing

Applications

• Processor supervisor circuits requiring stable voltage monitoring
• Embedded systems needing manual reset functionality
• Industrial control units operating in extended temperature environments

Procurement Notes

Verify current availability status as this part may be discontinued or subject to last-time buy conditions. Confirm package compatibility and electrical specifications against design requirements before procurement. Check for recommended replacement parts if production continuity is required.

Selection Notes

Select this component when a fixed 4.4 V threshold and manual reset are required. Ensure the application does not need watchdog timer functionality. Verify that the open-drain output suits the downstream logic levels. Consider thermal performance within the specified operating temperature range.

Part Context

This component belongs to the BD45 series of voltage detectors manufactured by ROHM Semiconductor. These devices are engineered for high accuracy and low power consumption in supervisory applications. The series offers various threshold voltages to accommodate different power rail monitoring needs.

Replacement Considerations

BD5244G-1TR is listed as a recommended replacement with similar specifications and package type.