BD45401G-TR

Overview

The BD45401G-TR is a voltage detector from the BD45 series by ROHM Semiconductor, housed in an SSOP-5 package. It features a fixed under-voltage detection threshold of 4.0 V with ±1% precision. 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 maintains a typical static current of 0.80 μA at Vdet=4.8V. The reset delay timer is fixed at 100 ms, and it functions across a temperature range of -40°C to +105°C.

Feature Summary

• Fixed 4.0 V detection threshold with high accuracy
• Manual reset capability for controlled system recovery
• Low power consumption suitable for battery applications
• Open-drain output interface for flexible logic integration

Applications

• Portable electronic devices requiring low standby current
• Battery-powered systems needing reliable under-voltage monitoring
• Industrial equipment operating in wide temperature environments
• Consumer electronics utilizing single-supply architectures

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for end-of-life notices, as availability may be limited. Ensure packaging specifications match design requirements for surface-mount assembly processes.

Selection Notes

Select this component when a fixed 4.0 V threshold is required without adjustable options. Consider the manual reset feature if external control over the reset state is necessary. Evaluate the SSOP-5 footprint against available PCB space and thermal management needs for the target application environment.

Part Context

Part of the BD45xxx family of supervisory circuits designed for general-purpose voltage monitoring. The BD45401G-TR variant specifically targets applications requiring precise under-voltage detection with minimal quiescent current draw, distinguishing it from adjustable or watchdog-enabled counterparts in the same series.

Replacement Considerations

BD5240G-1 is listed as a similar level replacement with the same package type. Verify electrical parameter compatibility, particularly threshold voltage and reset delay characteristics, before substitution.