BD45405G-TR

Overview

The BD45405G-TR is a supervisory circuit voltage detector manufactured by ROHM Semiconductor. It features a fixed detection threshold voltage of 4.0V with a precision of ±1%. The device provides an open-drain output that activates at a low level, accompanied by a fixed reset delay timer of 50ms. It supports manual reset functionality and operates within a supply voltage range up to 10V. The component is housed in a 5-pin SSOP package and is rated for an operating temperature range from -40°C to +105°C.

Feature Summary

• Fixed 4.0V under-voltage detection threshold with high accuracy
• Open-drain output configuration for flexible interfacing
• Manual reset capability for system control
• Low static current consumption for power efficiency

Applications

• Microprocessor reset circuits
• Portable equipment power management
• Battery-operated device supervision
• General-purpose voltage monitoring

Procurement Notes

Verify the specific suffix G-TR against the official datasheet to confirm the reel packaging format and pinout compatibility. Confirm RoHS compliance status and lead-free characteristics as per the latest manufacturer documentation. Ensure the 5-SSOP package dimensions match the target PCB footprint requirements before finalizing procurement decisions.

Selection Notes

Select this component when a fixed 4.0V threshold is required for system supervision. The open-drain output allows for wired-OR connections or direct interface with various logic families. Consider the 50ms delay time for application timing constraints. Verify that the manual reset feature aligns with the system's recovery strategy requirements.

Part Context

This part belongs to the BD45 series of voltage detectors from ROHM Semiconductor. The series offers various fixed threshold voltages to suit different supply rail requirements. The BD45405G-TR specifically targets applications needing a 4.0V detection point with minimal external components.

Replacement Considerations

The BD5240G-1 is listed as a similar level replacement with the same package type. Verify electrical parameter compatibility, particularly the detection voltage and output characteristics, before substituting.